as reliable, but without unnecessary bells and whistles. I wouldn't say it's very reliable, it's disappointing. Literally a week later the key fob broke; at the station where I installed it, they waited a long time, but they finally replaced it. But recently I discovered that the engine is not blocked. That is, you can turn off the siren and drive in peace. I will now demand that this alarm be dismantled, since it does not protect anything.
APS 3800 – the best choice of one-way alarms
Compared to other models in the third generation one-way alarm line, APS 3800 looks the most attractive. Its cost is practically no different from 3700 and 3900, but the functional content has several interesting features.
Firstly, all relays are supplied as a set, and the driver does not have to purchase and install them separately. Secondly, the APS 3800 has the ability to install two additional motor locks, which is not available in the 3700 model, as well as an output for 2nd and 3rd channels (for opening the trunk or connecting additional functions).
In addition, this alarm system has a turbo timer, which allows drivers of cars with a turbocharged engine to arm the car without waiting for the turbine to cool down and turn off.
All these functions, as well as the stability of operation and high quality components characteristic of the entire line, make the APS 3800 an attractive option for vehicle protection. It is perfect for motorists whose car needs simple but reliable protection.
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SECURITY FUNCTIONS
Key fobs included: 5-button with LCD display + 3-button
Radio channel, MHz: 434
Operating range in control mode, m: up to 450
Range in alert mode, m: up to 900
Dynamic code with protection against scanning and interception: Dinamic Code
Starter blocking with a normally open relay
Improved Remote Panic Mode
Bypassing a faulty zone when arming with zone/trigger indication
Memory for 1 or 2 last system triggers indicating zone/trigger
FAPC™ anti-false alarm function: NPC™
Passive engine blocking mode (immobilizer)
Disabling security in 2 stages
Silent arming and disarming of the system
Arming without using a transmitter
Programmable 1, 2 or 3 digit personal system override code
Review of 20 popular APS car alarm models and instructions for their installation and operation
APS alarms are conventionally divided into two types: early versions with a limited set of options and later ones with expanded functionality. Regardless of the year of manufacture of the anti-theft system, it can be installed on any make of car, both domestic and imported. Configuration and programming of all models of APS security systems is carried out according to one algorithm and allows you to link up to four communicators to the control unit.
Video: overview of the APS 3800 system equipment
Advantages and disadvantages
Model range and their functionality
Business class models with advanced features
Photo gallery: the most popular models of APS systems
How to install an alarm (step-by-step algorithm with connection diagrams)
Photo gallery: APS alarm connection diagrams
Table: designation of contacts for connecting the main 20-pin output
Installation with work algorithm
How to set up and use the alarm?
Designation of symbols and buttons on the key fob
Table: description of remote control button commands
How to program the key fob?
Table: decoding of signals supplied by an LED light bulb
How to configure and disable autorun?
How to turn off the alarm?
Video: APS system emergency shutdown
Aps alarm problems and their elimination
Download operating and installation instructions, with Aps alarm connection diagrams in PDF format
Video: opening the trunk door on the APS alarm
Characteristic
Overview of the main characteristics of “APS” alarms for cars:
- to power the car's security system, a 12-volt voltage source is required;
- the rating of safety devices for protecting electrical circuits is 5–15 amperes;
- current consumption level when the protection system is turned on - no more than 20 mA;
- The signaling device is activated after pressing the buttons on the transmitter after 3/45 s;
- the maximum number of alarm mode cycles is 6 pcs. 30 seconds each;
- number of protection zones for car security - 4;
- packet data transmission between the microprocessor and the key fob is carried out at a frequency of 434 MHz;
- operating temperature range for the control unit is from –40 to +85 degrees, for the siren – from –30 to +85°C;
- The degree of protection of the siren according to GOST corresponds to class IP54, for all other elements - IP40.
Optimal operation of the APS microprocessor alarm module is possible at a voltage in the range from 9 to 16 volts. If a load surge occurs in the on-board network that goes beyond these limits, this can lead to damage to the control unit.
Equipment
Description of parts and elements included in the delivery set of APS anti-theft systems:
- Main module equipped with a microprocessor. The device includes a board equipped with built-in sensors and relays for blocking electrical circuits of the starter mechanism and controlling door locks.
- Touch controller with the ability to adjust the sensitivity parameter. The device detects physical impacts on the body in two zones - warning and alarm.
- Push-button switch for activating the technical mode of car alarm maintenance.
- The main communicator equipped with four keys. The main key fob has a two-way communication function, which is carried out through the display.
- Spare remote control. The device is not equipped with a screen, so it does not have a warning system.
- LED element for determining the state of the security complex.
- Multi-tone siren.
- Harness with cables for connecting all alarm components.
- Diode elements.
- One limit switch (trigger) for installation on the hood or trunk. The first option is more preferable, since the main components of the vehicle (V) are located in the engine compartment.
- Car windshield stickers.
- Warranty card.
- Service manual for installation and operation. The documentation contains all the nuances that allow you to correctly connect and configure the alarm.
- Packing box.
Since door triggers are not included, these items must be purchased additionally prior to installation.
Video: overview of the APS 3800 system equipment
The “Unpacking Auto Products” channel in its video presented the delivery kit for a car alarm using the example of the 3800 model.
Advantages and disadvantages
Advantages characteristic of APS car alarms:
- The “signals” of this manufacturer are practically not subject to hacking due to the effective encoding technology of transmitted signals. The pulse format changes every time you press the key fob button, so it is almost impossible to repeat and record a data packet.
- Possibility of using old and new APS security systems on vehicles with carburetor and injection power units.
- Huge functionality comparable to that of full-fledged security systems
- Most popular models are characterized by affordable prices.
- The ability to control window regulators, provided that these devices are equipped with an electric drive.
- A wide range of models with different options and capabilities.
- Easy to connect and install.
Owners of cars with APS alarms highlight the following disadvantages in their reviews:
- low quality of component products, for example, a key fob (due to a weak case, the device can quickly fail);
- spontaneous operation, in particular at low negative temperatures;
- in some service manuals, the colors of the insulating layer of the wires do not match those included in the package, which complicates the connection process;
- low alarm operating range, which in fact can be no more than 50 meters;
- the weak insulating layer of the cables and their thinness lead to the fact that during operation the conductors can crumble, which will lead to short circuits;
- the difficulty of finding spare parts for alarm repairs, in particular for earlier models.
We increase secrecy in the APS-9000 signaling system
The APS model 9000 car alarm can be standard installed on any car. Owners usually have no questions about how to disarm the car or how to turn it on - one button is responsible for both actions. Another thing is that you can quickly disable the security by pressing a button located inside the cabin. This is what the instructions say, but here it is proposed to improve privacy by setting a personal code. It will also be discussed how to control Valet mode, including without using key fobs. Enjoy reading.
Model range and their functionality
Alarm systems models are divided into:
Budget models
These versions of systems include models:
- APS 1000;
- APS 1100;
- APS 1300;
- APS 1350;
- APS 1500;
- APS 1550;
- APS 2000;
- APS 2300;
- APS 2350;
- APS 2500;
- APS 2550;
- APS 2900;
- APS 5200.
These models of anti-theft systems have the following capabilities:
- One way communication. If there is an attempt to steal, only the siren will turn on; no notifications will be sent to the communicator or mobile device.
- Ability to control the central locking of the car. The communicator is used to open and close doors.
- Availability of service mode.
- Using Panic mode. Its use leads to the activation of the siren and external lighting devices upon command from the communicator. This is required to search for a vehicle in a parking lot, attract attention to the car, or scare off potential intruders.
- Possibility of silent activation of security mode. When protection is activated, the siren does not produce sound signals.
- The presence of an LED to determine the alarm status.
Business class models with advanced features
List of the most popular business class models in Russia and the CIS countries:
- APS 2100;
- APS 2700;
- APS 2800;
- APS 3900;
- APS 5000;
- APS 7100 Two Way;
- APS 9000.
Features that more modern models have:
- Feedback and warning system. The user is warned about any events related to the operation of the protective installation by sending a message to the key fob or mobile device.
- Availability of “Anti-robbery” mode. In the event of a forceful seizure of the vehicle or a robbery, the engine is automatically blocked 30 seconds after the command is sent. The motor can be locked while driving.
- Automatic start of the power unit. The engine can be started by an alarm clock at a specified time, by a timer, at certain intervals, and by air temperature. You can also start the engine automatically by command from the key fob.
- Using a special code with a secret for data transfer. This allows you to prevent electronic hacking of the alarm with a code grabber or scanner.
- Availability of a personal password for emergency alarm control. The code may be required if the remote control is lost. The user must program the password in advance.
- Possibility to separately disable warning and alarm zones of the sensitivity controller.
- Determination of a faulty alarm zone with its designation on the remote control screen.
- Remote measurement of the temperature level in the vehicle interior.
- Availability of automatic and manual modes for diagnosing communication quality.
- Ability to control additional equipment provided it is connected to the microprocessor unit. This includes power windows, sunroof, outside side mirrors, heating and air conditioning system, etc.
- Possibility of activating the protection mode on a car with the power unit running.
- Availability of non-volatile memory of the control unit. If a power failure occurs, the alarm blocks the engine, and after applying voltage it returns to its original state.
Photo gallery: the most popular models of APS systems
Instructions
You can learn how to use the APS 9000 car alarm from the instructions that come with each kit. From this manual you will learn:
- How to use standard security functions
- How to manage autorun
- How to program additional security features
In addition, the instructions contain a step-by-step guide for installing auto protection and its connection diagram. By strictly following the manufacturer’s instructions, operating the alarm is easy and comfortable, and even a non-professional can connect it independently.
The APS company (APS, APS) has developed special remote controls (key fobs) to facilitate interaction with the car and alarm system. With them, it is easy to perform various actions (depending on the programs) with one click of the designated button. You won’t have to wonder whether the car is securely guarded or whether it’s ready to start when the confirmation “squeak, click” sounds. When purchasing a vehicle and installing an APS protection system, an APS pager is issued along with the documents, but further actions may vary.
In some cases there is a loss, in others there is a breakdown, a failure to such a level that it cannot be restored, and other factors do not contribute to establishing a relationship with the device. We are ready to provide an alternative option to replace a failed remote control - purchase similar products or as close as possible. Our professionals will select the right device based on the client’s wishes (set of programs, internal and external characteristics, etc.), but in the case of individual requests, they will clarify all the nuances and act based on them. At your service is a wide range of different models, where the number of buttons, their shape (as well as the pager itself), color, presence or absence of an information display depend on your wishes.
We strive to provide the most convenient models so that their operation is easy and enjoyable, which is why all of them are modified and undergo mandatory testing. Fingers glide comfortably over the buttons, high accuracy of operation (quick response to a command), flawless use over a long period of time - this is what control key fobs for APS car alarms represented by our company are. We guarantee excellent work and high quality.
Only with us you will find the model you need, without wasting your nerves and energy searching, and you will receive all the necessary explanations and documentation. The dimensions of the remote controls, despite the numerous functions, do not exceed acceptable standards, so being in your hand or pocket will not cause inconvenience, and thanks to the color palette, LED or LCD indication, you will always easily find the device and receive accurate information. We also do programming, so that from the moment the key fob pager comes into your hands, it begins its immediate duties.
How to install an alarm (step-by-step algorithm with connection diagrams)
Installation of the anti-theft system is carried out after disconnecting all electrical equipment and the battery. To deactivate the battery, you must disconnect the negative signal terminal from the device using a wrench.
Photo gallery: APS alarm connection diagrams
Table: designation of contacts for connecting the main 20-pin output
| Grey | Connects to the engine compartment lid negative limit switch |
| Brown | Connects to negative output of door lock triggers |
| Yellow-gray | To the output of the handbrake lever or pedal |
| Black-gray | Connects to the tachometer or vehicle ground. In the latter case, any bolt screwed into the car body is used for connection. |
| Black-pink | Output for connecting a fourth additional channel |
| Black and white | Positive siren output |
| Two white | Must be connected to the positive terminal of the electrical circuits of the turning lights or side lights |
| White-red | The contact goes to the positive terminal of the battery |
| Black | Connects to the negative output of the battery or machine ground |
| Red | Connects to the positive terminal of the battery |
| Green | Negative signal of the tailgate limit switch |
| Violet | Goes to the positive contact of the trigger installed in the door |
| Black | Negative battery output or car body |
| Pink | Output for connecting a third additional channel |
| White-green | Auxiliary contact for controlling interior lighting or power windows |
| Red-white | Security system status output |
| Blue-white | Programmable negative signal to disable the standard anti-theft system |
| Black-orange | Connects to the additional starter lock relay |
| Blue | Second additional channel output |
Installation with work algorithm
DIY installation guide for anti-theft system:
- At the first stage, the microprocessor module is installed; for its placement, you should choose the most hidden place and protected from external influences. It is recommended to install the unit behind the instrument cluster if there is available space there. The device is secured using plastic ties or self-tapping screws included in the delivery kit. The module should not be placed close to electronic devices and equipment - such devices emit interference and will cause unstable operation of the system. To further protect the unit from the effects of vibration and moisture, it can be wrapped in cellophane and foam rubber.
- The siren is located under the hood of the car; it can be installed on the shield separating the engine compartment from the passenger compartment, or on the fender liner. This element should be positioned with the horn facing down or to the side to prevent moisture from accumulating inside. Neither the device nor its wires should be accessible when the hood is locked. In addition, installation of the siren is not allowed near moving mechanisms and the cylinder block, as well as metal surfaces adjacent to it. If a stand-alone device is used, the user must ensure clear access to its keyhole during installation.
- The siren harness is routed to the control unit through a special technological hole in the engine panel.
- The limit switch is mounted on the hood or tailgate. This element is installed on the metal surface of the housing, and the user must ensure maximum ground connection. For installation, a standard hole in the car body with a diameter of 6–7 mm is used. The device must not be placed in drains or places where moisture accumulates. The free play of the limit switch rod must be at least 6 mm.
- The wiring is routed from the limit switch to the microprocessor module. It is important that the cable is not laid under tension or bent, otherwise it will quickly wear out.
- A transceiver module with a built-in antenna is installed on the windshield. The surface must first be cleaned with a solvent or alcohol.
- An LED light is installed on the instrument cluster or in the plastic trim around the windshield. For installation, you will need to drill a small hole of the appropriate diameter. The diode light bulb can be located in any other place, but the user must see its operation from the street.
- A push-button switch is installed in the most hidden way inside the vehicle to activate the service mode. The cable from the device is laid to the microprocessor. To place the button, you can choose the free space under the instrument cluster or behind the safety module.
- The next step is to install the touch controller. The sensor is installed in the central part of the body, preferably on the partition separating the engine compartment from the passenger compartment. During installation, the user must provide free access to the device controls. Self-tapping screws or plastic ties are used for fixation.
- All elements are connected to the alarm control unit. For connection, special connectors on the module are used.
How to set up and use the alarm?
The instruction manual states that the user must turn on the communicator before using the APS system. To do this, just insert a battery into the device. The battery is installed in a compartment hidden behind the back cover, taking into account the polarity.
Control key fob
Using the full functionality of the communicator is possible only after linking the device to the control unit. The programming procedure may differ depending on the anti-theft system model.
Designation of symbols and buttons on the key fob
Button numbers on the main communicator:
Identification of keys on the key fob with APS 7000 screen
Description of the indicators located on the remote control display:
- Determining the time of day.
- Board with the current time. The screen can also display information about the engine temperature for autostart.
- The mode of sound notification of the user about alarm events is enabled.
- Vibration alert activated. Instead of sound alerts and warnings, the device will vibrate.
- Indication of battery charge in the key fob.
- Door locking when security mode is turned on. If the “lock” is open, then the door locks are unlocked.
- Vehicle condition. If the headlights blink, this indicates the activation of external lighting devices. If one of the doors or the hood flashes, it can be concluded that the body element is not locked.
Indication of icons on the communicator screen
Table: description of remote control button commands
| Button combination | Press type | Function description |
| 1 | Short term | Enabling the car protection function or locking the door locks when the ignition system is activated |
| 1, 1 | Brief within 5 s after arming | Deactivating the Sensitivity Controller Warning Level |
| 1, 1, 1 | Press twice after enabling protection | Disabling both shock sensor zones |
| 1 | Hold for 2 seconds | Silent activation of security mode |
| 1 | Hold for 2 s with the engine running | Enabling the protective function on a car with the engine running. All doors, trunk and hood must be locked. |
| 1, 3 | Simultaneous pressing | Activation of silent security mode |
| 2 | Short term | Disabling the protective function or opening the door locks when the ignition is on |
| 2 | Hold for 2 seconds | Silent disabling of the security mode |
| 3 | Hold for 2 s | Activation and control of the second additional channel |
| 3, 3 | Press twice within 5 s | Temporary cancellation of passive activation of protection mode |
| 3, 3 | Press twice within 5 s | Temporarily cancel the engine blocking mode. The buttons are pressed after the ignition system is turned off. |
| 1+2 | Hold for 2 s with ignition off | Activating Panic mode |
| 1+2 | Hold for 2 s with ignition on | Enabling the Anti-Robbery function |
| 1+2 | Simultaneous pressing for 1 s with the ignition off | Activating the “Search” option |
| 2+3 | Simultaneous short press | Enabling the feedback coverage diagnostic mode |
| 1+4 | Simultaneous hold for 2 sec. | Selecting the user notification mode using the remote control |
| 4 | Press and hold for 5 seconds | Activating or deactivating the Sleep function |
| 4 | Short term | Disabling alarm reminders |
| 5 | Short term | Activating the screen backlight |
| 5 | Double tap | Enabling the alarm time indication system, provided that the option is activated |
| 4+3 | Hold for 2 s until beep | Activating the hour bell option |
How to program the key fob?
The APS microprocessor alarm module, regardless of the model, is designed to link no more than four remote controls.
The programming procedure is as follows:
- The vehicle's security is disabled. The user must turn the ignition system on and off.
- The button to enter the service mode is pressed 5 times. The siren should beep five times and the LED indicator will blink slowly.
- Any key can be pressed on the remote control being linked. To confirm, the siren will emit one beep and the LED will turn on for 1 second.
- Other devices are linked in the same way. When programming each communicator, the siren should sound and the LED should turn on.
- After binding the fourth key fob, the control unit will automatically exit the setup menu.
Table: decoding of signals supplied by an LED light bulb
| Flashing type | Description of the mode |
| Uniform blinking when the ignition is off | Vehicle protection activated |
| Uniform flashing when the ignition is activated | “Anti-robbery” option enabled |
| Slow blinking light bulb | Additional powertrain lock activated |
| Fast LED flashing | The alarm operates in standby mode for passive activation of the protection mode or motor blocker |
| The light is off | Vehicle security is disabled |
| The diode lights up without blinking | The service mode for servicing the anti-theft system is enabled |
| Two blinks of the diode with a pause | Warning the car owner about the inclusion of the warning zone of the shock sensor |
| Three blinks of the lamp with a pause | Notification when the alarm zone of the sensitivity controller is turned on |
| Four flashes and a long pause | The alarm mode was activated as a result of activation of the luggage compartment or hood trigger |
| Five LED blinks and a pause | Warning about the inclusion of an additional shock sensor |
| A series of flashes after ignition activation | Indication of the number of configured options |
How to configure and disable autorun?
Setting up a system with autostart using the example of the APS 9000 alarm system:
- The vehicle is prepared by setting the program neutral function for a car with a manual transmission. If the car has an automatic transmission, then the selector must be moved to the “Parking” position.
- The third key is pressed on the communicator.
- The starter mechanism will begin cranking the crankshaft of the power unit to start. In total, the alarm will make four attempts to start the engine.
- If the engine starts successfully, an icon in the form of smoke from the muffler will appear on the key fob display.
To prepare the vehicle, several steps are performed:
- On a car with the engine running, the transmission selector is set to neutral.
- The handbrake lever is lifted.
- The key is set to the “Off” position and removed from the lock. The engine running icon should light up on the key fob display, and the engine operating time will also be displayed.
- The auto protection mode is activated. The power unit should stop at this moment. This indicates that the engine is ready to autostart.
If you need to enable autostart based on air temperature, you need to follow this algorithm:
- The ignition system in the car is turned off.
- The button to enter the service mode is pressed four times. If you need to enable autorun by timer, then click on the key five times.
- The ignition system is turned on. The siren should give several warning signals depending on how the autostart will be carried out.
- The next time you press the service key, the option is activated or deactivated.
- The ignition system is deactivated.
Programming
The alarm programming process is discussed using the APS 2100 model as an example:
- The car's ignition system turns on.
- Over the next ten seconds, the user must press the key to enter the service mode three times. The number of clicks is determined by the alarm version. The siren will sound a warning signal and the LED light will turn on.
- On the communicator, press buttons 1 and 2 simultaneously and hold for ten seconds. If the programming menu is entered, the siren will emit an extended signal and the LED light will blink slowly.
- Using the service key, you select an option; the number of presses must correspond to the function number in the table. The latter is attached to the service manual. Each time you press the siren will emit a short signal.
- To activate the selected option, use key 1 of the communicator; to disable it, use key 2. In the first case, the siren gives a single signal, in the second, a double signal.
- If you want to move on to the next function, the service mode button is pressed again.
- To exit the setup menu, the ignition system is turned off. You can also take no action for 10 seconds.
How to turn off the alarm?
Example of disabling alarm 1300 in emergency mode:
- The car door is opened with the key, this will activate the alarm.
- The ignition system is activated. Over the next 5 seconds, the service button is pressed once and moved to the on position.
- The alarm and security mode should turn off, the LED will stop blinking.
If the anti-theft system is equipped with feedback, then the procedure for deactivating the protection is as follows:
- The car door opens.
- The ignition system is activated. Within 15 seconds after this, the button to enter the service mode is pressed once. The security mode should turn off.
If deactivation using a code was previously configured, the deactivation procedure is performed as follows (using the example of APS 2700):
- The car door opens with a key. The alarm mode will turn on.
- The key is inserted into the lock, the ignition system is activated, turned off and turned on again.
- Using the service button, the first character of the password is entered. The number of presses must correspond to the code number.
- The ignition in the car is turned off and reactivated.
- The second digit of the password is entered in the same way. If the code is entered correctly, the siren will sound twice and the system will disarm the security system.
Video: APS system emergency shutdown
The Paha Eger channel in its video showed the process of disabling the APS car alarm using the example of the 2100 model.
Features of the APS 9000 system
The aps 9000 car alarm is equipped with two-way communication and notifies the driver of an unusual situation using a signal on the key fob. It has a remote engine start function, which saves time in winter frosts and creates comfort in the cabin.
In addition, the security system includes such standard functions as:
The programmable features of the APS 9000 provide the ability to:
Remote engine start works with both manual and automatic transmissions. It monitors the condition of the unit using a crankshaft phase sensor or an oil pressure device, and has a separate mode for turbocharged cars.
Aps alarm problems and their elimination
Read more about why the anti-theft system does not respond to the key fob and how to troubleshoot:
- Formation of corrosion on contact elements and jamming of triggers. These components are inexpensive, so it makes more sense to replace them than to repair them. To prevent this problem, APS alarm limit switches are recommended to be periodically lubricated and cleaned of rust.
- Malfunction of the alarm system as a result of breakdown of lighting devices or safety elements. First of all, you need to check the condition of the latter, and then diagnose the integrity of the electrical circuits. Contact closure may be due to wear of the insulating layer on the wires; in this case, the cables must be replaced.
- Poor contact of the control unit with the vehicle's on-board network, which is associated with oxidation of the connector. To fix the problem, you need to disconnect the block with wires from the module and clean it from corrosion. If necessary, lubricate the contact elements with a special substance.
- The battery in the remote control is low. With this problem, the transmission of signals to the control unit may fail, or the alarm may stop responding to button presses altogether. To eliminate the malfunction, the battery is replaced with a new one.
- Damage to the communicator as a result of prolonged exposure to moisture. The key fob buttons may respond every once in a while; sometimes you need to press the keys hard to execute a command. To eliminate the malfunction, the remote control should be disassembled and its working board should be dried on a battery or in another dry and warm place. The use of a household oven, hair dryer or open fire is not allowed, as this will completely damage the electrical circuit. If these steps do not help, the communicator will have to be changed.
- Lack of alarm response as a result of desynchronization of the remote control and microprocessor module. This problem occurs infrequently, but sometimes occurs as a result of interference. To eliminate it, you will need to emergency disable the security mode and leave the pulse action area. After this, the device is re-linked to the control unit.
- Spontaneous activation of the security mode. The problem may be due to either a malfunction of the triggers or the control unit, or incorrect settings of the shock sensor. The touch controller is equipped with special controls that allow you to change the sensitivity level. It is recommended to reduce this parameter if there are frequent false positives.
- A software malfunction of the control unit will lead to malfunctions of the alarm system. It is impossible to eliminate this cause on your own; this will require the help of specialists.
The most common errors and breakdowns of the security system
1. There is no alarm feedback from the key fob and pager. Possible causes of the malfunction:
Ways to solve the problem: in case of communication failure, it is recommended to reprogram the key fobs for the aps 9000 car alarm again. How this is done is described in detail in the instructions for the equipment. If this does not help, you need to check the antenna signal. This device is sometimes defective in APS systems. A faulty antenna can be replaced at a service center.
Ways to solve the problem: you need to check the shock sensor contacts. If necessary, clean them and reconnect. The faulty unit must be shown to specialists.
