On the car VAZ 2110 does not work rear window heating: the reasons

This function, like heating the rear window, is by no means a novelty in domestic VAZs. This option is available on all modern cars of Volga production, including "dozens" and "nine". Heated rear window is useful not only in winter, but also in the summer (in particular, when heavy rains come). Clear glass is the key to your safety. After all, the car review thanks to the salon mirror is increased by a third. Sometimes this system fails. VAZ-2110 is not an exception. Does the rear window defogger not work? What to do and what are the reasons? The answers to these questions will be found in our today's article.

Device

First, let's get acquainted with the device of this system. It includes the following elements:

• A thread that provides heating.
• Wiring (plus and minus).
• System switch. It is equipped with a warning light inside.
• Heater relay.
• Fuse.
• Control buttons.

This system works very simply. On the rear window there is a conductive thread. When the power is supplied, it warms up. Thus, the glass is heated and the condensate is removed from its inner side.

Why is the rear window defrocked on the VAZ-2110? The reasons can be banal. After all, there are no mechanical parts in the device. Therefore, all you need for diagnosis is a multimeter and a test lamp. This is the only way to know why the VAZ-2110 rear window does not work. Photo of the scheme is in our article. Below we will consider the main elements that need to be checked.

Relay

The most common reason, because of which the rear window heater does not work on the VAZ-2110, is a relay. Over time, it burns up and stops normally passing current. How to check this item for serviceability? You need a multimeter. But first we check whether the relay issues signs of life. We turn on the heating button and listen to its operation. A good relay should make a characteristic click. If it does not exist, we continue to search for the problem deeper. Pull the relay out of the mounting space and apply the probe to one of the contacts. The second wire goes to the "mass" (that is, to the bare section of the body). If the device shows "zero", most likely, the element needs to be replaced. It is because of the relay that the rear window defogger is not working properly. VAZ-2110 is equipped with an element of the brand "K6". It can be bought at any car store for no more than two hundred rubles. If there is no multimeter, you can use the control lamp. It is important that it is 12 volts. One wire is connected to the "plus" relay. The second closes to "mass". If the lamp does not light, then the relay is defective. But there are also burning of contacts, because of what the voltage will not be given out in full. The light bulb can not detect it. For more accurate diagnosis, experts recommend using a multimeter.

Fuse

If you do not have rear window heating, VAZ-2110 should be checked for a burnt fuse. In the mounting block, check the elements in connector F8 (they usually go to 20 amps). If the fuse is the same as the photo below, it needs to be replaced. For the future, experienced car owners advise carrying a spare kit in the glove compartment. After all, if a fuse blows on the gasoline pump (especially in transit), then the car can not be started at all.

What is the reason for this phenomenon? Most often this happens because of a short circuit. At one point, the voltage of the on-board network increased above the norm. To prevent melting of contacts, the system simply turns off by breaking the connecting elements. In this case, this is + 12V power supply and the conductive elements on the rear window.

Damaged wires

This is just the case when the fuse did not save the situation and the closure did happen. Fused contacts are very difficult to find. After all, the wiring to the glass extends through the entire cabin. To determine where the chain was broken, use the multimeter. It must show whether the voltage is on the network or not. In this way, call all the sections. After the breakage can occur both before and after the fuse assembly .

Damage to the heating wire

What other reasons do not the rear window heating work? VAZ-2110 is equipped with special threads. A breakage can occur here. Threads are a small layer of conductive material. It is easily damaged by the slightest mechanical effect (even with such harmless actions as removing the toning). Determine the place of damage can be with a magnifying glass. It is desirable to perform diagnostics during the daytime. Damage to the threads is one of the clear reasons why the rear window glass does not work partially on the VAZ-2110.

How to repair the conductive layer? Method number 1

You can do it yourself. To do this, do not need to dismantle the glass. All you need is to purchase a special conductive paste (this is in auto shops or on the market) and apply it to the damaged area. It is important to carefully prepare it. To do this, gently clean the surface of the varnish and degrease the place with alcohol (use a piece of soft cloth). Next, we clean the ends of the damaged threads. On the upper and lower part of it, we put tape or tape in such a way that there is a small gap (not wider than the thread itself). In it, we apply a special adhesive. After a day, the composition will finally dry up. Then you can remove the scotch residues and check the system for operability. If the heating works only partially, then the breakage occurred in several places. Find the second place of thread damage and treat it with a conductive compound in a similar way. That's all. Also consider the grandfather's way to repair the threads.

Method No. 2

This method involves the use of chips of non-ferrous metals as a conductive element. Also, for the repair of the thread, we need a clear varnish (it is advisable to use a thick coat for nails). Mix the shavings with the brush and apply to the strip, pre-pasted with adhesive tape, as in the previous case. An hour later, the varnish will dry completely. The method is quite old. It is not always possible to connect damaged contacts as needed. Therefore, if it is possible to buy a conductive adhesive, it is better to use the first method. It will be much faster, easier and more reliable. The cost of a 10-gram tube with this composition is 78 rubles. This amount is more than enough to repair several damaged heating threads.

Conclusion

So, we found out for what reasons the rear window heater does not work on the VAZ-2110. As you can see, you can solve this problem on the spot without referring to specialists. We hope this article helped you in deciding why the rear window defroster does not work on the VAZ-2110.