Why does the backlight on the instrument panel of the VAZ 2109 not light up?


The backlighting of the VAZ 2109 instrument panel is often not satisfactory for drivers. You can change the color and its brightness yourself, without turning to the salon for help.

To improve the lighting, you need to install LEDs instead of conventional incandescent light bulbs. Their glow is much brighter, in addition, you can choose the color of the backlight at your discretion: blue, green, red or white. These are the main colors, but if you look, you can also find purple LEDs.

Replacement of light bulbs or sockets must be carried out carefully and carefully. If the car owner decides to use LEDs to illuminate the buttons, then you need to purchase a light bulb with a regular base. Soldering and a special cartridge are needed if there is a desire to replace the backlight of the instrument cluster. Among the many LEDs, there are also those that have a diffuse or, conversely, point glow.

These effects are achieved using a focusing lens configuration. A more uniform backlight is suitable for illuminating the scale on the instrument panel, and a brighter light is suitable for the button icon. Every driver should take into account the features of design changes when improving his car.

Types of panels

Instrument panels on the VAZ 2109 are of at least three types:

  1. Low panel;
  2. High panel;
  3. Electronic panel on nines with Europanel.

On versions with a low panel, failure of the entire panel is extremely rare. This is due to the fact that here the speedometer and econometer are equipped with mechanical drives. Therefore, it is unlikely that they will fail along with the electrical component.

Messages 11

1 Topic by Andrey08 2009-12-16 13:01:12

Topic: Not Working: All Tidy, Wipers, Fern Guard on VAZ 21099

My friend has a VAZ 21099 injector.

And recently the following happened: all the instrumentation stopped working (speedometer, tachometer, etc.), the wipers and ferns do not work. the headlights seem to come on

Today I talked to him, they say in the morning everything worked fine, but in the afternoon it immediately turned off right on the go.

I advised him to pay attention to the fuse box (they say the frost has hit, condensation is forming or it’s just wet)

I would like to hear your opinion, what do you think about this? mb has this happened to anyone?

2 Reply from maik 2009-12-16 19:38:20

Re: Not working: All tidy, wipers, fern on VAZ 21099

My friend has a VAZ 21099 injector.

And recently the following happened: all the instrumentation stopped working (speedometer, tachometer, etc.), the wipers and ferns do not work. the headlights seem to come on

Today I talked to him, they say in the morning everything worked fine, but in the afternoon it immediately turned off right on the go.

I advised him to pay attention to the fuse box (they say the frost has hit, condensation is forming or it’s just wet)

Why doesn't it light up?

  • First, remove the cover of the mounting block and make sure that the fuse is intact. The fuse markings are located on the inner surface of the cover. You should look for fuse F16 or F5, depending on the year of manufacture of your VAZ 2109.
  • If the fuse is intact, be sure to check whether the contacts of the fuse you are looking for have not oxidized. It is not uncommon for shields to fail due to broken contact.
  • Check if there is power to the dashboard. To do this, you will need a warning light and the ignition on. Disconnect connector X4 in the mounting block and check for voltage at pin 3. The disadvantage of the VAZ 2109 design is that when it rains, the mounting block immediately becomes wet. This causes oxidation of the contacts in the pads, which causes the electrics to stop working. Sometimes not only the contact is oxidized, but also the board of the Nine mounting block.

If none of the above actions yielded results, you will have to be disappointed. After all, now you need to remove the dashboard and check the condition of the wiring, contacts, and negative connections. Here it is better to trust a professional electrician or set aside a whole day to troubleshoot problems yourself. There is no need to rush here.

Features of backlight replacement

How to change the panel, making it a designer one? You need to be extremely careful and precise when removing and disassembling the dashboard, so as not to subsequently disturb the correctness of its readings. Often, during disassembly, the chrome plating of parts suffers. So be patient and get to work.

First, remove the dashboard panel. You can read about how to change it in the repair instructions for your car brand. Then remove the instrument cluster, disconnect the plugs, bend the speedometer cable and replace the bulbs. Gradually remove the filters from the buttons. It is better to leave the green-blue light spectrum on the panel unchanged, but replace the green filters completely.

You can make the rear window heating button illuminated orange, and the fog lamp button illuminated turquoise. This shade can be achieved by passing the white color of the LED through a green filter. The reflector can be foil secured with double-sided tape. The hazard warning lights should be red (like in foreign cars). In this case, maintaining polarity is of particular importance.

In a ring filter, using a file, you can make triangular slits through which the light will be scattered. The overall illumination pattern will become more uniform. It's time to check the performance of the LEDs. Only after this check can a constant voltage of 12 V be supplied.

Instrument needles are often replaced with special ones with backlight. This effect is achieved by a lamp located near the axis. Every driver who has basic knowledge of car mechanics and puts in a little effort can boast of a beautiful dashboard. Improve the design of the VAZ 2109 and enjoy it!

In the previous article on the topic of tuning the backlight of the VAZ 2109 dashboard, the option of LED backlighting without serious intervention in the tidy was considered. There we simply replaced the backlights with LEDs, so although there is an effect, over time you want more. The expectation for more comes down to the fact that on the next generations of Samar devices and on foreign cars, the instrument dials are illuminated from the inside, and it looks as if the numbers and instrument scales themselves are glowing. The instrument panels of the VAZ 2109 and VAZ 2108 are illuminated by lamps that emit their light onto the dials from the outside, from the pointer side, while the brightness and detail of such illumination is low.

Let's try to illuminate the instrument panel from the inside, like on foreign cars, using the tall panel of the VAZ 2109 as an example. It should be noted that tuned instruments from specialized companies are quite expensive, so you can save a lot of money by modifying the instrument panel yourself.

To do this, we need a light-transmitting overlay on the instrument panel, like this one:

We remove it from the car and disassemble the instrument panel, remove the instrument arrows and remove the old trim. In order for the illumination light to fall on the overlay from the inside, we make cutouts on the surface under the overlay. This can be done using a heated knife or soldering iron.

Now let's do the lighting itself. It will be organized on the basis of an LED strip. We use tape, which is cut into pieces of three diodes. To make the glow uniform, we make a reflector from ordinary foil.

Popular faults

If we talk about the dashboard of VAZ 2109 cars, then they are characterized by certain problems. We will tell you about them, and also tell you how to act correctly in a given situation.

Fault typeYour actions
Gasoline level and temperature indicator does not workIn most percent of cases, this situation occurs due to breakdown of devices, sensors of these devices, or an open circuit of the power supply. Therefore, first check the circuit for continuity, make sure that the fuses have not blown. If this is not the case, check whether the gas level and temperature sensors are working. Only if none of the actions allowed you to get rid of the breakdown, you can begin to replace the devices themselves. No options, the problem lies in them
When the fuel tank is full, the arrow points to zeroIf you have worked on the fuel level sensor, the fault most likely lies with you. When manipulating this device, the float limiter is often knocked down. Either the limiter is installed incorrectly or adjusted, causing the resistor winding to end. To resolve the problem, remove the sensor and then adjust the limiter again
The fuel gauge needle regularly jumps and ends up at zeroHere, most likely, the resistor has weak contact with the current collector. Another possible option is that there is a break in the resistor. To resolve this situation, we recommend replacing the hot level sensor with a new measuring device
The fuel level lamp is constantly onIf this lamp is constantly on, there is probably a short circuit in the fuel level sensor supply wiring to ground. Another option is that the sensor’s flexible bus is shorted to the fuel intake pipe. You will have to disassemble the device to align the bus and get rid of the resulting short circuit
Indicator lamps do not work on the dashboardThere is a high probability that the light bulbs have simply burned out, or they are poorly held in their seats due to loose contact. Replace the bulbs, but first try tightening the contacts. Traces of oxidation may be detected. When cleaned, the light bulbs can work normally again. Also, do not exclude the possibility of wiring breakage or oxidation of the tips of the supply wiring. Try going over the wires with a tester, cleaning the contacts if necessary.
The speedometer does not work, the flexible shaft is noisyIn such a situation, you will have to change the speedometer drive cable or replace the entire speedometer assembly. But before you bother so much, check that the fastening nuts of the tips are tightened correctly and properly. The flexible shaft may make noise during operation due to deformation or violation of the permissible bending of the shell of less than 10 centimeters during installation

The instrument panel of the VAZ 2109 is not so complicated that you cannot figure it out on your own. But in the absence of experience, it is better to entrust the repair to specialists, or to enlist the support of a partner who understands this matter.

Didn't find the information you are looking for? on our forum.

Dismantling lighting

The diffuser is held on the base of the housing by a spring latch. Place the end of a flat-head screwdriver under the lampshade in the center and press lightly, removing the latch. After this, pull down and remove the glass cover from the lamp. Care must be taken to preserve the appearance of the lamp parts. Experienced specialists recommend placing a piece of cloth or paper on the end of the diffuser where you work with a screwdriver.

The light bulb can be removed and checked. Further dismantling is done using a Phillips screwdriver, the bolts that hold the plate and secure the base of the lampshade to the ceiling are unscrewed.

The four wires you disconnect should be labeled. Two of them are mass, and the obligatory “+” and “-”. When disconnecting wires, mark them so that there are no problems during assembly. If the new light is on, you don’t have to disassemble it any further.

The directional light canopy is removed in the same way, pryed off with a flat screwdriver and removed from the socket in the ceiling trim. Then mark the wires and disconnect them. Initially, all contacts are marked during assembly at the factory, but often when working in a cramped and poorly lit interior, the markings are difficult to see.

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VAZ 2109 stop light on the instrument panel | Topic author: Fawziyya

The red stop light is on on the instrument panel, but not the handbrake. Initially it was blinking. Previously, this only happened when the car almost stalled, for example, now it lights up even when the engine is running normally. What is the reason? Has anyone encountered this?

Alexander (Aibhlinn) Try topping up the brakes

Konstantin (Jeronym) is almost at minimum..)

Yurets (Saskia) agrees with Alexander.

Sanya (Melbah) do you need brakes and that’s it?

Denis (Hillard) share! and most likely the pads have worn out

Taras (Haniel) What does the brakes have to do with it. Maybe his oil pressure light comes on along with the stop light.

Evgeny (Amana) same problem, stop and oil pressure lights up at low speeds, oil level is normal!

Evgeny (Amana) this happened after the engine was rebuilt, maybe something was done wrong with the oil pump during installation?

Evgeny (Amana) before the engine repair nothing was burning, they went through everything, restored it, I started the temperature, everything started blinking, stop and oil pressure, before the repair it didn’t blink and nothing was clogged!

Maxim (Fauzi) clean the oil receiver.

Igor (Ester) look at the button on the handbrake!!

Yury (Jaganu) Does the car keep speed normally? Doesn't twitch at idle?

Svetlana (Beaufort) What if the stop light is on and the size indicator is below? Zhizhka have new brake pads and the handbrake switch do not dull the oil normally?

Svetlana (Beaufort) Denis, dressed

Alexey (Vivasvata) hello, the problem is this: when starting the car, it works fine, nothing lights up, after driving, when the temperature is about 90 when the car stops, that is, at idle the stop and oil can begin to blink, (the oil is normal) if you give the gas a little, it disappears, When you start moving, the oil and filter are changed too, maybe someone has had this problem, tell me what to do

Svetlana (Beaufort) Yuri, twitchy at idle and when driving

Maxim (Fauzi) if it twitches, then most likely change the idle speed sensor,: - issue price 150 rubles

Maxim (Fauzi) I have the same problem with the stop, so I read it and figure out what’s what)

Nariman (Nicole) I have a stop blinking on the panel and after stopping, as soon as you turn off the car, it still won’t start. But when I try to start it with the same Akum, the starter clicks and the panel goes out. And during the night it’s been parked, it’s already killed 2 new Akums. With it running when you turn on the headlights and heater, both work poorly

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