Audi 80/Avant (B4)

since 1991-1995 release

Repair and operation of the car

Audi 80/Avant
+ Technical specification
+ Engines
+ System of production of the fulfilled gases
+ Cooling system
+ Fuel tank and fuel pump
+ Air filter and airintaking channels
+ System of injection
+ Coupling
+ Transmission and transmission
+ Suspension bracket and steering
+ Brake system
+ Anti-blocking system of brakes
+ Wheels and tires
+ Body electrical system
+ System of ignition
+ Lighting
+ Signalling devices
- Devices and auxiliary devices
   Check of indicators and signaling devices
   Elements of a combination of devices
   Indicator of amount of fuel
   Indicator of temperature of cooling liquid
   Voltage stabilizer
   Additional devices
   The top indicators in a combination of devices
   Indicator of cooling liquid
   Indicator of brake system
   Oil pressure indicator
   Indicators of indexes of turns
   Lower indicators
   Battery charge indicator
   Indicator of indexes of turn of the trailer
   Safety cushion indicator
   Indicator of anti-blocking system
   Indicator of a driving beam
   Indicator of the parking brake
   System of self-examination
   Ignition lock
   Check of switches
   Buzzer of shutdown of lighting and radio
   Heating of back glass
   Check of screen wipers and windscreen washers
   Screen wiper engine
   List of malfunctions
   Screen wiper of back glass
   List of malfunctions
   Replenishment of a washer reservoir of glasses
   System of washing of headlights
   Audio system
   Antenna of back glass
   Electric regulation of external rear-view mirrors
   System of locks with the central management
   Power windows
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications


Removal of switches (toggle-switches)

At the left: to weaken three screws with crosswise shliyets (arrow). To uncover (1), to disconnect a covering with the lever switch (2).

On the right: the covering and the lever switch (1) are removed, disconnected multicontact plugs (2 and 4). Now it is only necessary to disconnect one-contact connection (3).

Keyboard switches are fixed by spring brackets (arrow). For removal it is necessary to extend a shelf (a white arrow) and to separate the plug (1).

For replacement of bulbs of illumination (3) and a symbol (2) to remove the keyboard switch (1).

At all-wheel drive cars in the central console one more keyboard switch (2) blocking of differential of the back bridge is located. As well as other switches, it too is simply inserted. For replacement of a bulb it is possible to hook and remove the button of the switch (1).

Models with 4-and 5-cylinder engines: on an illustration the removed panel with switches is shown:

1 and 2 – fixing partitions for screw connections;
3 and 5 – switches of power windows;
4 – central switch;
6 – switch of electric regulation of external rear-view mirrors. Shooters point to fixing ledges by means of which the first line of an element keeps in a door covering.

Models with 6-cylinder engines: for removal of the panel with switches (1) it is necessary to disconnect left an armrest (2) from a covering. For this purpose to turn out three screws with an internal hexagon in the lower part of an armrest. On an illustration keys for internal hexagons (arrow) are put to screws.

At the removed combination of devices both screws without head (2) holding the switch of the lock of ignition (3) are visible – on an illustration it is shown by the connected plug (1) removed together with.

Lever switches

Lever switches (toggle-switches) located at a wheel are assembled in Audi 80 in the complex block and by that can be replaced only in a complex. The description of removal is lower:


  1. To remove a steering wheel (the head Podvesk and a steering). Special care is demanded by work with a steering wheel of the models equipped with a safety cushion.
  2. To insert a screw-driver with a krestovy head on the right below into dredging on a covering of a steering column and to find the screw.
  3. To weaken a little the screw, but not to take out completely.
  4. To extend an element with the lever switch.
  5. To separate multicontact plugs and one-contact plug connection.
  6. If it is necessary to replace the switch, it is necessary to unscrew two screws in the lower part of a covering and to remove parts of a covering.

Keyboard switches

As a rule, three keyboard switches are located in Audi 80 under the central air vents on the dashboard. In this case nearby there is a small shelf. If switches more than two, the shelf, smaller by the sizes, is put, at full number of switches for it does not remain places absolutely. Thus, removal of switches differs also a little.


  1. To pull out a cap that it was possible to reach a reverse side of the nearby switch.
  2. Or to pull out a felt cap and to turn out the screw located behind it with crosswise shliyets. To pull out a shelf.
  3. The version without shelf: to remove autoradio (the description of it see below in this chapter) and with the connected wires to pull out from an adjusting nest.
  4. All versions: from a reverse side to squeeze out the switch from an adjusting opening
  5. To separate the multicontact plug.
  6. In the same way caps for installation of new press switches are removed.

Replacement of illumination of switches

Small bulbs with a glass socle for illumination of symbols, and also – in some of them – in addition bulbs for illumination of a "switch is switched on" symbol arrow are installed in keyboard switches. Replacement of bulbs:


  1. Carefully to hook a key a small screw-driver.
  2. To pull out a bulb with a glass socle sharp pincers or strong tweezers.
  3. To insert a new bulb with a glass socle.
  4. This method is suitable not for all versions of switches. If it is impossible to change a bulb, it is necessary to change all switch.

Switches in an armrest

In the top level of a polokotnik of the left door switches of electric regulation of external rear-view mirrors and power windows are located. Removal:


  1. Models with 4-and 5-cylinder engines: to turn out the screw(s) with crosswise vents in the lower part of an armrest, to remove this part.
  2. Now there were available two screws (in the models which are not equipped electric with window regulators – four) to the top part of an armrest – to turn out.
  3. Slightly to raise the top part of an armrest with switches and with effort to extend back.
  4. Now it is possible to unhook hooks at a forward end face of an armrest of edge of a covering of a door.
  5. Carefully to extend up the panel with switches.
  6. Models with 6-cylinder engines: to weaken in total three screws with an internal hexagon of 4 mm in the lower part of an armrest, to remove an armrest.
  7. To take out the panel with switches from an armrest.
  8. All models: to separate multicontact plugs.
  9. To unblock plastic clamps of switches and to take out switches down from a plate.