How to speed up the work of Priora wipers
The problem of slow windshield wipers appears over time. The speed may decrease several times; the windshield wipers begin to move slowly even on wet glass covered in rain. There are three reasons for the malfunction:
- engine malfunction;
- poor performance of wiper hinges;
- problems with the engine power supply.
Motor malfunction may be due to worn brushes or bearings. But the wiper motor is quite reliable, so more often the reason is in the hinges or power supply.
The operation of the hinges can be adjusted using high-quality lubricant. To do this, you need to remove the trapezoid with the motor, wash the hinge joints and apply a lubricant that does not thicken at low temperatures.
Power supply problems are solved by updating the Priora windshield wiper circuit. The wiper switch circuit contains many electrical connections and contacts that oxidize over time. As a result, there is a drop in the voltage supplied to the wiper motor, and it does not develop the required power.
Modification of Priora wipers by installing a five-pin electromagnetic relay, which minimizes current losses in the power circuit.
For this you will need:
- 5-pin relay - 3 pcs.;
- 5-pin relay motor connector;
- round terminals - 5 pcs.;
- wire with a cross section of 2.5 mm.
The connection diagram involves installing three relays in the wire gap in front of the windshield wiper motor and does not make changes to the standard car wiring (Figure 1). As a result, the voltage supplied to the engine through the contacts and switches of the wipers only controls the activation of the relays, which supply the on-board network voltage to the engine without loss.
Particular attention should be paid to the insulation of the contact wires. The relay unit must be installed in a suitable plastic case and the holes sealed to prevent moisture from entering, which can cause oxidation of the contacts and damage to the relay.
This solves the problem of slow operation of the wiper motor.
When using the Priora windshield washer, the wipers make four passes instead of two, as on most cars. The first two cycles the wipers scrape dirt and water from the glass, and the last couple of cycles the wipers move over dry glass. As a result, accelerated wear of the rubber bands occurs, and scratches appear on the glass. This “bug” can be corrected by modifying the Priora windshield wiper. It consists of modifying the windshield wiper relay, after which the number of strokes will decrease.
The work requires minimal skills in handling a soldering iron in order to be able to replace one resistor in the relay.
To upgrade the wiper relay you will need:
- resistor 40-70 kOhm;
- screwdriver or knife;
- soldering iron;
- solder;
- rosin.
The number of movements of the wipers when the washer is turned on depends on one of the resistors in the relay circuit. Its resistance is 141 kOhm, and for two cycles a resistor of approximately 51 kOhm is required.
To upgrade the relay, you must perform the following steps:
- remove the wiper relay from the fuse panel;
- use a knife or screwdriver to open and disassemble the relay;
- heat the soldering iron;
- remove resistor 140 km;
- solder a 40-70 kOhm resistor onto the vacant space (with higher resistance, the wipers can make 3-4 strokes instead of 2);
Note: If a resistor of a suitable value is not available, you can replace it by connecting resistors of a suitable value in series or in parallel. For example, solder two 20 kOhm resistors connected in series (you get 40 kOhm) or two parallel connected 100 kOhm resistors (you get 50 kOhm).
- assemble the relay housing;
- install the relay on the fuse panel;
- Check the functionality of the relay by briefly turning on the glass washer.
The modification of the Priora windshield wiper has been completed. The wipers will perform two strokes.
You can also install an additional pause regulator between wiper movements based on a variable resistor. For this you will need:
- wires;
- male and female connectors;
- variable resistor.
To install the regulator, you must perform the following steps:
- solder two wires to the resistor;
- install male and female connectors at the ends of the wires;
- disassemble the steering column casing;
- find the yellow wire with a green stripe;
- pull out the wire connector from the block;
- connect one wire coming from the variable resistor to the block, the other to the tip of the yellow-green wire disconnected from it;
- attach the variable resistor in an accessible place (for example, on the steering column);
- assemble the column casing.
Such modification of the Priora wipers is not feasible on luxury cars equipped with rain sensors.
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Intermittent wiper mode does not work, reasons
Using the example of the windshield wiper (windshield wipers) of VAZ 2108, 2109, 21099 cars, we will find out the causes of the malfunction - the intermittent wiper mode does not work.
Symptoms of a problem
When you move the right lever of the steering column switch to the lower fixed position (including intermittent mode), the wiper blades do not react in any way and do not move anywhere, or they move, but without interruption. In the second and third positions (first and second speed of the purifier) they work normally.
Causes of the malfunction: “The intermittent wiper mode does not work”
To determine why the intermittent wiper mode does not work, you need to measure the voltage at the control points using the circuit diagram for switching it on in order to understand where the electrical circuit breaks.
How to stop constantly running wipers?!
Good day to all! People help! When the ignition is turned on, the front wipers constantly work. The wiper intensity switch works, but cannot be turned off. I pulled out the fuse, I'm driving without wipers and without windshield washer for now because everything is connected to one fuse. Hellp, who has encountered such a glitch! It’s already spring outside, everything is running and melting, there’s enough clean glass for 100m, without wipers and washers it’s a complete mess. As I understand it, there is a short somewhere, most likely water got in somewhere. I can’t catch up, maybe someone had something similar. Tell.
Take the steering column switch apart and clean it, it should help
Put the toggle switch on and it’s like on an airplane: click and the brushes work
