Why did the instrument panel illumination disappear on the VAZ-2114: does it not work and does not light up?

The search for possible reasons why the VAZ 2114 instrument panel may not work periodically worries one or another owner of cars of this model. It’s clear that if you don’t see a single parameter on the dashboard, you can only drive, as they say, by touch. True, there are certain specialists who still managed to somehow crawl to the base without all the evidence, but somehow I don’t want to follow their example.

And is it necessary to create possible troubles for yourself and increase the risk of getting into an accident? I think no! In today's article I want to tell you about the possible causes of a malfunction in the VAZ 2114 dashboard, and give some ways to repair it yourself.

Why does the VAZ 2114 instrument panel not work? A massive problem in our auto industry

The search for possible reasons why the VAZ 2114 instrument panel does not work periodically worries one or another owner of cars of this model. It’s clear that if you don’t see a single parameter on the dashboard, you can only drive, as they say, by touch. True, there are certain specialists who still managed to somehow crawl to the base without all the evidence, but somehow I don’t want to follow their example. And is it necessary to create additional troubles and the risk of accidents on the road? So the majority of those to whom this incident happened still get to work (or wherever they were going) by public transport in order to return to solving the problem in the evening on their own or with the help of a familiar mechanic.

The most common breakdown

Before digging into the inside of the car, check how securely the ground wire leading to the front panel is secured. A restless passenger in front often simply pulls him out of his place with his feet. To prevent the situation from repeating itself, after fastening it is worth insulating the wire from reach.

The situation is a little more complicated

Its signs are very characteristic:

• All indicators do not work:
  speedometer, tachometer, odometer, fuel level recorder, coolant temperature sensor;
• The rest of the equipment - optics, radio, even the panel backlight - turn on normally and do not act up;

• The ignition works properly, the car does not refuse to start;
• Fuse F3 is
  almost 100% . It is located in the mounting block and will have to be changed. But first you need to find out why it was covered, otherwise the new one installed will suffer the same fate. In most cases, a short circuit is to blame for burnout. On well-used VAZ-2114, the fuse often blows after each wash. Instead of carrying a spare one, you need to figure out where moisture is getting into it.

If the fuse is intact, this is not a reason to immediately leave it alone. It would be a good idea to remove it and check the contacts: if the fuse is live, but the terminals are oxidized, the circuit will be interrupted, and the device will stop showing any signs of life.

VAZ 2115 fuse diagram: even a child can figure it out

Much has been said about the importance of such a small component of automotive wiring as a fuse. Indeed, the smallest part made of fusible metal, which melts and breaks the circuit when the permissible values ​​are exceeded, can protect the car from short circuits, local power surges, and even fire

And besides, even a small child can actually figure out the VAZ 2115 fuse diagram

And besides, even a small child can actually figure out the VAZ 2115 fuse diagram.

What does a car enthusiast do if his beloved “iron horse” suddenly stops responding to individual orders? The windshield wipers or power windows suddenly stop working. What to do? Change the motor, and maybe the entire element, so to speak, as a whole? In fact, the first thing you should check is the fuses. It may well be that the whole problem is a spare part, the cost of which is comparable to a ticket for a city regular bus.

Location of relays and fuses in the mounting block: K1 – relay for turning on the headlight cleaners; K2 – relay-interrupter for direction indicators and hazard warning lights; K3 – Windshield wiper relay; K4 – lamp health monitoring relay; K5 – power window relay; K6 – relay for turning on sound signals; K7 – relay for turning on the heated rear window; K8 – headlight high beam relay; K9 – relay for low beam headlights; F1-F20 – fuses

Of course, replacing fuses only takes a professional a couple of minutes. However, you still need to get to a specialist. What if the ignition doesn't work? Order a tow truck? Expenses, expenses. But often it is enough to check the functionality of the fuses responsible for a particular block and spend the same five minutes replacing them. And your car will be like new again, and a visit to the service station can be postponed until there are really serious breakdowns.

The fuse box in the VAZ 2115 is hidden under the hood, on the driver's side. By opening the cover (it is secured with two simple latches), you get access to the fuses themselves and special tweezers, which are stored right there in the mounting block. It is very easy to decipher the designations of the relays and fuses located in the mounting block, especially if you have a diagram at hand. Relays are designated by the letter “K”, fuses by the letter “F”, the number allows you to determine the area of ​​​​responsibility of a given fuse or relay; the value in “A” (amps) means the maximum voltage level for this fuse. So, next to fuse F2, which is responsible for the turn signals and the operation of the hazard warning lights, a level of 10A is indicated, that is, this is the load the fuse can withstand. Excessive voltage will damage the fuse, but will preserve the integrity of the system itself.

Electrical diagram of VAZ-2115-20 cars (left half): 1 – headlights; 2 – fog lights; 3 – air temperature sensor; 4 – electric motor of the engine cooling system fan; 5 – blocks connected to the wiring harness of the ignition system; 6 – engine compartment lamp switch; 7 – block for connection to a single-wire type audio signal; 8 – sound signal; 9 – washer fluid level sensor; 10 – front brake pad wear sensors; 11 – oil level sensor; 12 – generator; 13 – engine compartment lamp; 14 – coolant temperature indicator sensor; 15 – starter; 16 – battery; 17 – relay for turning on fog lights; 18 – coolant level sensor; 19 – brake fluid level sensor; 20 – reverse light switch; 21 – windshield wiper gearmotor; 22 – oil pressure warning lamp sensor; 23 – block for connecting to the rear window washer electric motor; 24 – electric motor for windshield washer; 25 – instrument cluster; 26 – mounting block. Conventional numbering of plugs in the blocks: A - block headlights; B — electric fuel pump block; C — blocks of the mounting block, ignition switch, windshield wiper gearmotor; D — interior lamp

Hard case

Until now, situations have been sorted out when the torpedo still showed some signs of life. If non-working power windows, turn signals, and windshield wipers have been added to the devices, the issue is no longer a matter of relays and fuses.

There may be 2 options:

Geared motor

The most undesirable malfunction is a breakdown of the wiper motor. It rarely breaks, but cannot be repaired, so it requires complete replacement. Its price is low, so it is enough to replace the assembly part and the purifier will work again. The reasons for motor burnout are as follows:

• Constant loads and dry work;
• Wear of internal mechanisms;
• Moisture entering the housing and causing corrosion;
• Mechanical failure.

Note that in order to extend the life of the motor, the windshield wiper blade must be changed at regular intervals. When the brush wears out, the quality of sliding on the glass is lost, which is why increased load is transferred to the motor. Repairing a faulty windshield wiper yourself is possible, but requires experience in working with electrical appliances and mechanisms. Finding repair kits for this part is problematic, so it’s worth considering the option of installing a new motor. The rear wiper gear motor does not require significant maintenance, but does not tolerate overloads and operation on dry glass. Also, to extend the service life, it is worth considering the size of the wipers, because... A long cleaner is more difficult to move across the glass.

Private situations

General signs do not always indicate specific breakdowns. There may be exceptions.

If individual devices refuse to work, it is quite possible that this is their personal problem. You'll have to parse the specific pointer. It may have a cracked gear that needs to be replaced.

Also, why doesn’t the instrument panel of the VAZ 2114 work? If the fuel gauge and tachometer are capricious (either they function, or they don’t react at all), the contacts and the mounting block are normal - you need to do a small check.

Reset is pressed and held, and the ignition is turned on at the same time. Raised arrows indicate the need for further searches. Lifeless - that microcracks have appeared in the shield itself. You will have to remove it and examine all soldering and traces under a magnifying glass. In principle, these are all the main options. If calling all the listed components and parts did not lead to the revival of the instrument panel, your case is individual, and you will have to determine the situation in the company of an experienced auto mechanic.

Tidy 2115: description and purpose of buttons and knobs

If everything is simple with the levers on the steering rack, there is a headlight position switch and a turn signal switch on the left. Buttons are more difficult.

On the dashboard, the main keys are placed in a separate “strip”. To understand the essence, we present their decoding from left to right.

1. Switch for outside parking lights.
2. Activation of low beam headlights.
3. Front fog lights.
4. Rear PTFs. If not installed, reserve.
5. Rear window heating button.

Lada 2115: the oil light on the center panel is on

If an icon in the shape of a watering can appears on the console, this indicates that there are problems in the engine lubrication system. This is caused by a drop in the oil level in the crankcase or a pump malfunction. If the engine is old, the problem may be caused by clogged oil lines.

What does the exclamation mark on the Lada 2115 tidy mean?

On the "tag" the symbol is used in only one form - a red indicator in a circle. The icon indicates a malfunction in the vehicle's brake system. If this symbol lights up while driving, stop and find the cause of the breakdown. Usually it is enough to add fluid to the expansion tank or replace worn pads.

The battery light on the dash is on 2115

A red battery icon indicates that the battery is not charging properly. A complete diagnosis of on-board systems associated with the generator set and its wiring is required.

Reasons for turning off the dashboard on the VAZ 2114

Turning off the dashboard lights does not bode well for either the driver or the car. Because this malfunction is usually followed by others. Therefore, the backlight should be repaired immediately.

You should also understand that if the lights on the dashboard go out, then the problem must be looked for somewhere in the on-board electrical system. This means you can’t do without a multimeter, a soldering iron and electrical tape. Here are the main reasons for turning off the backlight:

• fuse burned out;
• the light bulbs have burned out (or LEDs - in later VAZ 2114 models the panel is illuminated by them);
• the wiring in the on-board electrical network is damaged;
• The common contact board of the instrument panel burned out.

Let's consider these points in more detail.

Burnt fuse

80% of cases when the backlight turns off is due to a blown fuse. It is located in a safety block installed under the steering column of the car. Usually the fuse indicated in the documentation as F10 is lit.

It is he who is responsible for the dashboard lighting, side lights and license plate lighting. On early VAZ 2114 models, fuse F10 was brown or red.

On later cars they started putting green ones. It is not difficult to understand that the fuse has blown. It's enough just to inspect it. The housing of a blown fuse may be slightly blackened or melted, and the conductor inside the housing may be severed. The faulty fuse is replaced with a new one. Typically this solves the problem.

Burnt out light bulbs

Dashboard lights operate under less than ideal conditions. They are regularly exposed to shaking, power surges in the car's electrical network and temperature changes. All this significantly reduces their service life. Especially if these are not LEDs, but ordinary incandescent lamps, which were equipped with the first VAZ 2114 models. There are a total of 19 lamps (but this number also varies depending on the year of manufacture of the car, and the number of lamps should be specified in the technical documentation for the car).

Another reason for light bulbs to burn out is their improper installation. This is most often observed on early VAZ 2114 models, where drivers decide to independently replace obsolete incandescent lamps with new LEDs, making some changes to the electrical circuit. Without proper qualifications, this operation is not so easy to perform. Here's what the sequence for replacing light bulbs looks like.

The steering column is lowered to the bottom position until it stops. Above it is the dashboard cover with four mounting screws. They are unscrewed with a Phillips screwdriver.

Video: changing light bulbs in the dashboard of a VAZ 2114

Wiring damage

Problems with electrical wiring are the worst case. To figure this out on your own, the driver needs to have serious knowledge of electrical engineering. In particular, he must be able to read automotive electrical circuits well. Not all car enthusiasts can boast of such skills. It is for this reason that it is better to entrust the search for a damaged section of on-board electrical wiring to a qualified auto electrician.

His actions boil down to the following: he determines the key sections of the circuit and sequentially “rings” them using a multimeter until he finds a broken section of the wiring. Completing this work may take several minutes or several hours - it all depends on where exactly the circuit break occurred.

Panel contact board problems

If all of the above measures do not lead to anything, the last option remains: damage to the contact board in the dashboard. This part is a combination of several microcircuits. It is not possible to repair it in a garage without special diagnostic equipment. So the car owner has only one option - to replace the entire board. You can purchase it at any auto parts store. It costs about 400 rubles. Let us list the stages of its replacement.

1. First, all the steps mentioned above in the paragraph on replacing light bulbs are performed.
2. But instead of unscrewing the bulbs, you should unscrew the four bolts at the corners of the rear wall of the dashboard.
3. The back wall is carefully removed along with the board, which is attached to the wall with plastic latches.

So, the owner of a VAZ 2114 can solve most problems with the dashboard lighting on his own. All that is required is the ability to use a screwdriver. The exception is the case of damaged wiring. It is strongly recommended that you contact an electrician to identify the damaged area. This will save a lot of time and nerves, which, as we know, are not restored.

Why did the instrument panel illumination disappear on the VAZ-2114: does it not work and does not light up?

The dashboard is the driver’s first indicator of the car’s health, as well as a way to control various on-board systems. During the day, by and large, the instrument lighting is not needed, but at night it is a necessary component for safe driving. Thus, a malfunction of the backlight can even lead to an accident, so if a malfunction occurs, it must be eliminated as soon as possible.

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vetatto 08 Dec 2012

Hi all. I encountered a similar problem. All lights do not light up (On the instrument panel the lights/low beams do not light up. The lights do not light up on one side (when turned on, the left side does not light up; when armed, only the right side blinks). The high lights light is on, the headlights are on, I inspected all the fuses (on They look alive). .

The instrument panel backlight has disappeared, what should I do?

The dashboard going out is a nightmare for any driver, since with the disappearance of the light, other malfunctions may follow, such as non-functioning speedometer and other indicators.

Therefore, it is worth understanding that if the instrument panel does not light up, then this problem must be eliminated immediately , but not all car enthusiasts are capable of this.

It is worth understanding that if the backlight disappears, then the problem lies somewhere in the electrical circuits. This is where you need to look for the problem. This will require design knowledge of the vehicle's on-board circuit, a tester and related tools, such as electrical tape, a soldering iron or more. Of course, it is not always possible to eliminate the problem locally, and faulty products have to be replaced completely.

Causes of malfunction

Where does the problem lie? As mentioned earlier, it is worth looking for problems in electrical circuits. Let's look at the main locations where problems may be hiding:

• Fuse.
• Backlight bulbs and their electrical circuit.
• Wiring.
• There is a fault in the fuse box.
• Damage to the board.

Solutions

So, when all the main reasons are, so to speak, “in the face,” you can try to determine the exact location of the breakdown, and also fix it yourself. As always, it is worth noting that if a motorist does not know the design of the car or is not confident in his abilities, then it is recommended to contact a specialist car service center.

Fuse

General view of a blown fuse

Probably the first cause of all electrical circuit malfunctions is the notorious fuse.

This is where you should start troubleshooting. To find out which fuse is responsible for the instrument lighting, as well as its location in the mounting block, you should refer to the technical documentation. Also, on the fuse cover it is written which element should be checked. If the fuse is found and replaced, but the problem does not go away, then you should look for the source in another place.

Light bulbs

By bulbs we mean LED lights, which are often connected incorrectly, which is the reason for the dimming of the light on the dashboard.
In this case, all contacts in the backlight are checked. If we talk about incandescent lamps, then even the breakage of one element leads to the fact that the backlight stops functioning. The test is carried out with a tester, ringing the entire circuit.

To summarize, we can say that the main reason for the lack of backlight on the dashboard is often a short circuit. It will not be difficult to inspect and, if necessary, repair yourself. But you can also contact a car service center, where such work will be carried out more professionally.

Let's look at the problem: the backlight of the VAZ 2114 instrument panel does not light up

An element such as the dashboard is very important for the driver - because it is thanks to it that he can control the most important parameters of his car while driving. And that is why a serviceable instrument panel ensures not only comfortable driving, but also the safety of the motorist and his passengers.

For a clearer perception of instrument readings on the panel, especially at night, it has a built-in backlight. True, situations often occur when the backlight of the VAZ 2114 fails. We’ll talk about why this happens and how to restore its functionality with your own hands below.

The speedometer needle jumps and twitches

In this situation, the diagnostic adapter will once again help us. It costs a penny, but with the right approach it often helps out.

How can the adapter help us?

The bottom line is that on cars with an engine management system, the signal from the speed sensor is supplied in parallel to the instrument panel and to the engine control unit (ECU). And in some cases, to the ECU, and from the ECU to the instrument panel.

Here I drew it in red for clarity

And as I always say, when we connect the adapter to the diagnostic connector, we begin to see everything “through the eyes of the computer.”

Therefore, it is no longer difficult to guess how to determine the direction of searching for the cause of the jumping speedometer needle.

A man is driving and watching the speedometer. I sit next to you and monitor the speed readings in the diagnostic program.

If the speedometer needle jumps, but the speed graph in the program is smooth, then the problem is in the direction of the instrument panel.

And if the arrow twitches, and the graph also has “dips,” then the problem is in the direction of the speed sensor and its drive.

This is exactly what happened in our case. These dips mean an unstable signal from the speed sensor.

This means that there is no point in going into the instrument panel. You need to move towards the speed sensor.

Causes of malfunctions

There are a number of reasons why the instrument lighting of the VAZ 2114 may stop working correctly.

The most common of them are:

• light bulbs have burned out or diodes have failed (with LED backlighting);
• contacts and connectors have oxidized;
• fuses are blown;
• damage has occurred in the wiring itself;
• the integrity of the common contact board has been compromised;
• Lost contact with the “mass”.

In order to find out the exact cause, you will have to perform dismantling work and carry out diagnostics. You don’t need any complicated tools for this—it’s enough to have a simple tester (multimeter) or voltmeter.

Diagnostic procedure

In order to remove the instrument panel, you will need a set of screwdrivers and two wrenches - 8 and 21.

The entire procedure is performed in the following order:

1. Unscrew the three screws and remove the trim.
2. Unscrew the five screws on the right side of the console and remove the screen.
3. Disconnect the negative cable from the battery.
4. Disconnect the wiring harness that goes to the cigarette lighter.
5. Disconnect the heater fan mount.
6. Unscrew the bolts responsible for fixing the steering block brackets.
7. Remove the light bulb sockets, light guide and decorative insert.
8. Remove the lamp responsible for illuminating the hydraulic corrector.
9. Unscrew the screws of the top and bottom rows of the panel and completely dismantle it.

At this point, dismantling the panel can be considered complete. Now you can move on to finding the reasons why the instrument panel of the VAZ 2114 does not light up.

Once the panel is completely removed, you should cover the electrical circuit of the wires with protective material to prevent dirt and debris from getting on it.

Checking the electrical panel backlight system is performed as follows. First, all light bulbs are checked for functionality. If they are in good condition, all connector contacts are cleaned of oxides (they can be treated with kerosene or WD-40). After this, the serviceability of the wiring itself is checked - to do this, it is necessary to “test” it using a multimeter.

If the test results show that all elements of the system are operational, but the backlight still does not work, then the problem lies in the fuse box - it should be checked and replaced with a new one (if necessary).

The fuse block is replaced only with a similar factory-made block. Using instead blocks designed for a different amperage, as well as various homemade spacers, is strictly prohibited. This can not only cause the failure of all electronics, but also lead to a fire.

It is also worth noting that replacing the fuse box should be done very carefully, without jerking, using special dielectric tweezers.

Solutions

First of all, you need to check the backlight bulb; if it does not work, it needs to be replaced. Also, the reason why the instrument panel in the VAZ 2114 does not light up may be a violation of the integrity of the wiring. You should call her. A damaged fuse and electrical circuit, as a rule, cannot be repaired - they only need to be replaced. Let's look at quick ways to solve these problems.

One or more light bulbs do not light up

One of the most common reasons why the dashboard lighting on a VAZ 2114 has stopped working is burnt out light bulbs. The electrical circuit of this model is designed in such a way that if one light source fails, they all stop working. To accurately determine the broken element, you will need to ring the entire system using a tester. Another reason for the lack of lighting may be the independent installation of LEDs instead of standard incandescent lamps. In this case, errors are often made in power distribution or the electrical parameters of LED elements are calculated incorrectly.

Wiring

Damage and cable breaks in the on-board power system are not uncommon on a VAZ 2114 car. To detect the break point, it is necessary to check all possible wires, which can only be found in the environment of the dashboard lighting. Also, the light bulbs may not light due to oxide deposits formed on the linings. To fix the problem, you need to take it apart and clean the entire pin group.

Fuse

Before you start calling a VAZ 2114 electrician, you need to disassemble the fuse box. Otherwise, the diagnostics will be incomplete and will not reveal the complete picture of faults in the instrument cluster lighting system. The cause of the breakdown should be sought both inside the wiring system and outside - in the seat. If during the inspection it turns out that the module is faulty, it should be replaced with a new one, since such equipment simply cannot be repaired.

The board is damaged

Violation of the connection diagram of the instrument panel system board on a VAZ 2114 is a more serious problem than the above. Despite the fact that many radio amateurs still repair and eliminate such a defect, in practice it is better to immediately replace it with a new one. The main reason why the backlight does not turn on in this case is a previous short circuit in the circuit. External signs of this will be as follows:

1. If the light source is an incandescent lamp, the wiring to the board will be black.
2. If LED elements are installed, a darkened place where they connect to the base will indicate the destruction of the microcircuit.

Important! After removing the panel, ensure that the surrounding area is as clean as possible to prevent moisture, dust, and debris from entering the electrical circuit.

Panel backlight upgrade

If the original dashboard lighting of the VAZ 2114 does not suit you, you can always modify it, thus improving its functionality and making it more pleasing to the eye. The first thing you need to do is purchase a new set of light bulbs. It is best to opt for LED ones - they have lower power consumption, have a higher light output, and also make instrument readings more readable.

True, you should first calculate the required number of LEDs to illuminate each device and alarm icon (there are 13 regular light bulbs in the dashboard, but more LEDs may be required. In case the replacement is made not with individual LEDs, but with LED blocks (lamps) , then their number will also be 13).

The process of upgrading the panel backlight is performed in the following order:

• dismantle the block;
• unscrew (counterclockwise) the original sockets, install the sockets for the LED backlight;
• install resistors and lamps in special sockets;
• bring the wires from the backlight to the common board and fix it on it;
• check the functionality of the new backlight;
• If everything works, reassemble it.

During such tuning, you should definitely monitor the condition of the instrument needles - they are a rather fragile element and, if handled carelessly, can easily bend, break or deform, as a result of which instrument readings may be incorrect. In addition, upon completion of the entire process, you should check whether the arrows are set to “zero” and, if necessary, adjust their readings.

Also, immediately after completing the installation of the new backlight, you should check the functionality of all electronic devices and components using the on-board computer. If all identifiers work correctly, then you can reinstall the instrument panel (proceeding in the same order as its dismantling (see above), but in reverse order).

Additional recommendations

If the dashboard on a VAZ 2114 does not light up, then the reasons for this are most often quite simple. In most cases, this is caused by oxidation of the contacts, and a little less often - by burnt-out light bulbs. Damage to wires and electronic components is quite rare.

That is why, before checking the entire electrical circuit of the dashboard, you must first clean all the contacts, even if they do not seem oxidized, and also test replace the light bulbs with new ones.

Sometimes the problem may be the wear of the cartridges themselves, in which case they will need to be replaced as well.