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

Audio system



  1. To be convinced available a protective number code – for autoradio with the anticreeping coding.
  2. To disconnect the battery.
  3. To insert an unblocking bracket (sometimes is included in the package with the built-in autoradio) into four openings on corners of the forward panel and to pull out autoradio from the central console.
  4. Or to insert four suitable nailing or a piece of a wire in openings and them to deblock fixing springs.
  5. To pull out autoradio forward, if necessary in addition carefully hooking a screw-driver.
  6. To remove sockets of a wire and the antenna.
  7. At installation to watch that the fixing pin of autoradio behind entered the eye intended for this purpose in the dashboard. For this purpose it is necessary to keep autoradio absolutely horizontally.
  8. To press a little radio into an assembly opening that fixing springs were latched.
  9. To gather a number code at models of autoradio with the anticreeping coding according to the maintenance instruction.

 Help: the protective number code will need to be entered anew and in case of a detachment of the battery, replacement of a safety lock of autoradio or separation of wires of giving of food for autoradio.

At the left: on an illustration removal of autoradio by means of two unblocking brackets is shown (1 and 2). Unblocking brackets press on fixing springs (3), disconnecting them, thanks to it it is possible to take out radio from an opening for embedding.

On the right: to approach two fixing screws (2) forward loudspeakers, it is necessary to remove a covering carefully.

Removal of the loudspeakers located in the dashboard

In Audi 80 at the upper right and at the left in the dashboard there are loudspeakers. The description of removal and installation is given below.


  1. Small screw-driver carefully to lift a covering of the loudspeaker and to remove it.
  2. The loudspeaker is fixed by means of two screws with crosswise shliyets.
  3. At installation to press fixing pins in dredging on the dashboard.

Back loudspeakers are located in a covering of doors.

At the left: after a detachment of the loudspeaker attached to a reverse side of a covering of a door (black shooters point to fastening points), there is available a loudspeaker (2). It is also screwed directly on a covering (white shooters show on fixing screws).

On the right: the high-frequency loudspeaker (2) is established separately and fixed by a carving ring (1).

Loudspeakers in a covering of back doors

If back loudspeakers were installed at plant, they are in a covering of back doors.


  1. To remove a covering of doors.
  2. To disconnect the loudspeaker on a reverse side of a covering.
  3. To weaken three fixing screws of the loudspeaker and to disconnect a wire.
  4. High-frequency loudspeakers: to turn off a carving ring behind on dynamics, to disconnect a wire.