Often the car owners have a situation,when the rear brake lights are not lit. An experienced motorist can guess what the reason may be. Therefore, it will not be difficult for him to determine the source of the malfunction, to eliminate the problem. For beginners and inexperienced owners, it is advisable to contact specialists or learn reliable information on car repairs.
This article outlines the main causes of such a malfunction and provides recommendations for its elimination. The owner of the car can repair himself or contact the car service center.
The main reasons for this malfunction are:
Such malfunctions can usually occur on vehicles with high mileage. However, there are exceptions.
As can be seen from the above, there can be several reasons. But such knowledge is not enough, you need to be able to determine the location of damage, and also use diagnostic devices.
Action to eliminatemalfunction, largely depend on its external features. They determine the location of the alleged damage. The following are the three main manifestations of the failure of the stop indicators.
Если на машине полностью перестали гореть stop lamps, it is necessary to search for an open in wires, in the limit switch or a faulty fuse. Search for breakage should begin with the fuse block. On its cover is usually indicated the table, which circuit is protected by a fuse-link. If it is missing or information in it is unreadable, you can use the instruction manual of this car.
If the desired fuse is blown, change itit is impossible until the cause is determined. This usually occurs during short-term short-circuits or damage to the insulation of the wires and touching the housing. A similar effect is observed when water enters the electrical connections. In this case, it is necessary to dry the place in which moisture has fallen. To speed up the process, you can use a building hair dryer (with caution, so as not to melt the insulation of the wires or elements of the skin). Then it is necessary to remove the fuse from the holder and call the multimeter after it.
Often wires are rubbed at the place of their transition frombody to the trunk lid. As a rule, it is necessary to remove the skin to detect damage to the cables. Therefore, in the absence of proper experience, it is better to instruct this service center. If damage is detected, it is necessary to restore the insulation coating. To do this, you can use an ordinary insulation tape.
If the fuse is OK, you can assumefailure of the limit switch. It is in the pedal assembly. It is necessary to inspect the status of the switch and call it with a multimeter while the brake pedal is depressed. The multimeter should show a resistance of less than 1 ohm. If it is large or the switch has mechanical damage, it must be replaced. In view of the complexity of such an operation, it is better to assign it to experienced car service workers.
If both the fuse and the limit switch are nothave damage, this indicates a broken wire. To search for such a malfunction, an opening of the skin is also required. In the absence of experience, it is better to entrust these actions to car service.
In the event that a wire break is detected,It is necessary to clean the insulation layer from the wire, make a connection and insulate the joint. The break at the wire section is eliminated by soldering. To isolate the connection, you can put the heat-shrinkable tube on and heat it up to the fixation on the wire. When the terminal is broken, it is removed from the plastic housing and replaced with a new one, crimping the stripped end of the wire in it, then inserting it back.
If only one stop signal is not lit, thenThe lamp is most likely to malfunction or a bad contact in the chuck. In this case, you need to disassemble the trunk lining from the side of the car where a non-burning signal is detected. If necessary, remove the lamp unit, remove them from the cartridges or holders, carefully inspect the contacts in the cartridge and on the lamp base.
Наличие ржавчины, следов окисления (белый или greenish plaque), smoking, and also dust or moisture confirms that the stop light does not light because there is no or poor contact in the chain. Cleaning of the specified places will help to eliminate the malfunction. To remove rust and oxides, you need a sharp object, such as a screwdriver. Also it is necessary to check the serviceability of the lamp. To do this, you can use the multimeter or the voltage of the on-board network, led to the lamp wires through the fuse. The burnt out lamp is replaced with a similar new one.
If no additional brake light is lit, thisindicates a break in its wires or unreliable connection. It usually connects to one of the standard cartridges for stop-lamp bulbs. It is necessary to make sure that the wires are securely fastened and there are no signs of oxidation.
If available, cut off the damaged one.end of the wire, re-strip it and connect it to the chuck. If the cable is broken in another place, it is advisable to stretch a new one. It is better to use a thicker wire (to avoid repeating the malfunction).
If after carrying out the activities described aboveit is not possible to determine the reason why the brake lights are not lit, it is necessary to clarify the type of lamps used. They can be made on LEDs. Their installation has a number of features. Usually LED lamps have a certain polarity of connection to the on-board network of the car.
Manufacturers always take it into account when developing.Incorrect connection leads to the fact that the lamp is off. In some cases, such inclusion may cause damage. If a violation of the polarity of the connection is detected, this indicates that the car was repaired by an unqualified person.
LED lamps are very sensitive to throws.voltage in the on-board network (with it there is an increase in current through the LEDs, which leads to their destruction). The voltage may increase if the generator components (namely, the stabilizer) malfunction. Especially often this is manifested in domestic cars due to lower quality of production of components compared to more well-known brands.
Therefore, if the stop signal does not light up on the VAZ 2114 or on a different model (assuming the use of LED lamps), you should also check the generator and replace the damaged element, then replace the lamp.
Такая неисправность может возникать периодически and is associated with the wear of the entire generator. If the VAZ 2115 does not have brake lights and other breakdowns often occur, you should also consider replacing it with a more reliable car (in some cases it is more profitable than constantly investing money in endless repairs).
Довольно часто лампа стоп-указателя используется together with the overall illumination of the car. In one cylinder there are two incandescent filaments, one end of which is connected to the base, and the other two are connected to separate contacts. If the brake lights and dimensions do not burn, the loss of contact at the place of their connection with the body ("mass") of the car or in the cartridge is most likely. This may happen due to wire breakage or oxidation. The torn end is connected to the terminal by soldering or crimping. Oxides are cleaned with a sharp tool (knife or screwdriver); after repair, it is advisable to coat the joint with paint or grease to prevent re-oxidation.
Failure is quite rare whenthe car does not burn, not only the brake light, but the rest of the signs. This is usually observed on cars "drowned", one way or another who have been in the water (as a result of careless driving or accident). Even after thoroughly drying, the moisture still remains inside the interior trim and electronic components. Its presence leads to increased oxidation of conductive surfaces. In such a car, eliminating the failure of one system, one cannot be sure that it will not appear again.
Sometimes the reason why the brake light does not light on the car, there is a malfunction of the electronics. In this case, the car is better to take to the service station.
There are also exceptions, for example, whena defective light bulb comes across. In addition, lamps may burn out due to normal wear and tear. In these cases, the problem is solved by simply replacing them.
Do not forget that you need to apply only to proven workshops. Often, the intervention of unskilled workers leads to additional malfunctions.
