Instrument cluster lights (Audi A4 B5)

Instrument lighting

This section deals with the illumination of the indicator instruments. A description of the indicator lights, also located in the combined instrument panel, can be found in Chapter Tools and instruments. Dismantling the instrument lighting:

1. Remove the steering wheel (chapter Wheel suspension and steering).

2. Remove the combination instrument (chapter Tools and instruments).

3. Depending on the model, up to nine bulb sockets for instrument lighting are visible behind the combination instrument.

4. To replace, turn them to the left and remove them.

5. Glass-base bulbs of 1.1 W each form a single structural element with the socket.

6. Reinsert the lamp holder into the combination instrument and turn it to the right until it stops.

7. In vehicles with an on-board computer, five 1.1 W glass-base bulbs are used to illuminate the display.

8. Some instrument light bulbs, depending on the manufacturer, are equipped with orange protective caps. The caps can be installed on new incandescent bulbs.

The side light of the trunk is identical to the upper light of the trunk. The arrow shows the mounting hole for the lamp housing (1); the number "2" indicates an incandescent lamp.



A small light bulb (1) is used to illuminate the heating regulator. Through one light guide (2; here removed from the clamps) the lighting is distributed across all three scales of the adjustment knobs.







Four small bulbs are used to illuminate the manual climate control unit. The socket and bulb form one structural element that can be replaced with a screwdriver (turn a quarter turn to the left).



Glove box light: carefully pry the bulb housing (2) out of the mounting hole using a screwdriver. The spotlight bulb (1) is now accessible.





Removing the ashtray/cigarette lighter housing: open the ashtray (2), use a screwdriver (1) to remove the springs from the grooves in both recesses (arrows) and pull the housing back.



Here the ashtray/cigarette lighter light bulb (2) has been removed from the cigarette lighter (1) with the ashtray housing removed and turned over.

Heating lever illumination

1. Remove the radio receiver (chapter Tools and instruments).

2. Loosen the four screws in the radio mounting hole.

3. Remove the center console trim panel (the switches remain in place).

4. Pull back all three heating/ventilation rotary controls.

5. Unscrew the two Phillips-head screws underneath and remove the trim panel.

6. Remove the light guide from the clamps.



7. Now you can see the 1.2W glass-base bulbs inserted here.

8. The bulbs can be removed from the socket one by one.

Lighting of the manual control unit of the air conditioning system

1. Remove the radio receiver from the clamps (chapter Tools and instruments).

2. Loosen the four screws in the radio mounting hole.

3. Remove the center console trim panel (the switches remain in place).

4. Unscrew the four mounting screws of the manual climate control unit and remove the unit.

5. On the back side, turn the lamp holders to the left and remove them.

6. Bulbs with glass bases of 2 W each form a single structural element with the socket.

7. Both middle bulbs have a black border, both outer ones do not.

Front ashtray/cigarette lighter lighting

1. Open the ashtray (2) in the center console.

2. Insert a screwdriver into one of the two recesses behind the ashtray and press down on the retaining spring at the base of the ashtray housing.

3. This is easier to do if you shine a hand torch into the recess.

4. Repeat the same process with the second spring.

5. Remove the ashtray back together with the body.

6. Lift the small mounting plate and remove the bulb socket on the cigarette lighter.

7. Replace the lamp.

Glove Box Light

The glove box light is energized when the parking or side lights are on. It is switched on and off by a contact switch in the hinge.

1. Open the glove box.

2. Insert a screwdriver into the recess on the side of the lamp housing and carefully pry the lamp out.

3. After replacing the incandescent lamp (spotlight bulb 5W, length 36mm) reinsert the lamp housing, first with the side with the wire.

Gear indicator

A glass-base lamp is used to illuminate the gear indicator on the automatic transmission selector lever (1.2 W, form W according to DIN standard).

1. Remove the center console (chapter Salon).

2. Remove the bulb holder from the clamps on the left side of the selector lever console.

3. Remove the glass base lamp from the socket.

Light bulbs in switches

Almost all switches have illuminated symbols, but this lighting is not intended to be replaced. Therefore, in case of a defect, the unlit switch must be taken into account or replaced.

This article was copied from the website AudiManual.ru