Sometimes motorists are faced with the fact that the wipers turn on by themselves (on the VAZ 2114 and other cars of the family). This problem especially often occurs in damp weather or after washing.
The reason for this lies in the fact that the common fuse block on VAZ cars is not installed very well, and its tightness leaves much to be desired.
When water hits the common unit, including the wiper relay, it closes their contacts, resulting in the switching on.
Windshield wipers VAZ 2114
VAZ 2114 wipers do not work or do not turn off: what to do?
Sometimes motorists are faced with the fact that the wipers turn on by themselves (on the VAZ 2114 and other cars of the family).
This problem especially often occurs in damp weather or after washing. The reason for this lies in the fact that the common fuse block on VAZ cars is not installed very well, and its tightness leaves much to be desired.
When water hits the common unit, including the wiper relay, it closes their contacts, resulting in the switching on.
Moisture in the mounting block
Most often, the problem with random operation of wipers on domestic cars occurs in wet weather. The problem occurs most often in the fall. The first thing in the car that “suffers” from wet weather is the mounting block with fuses and relays. Regardless of the type of mounting block, the quality of the plastic in each of the options is low, which is manifested in the entry of dirt, water and dust into the block.
The photo clearly shows traces of oxides in place of the relay. This condition of the mounting block is caused by the presence of moisture in the housing. It is difficult to clean the oxidized surface without removing the housing, but it is possible.
Failure to turn on the wipers normally due to a dirty unit can be easily resolved:
- Remove the protective cover;
- To access the oxides, remove all fuses and relays;
- Armed with a toothbrush, rags and alcohol, clean all oxides and contacts. Replace faulty fuses with working ones.
Oxidation of contacts and fuses is often the reason why the wipers on a VAZ 2114 turn on themselves. Moisture in the mounting block leads to more serious consequences over time, so if you have frequent electrical problems, you should think about additional insulation of the fuse compartment.
Solutions to the problem
You can fix this problem by following these simple steps:
Such an operation will allow the wipers to return to normal operating condition in a short period of time.
The second solution to the problem is to simply remove the relay and turn on the wipers directly. In this case, the wipers can be used, but they will only work in the upper position of the switch. After the fuse box has dried on its own (usually a couple of days is enough for this), the relay can be mounted in place.
In rare cases, the cause of spontaneous activation may be a broken relay in which periodic contact closure occurs. It’s easy to check - just replace it with a new, similar one (which is very important). If the problem disappears, then it was the fault.
You can also check the relay using a multimeter by ringing its output legs according to the connection diagram (this must be done with the wipers in the “off” position on the steering column switch). If the multimeter shows that the circuit is closed, then it is time to replace the relay.
Causes of malfunction and their elimination
It often happens that the wipers do not respond to switching modes. If you turn on the wipers and when you switch the lever you do not hear the sounds of the electric motor or the clicks of the relay, the reason may be hidden in three places:
- switch;
- relay;
- fuse.
In such a situation, you first need to check the functionality of the fuse. It is located on the circuit board designated F5. You can check its working condition using a conventional tester. You also need to check the bimetallic fuse located in the purifier gearbox. If the wipers on a VAZ-2114 stop working in winter, there is most likely one reason - severe frost. The same fuse prevents the windshield wiper from turning on in case of overheating or freezing of the blades to the windshield.
Next, you need to check the relay (“short circuit” on the circuit board). You need to find it and temporarily replace it with a new breaker, and then check the operation of the wipers. If the windshield wiper does not function, we continue to look for the problem area. It is quite difficult to independently verify the operation of the switch. It consists of a complex structure, so it is easier to change it than to try to repair it. If the turn signal refuses to work together with the windshield wiper, the problem area is the switch located under the steering wheel.
To troubleshoot problems with the wipers on your VAZ 2109, it is not at all necessary to contact a service station. The work can be done with your own hands, saving a decent amount of money.
Repair consists of performing several operations:
- Disassembling the unit;
- Troubleshooting;
- Eliminating the causes of purifier failures;
- Reassembly.
Dismantling
The first step is to learn how to remove windshield wipers. This will give you access to the device and all its components.
It is enough to follow the specified sequence of actions and first familiarize yourself with the wiper diagram in order to do everything correctly.
Scheme
- First, disconnect the negative terminal of the battery to de-energize the car.
- Remove the brush arms by moving them to a vertical position and unscrewing the fastening nuts. Unscrew the nuts carefully so as not to push the lever out. Otherwise, under the action of the spring, it will fly into the glass and break it.
- By unscrewing the fasteners, the levers can be removed. It is not always possible to do this manually, so arm yourself with pliers. Be careful not to damage the threaded area. To avoid this, screw the nut back onto the splines, but not completely.
- Remove the protective caps made of plastic from the slots on each side.
- Unscrew the upper mounting nuts with the bracket and remove them. Under them there are rubber washers, which are also dismantled.
- Lift the hood and disconnect the wiring harness that powers the wiper motor.
- Unscrew the heater fan mounting screws and move it slightly to the side. This way, when dismantling the purifier, it will not interfere with you.
- Remove the cover from the relay and fuse box. You need to remove not only the wiper relay, but also everything else. Otherwise, they will interfere with your further processes.
- Unscrew the lower fastening nut of the mechanism, remove the plastic holder of the wiring harness from the electric motor from the hole in the car body. Now you can remove the holder so that it does not get lost during the repair.
- All that remains is to push the mechanism roller inside, then lift the electric motor and the windshield wiper mechanism slightly up and to the side. This way you can easily remove the node.
Other wiper malfunctions
In addition to spontaneous activation, sometimes there are other malfunctions, for example, the wipers work on their own on a VAZ 2114 (that is, they do not respond to changes in the position of the switch).
There may be several reasons for this:
Checking and fixing the problem in the first case is quite simple (how exactly is described above). If replacing the relay does not help, you should check the switch. You can do this in exactly the same way - by replacing it with a new one. In the vast majority of cases, this operation should help, and the wipers should function properly again.
If the wipers of the VAZ 2114 constantly work even after replacing the relay and switch, then the problem is in the main board. To fix the breakdown, the board should be removed from the mounting block and inspected thoroughly. If any oxidized areas are found, they should be cleaned (using a cloth and kerosene), and if unsoldered elements are found, they should be carefully soldered.
All manipulations with the main board should be carried out very carefully so as not to damage the electronic components or their tracks.
In addition to the malfunctions listed above, it also happens that the wipers of the VAZ 2114 do not turn off, but they react to changes in the position of the steering column switch.
The reason for this “behavior” lies in the breakdown of the switch itself, namely:
In the first two cases, you can try to eliminate the problem by carefully disassembling and cleaning the switch. At the same time, accumulated dirt should be removed and all areas with oxides should be cleaned (this can be done using kerosene or very fine sandpaper).
In the latter case, the switch will have to be replaced with a new one, exactly the same model, since it is almost impossible to independently restore it to working condition.
Source
Washer problems
For optimal and efficient operation of windshield wipers, they require a constant supply of water. To automate this process, engineers have developed a device called a washer.
Washer system diagram
Breakdowns and ways to fix them are different. Let's get to know them in more detail.
- The steering column switch does not work. Make sure of this by closing two contacts under the steering wheel - front contact 53ah-w, rear - 53ah-wh, and then measure the resistance. If it is low, the switch is replaced with a new one.
- There is no water flowing through the washer pump. It should also be replaced.
- Dirt has formed in the injectors. Use a sharp needle to clean them.
- The wire that connects the pump and the switch has broken. You understand that the only option is replacement.
- Relay K3 is faulty. Again, you have no choice but to change the relay.
- The hose ruptured and its integrity was compromised. What do you think should be done in such a situation? Absolutely right - change the hose.
Wipers do not turn off on VAZ 2114
When you turn on the ignition, the front wipers start working. Glass, in the first mode, all modes also work, but when you turn them off, they still work in the first, slow mode. What should I do? Maybe it’s the wiper switch itself?
Don't know why the wipers turn on when you turn on the ignition, and you can't stop it? You can, of course, turn off the fuse and drive without wipers for a while, but the problem must be solved completely.
The classic way to solve the problem usually comes down to two options: disassemble the steering column switch and clean the inside, or install a toggle switch responsible for separately turning on the wipers. But in fact, there are much more effective solutions to this problem.
Shorted or damaged wiring
If, when you turn on the ignition, the motor does not operate immediately or intermittently, the cause of the problem may be hidden in a short circuit or partial damage to the wiring. A visual inspection of the wiring to the steering column switch and motor is the only thing that can be done without a tool. Next, you need to search for the location of the short circuit with a multimeter.
A diagram with elements of wiper devices on 2114 will allow you to more clearly understand where problems with the wiring occur.
Due to voltage surges in the on-board network or poor quality of the complete parts from the circuit (fuses, relays, steering column), short circuits in the wiring are common. The weak points are at the contact points. Also, braids with wires can be damaged mechanically - by rubbing against plastic.
An experienced car enthusiast can eliminate the listed reasons for random operation of the wipers, while it is easier for a novice driver to seek help from an auto electrician.
Reasons for the wipers to operate when the SZ is turned on
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Whatever solution is chosen, you first need to find the reason for this “behavior” of the wipers. There are several of them. Let's look at the most common ones.
Closure
The first thing any motorist with any level of enlightenment will doubt is the wiring. There must be a short somewhere, he will think. Why does such a malfunction actually occur?
Short-term or long-term operation of the wipers when the ignition is turned on occurs in most cases due to a poor ground connection. To solve the problem, it is recommended to disconnect all points where the wiring comes into contact with ground and clean the terminals from oxidation and deposits. The terminals must then be tightened securely to avoid a recurrence of the situation in the future.
Mode switch
If the windshield wipers do not turn off during zero and intermittent operating modes, but function normally in accelerated mode, then this type of malfunction usually points to the switch. What can be done? Find the relay responsible for the wipers. For example, on some Toyota modifications the relay is installed directly inside the wiper switch. The device is collapsible, you can open it and see what the problem is. As a last resort, replace the relay.
You can completely disable the mode switch and remove it from the circuit. This will help disable the wipers, but after that they will only work in accelerated mode.
Wiper relay
One of the common reasons for the wipers to work. As mentioned above, it is replacing the relay that helps solve the problem in most cases.
Note. A common symptom of a relay related problem. When you turn on the windshield washer for a short time, the wipers make not two strokes, as they should be, but three - the last stroke is superfluous, since the water has already been removed from the glass and the cleaning is carried out dry.
The new relay must match the markings. For example, for the domestic “nine” this option is 526.3747. However, depending on the manufacturer, relay devices may have other markings, but they are quite suitable for replacement. You just need to ask the sellers for a specific car model.
If for some reason the relay does not fit, you can replace the resistor R4 inside the relay. The native one has a nominal value of 130 kOhm, and for stable operation of the wipers it is recommended to set it within 40-70 kOhm. You can buy the part at a radio parts store or ask radio amateurs on the forums in your hometown.
The relay itself is located in a block that car enthusiasts call a “black box”.
And this is a diagram of the “nine” wiper relay
As for the internal design of the wiper relay, it can be different. However, the resistor we need is always connected inside the relay to the fourth leg of the microchip.
Note. The problem with the resistor is solved in a similar way for almost all VAZ models: “tens”, “tags”, Lada Grant and Priora, etc.
You should be aware that in some cases the wiper relay may not be removable. Then the resistor cannot be removed and replaced. You'll have to find a new relay with a classic VAZ design.
Another option is that water got inside the “black box”. Obviously, you need to disassemble the block, but you need to do this at your own peril and risk, since in half the cases everything falls apart during disassembly and you have to replace the mounting block with a new one (costs 3-4 thousand rubles).
The “black box” is disassembled like this:
VAZ 2114: wipers do not work - TOP 6 reasons and solutions to the problem
Driving in bad weather with the windshield wipers not working is a big problem. Reduced visibility and visibility due to a dirty windshield seriously affects driving safety. It is clear that this is not a critical breakdown of the car, but it is still not worth delaying the repair of the wipers. There are several reasons why wipers on a VAZ 2114 do not work. All of them, if desired, can be eliminated using improvised methods. As a last resort, there is always access to new inexpensive spare parts in auto stores, including for the windshield cleaning mechanism.
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
