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
- Signaling devices
   Verification of indexes of turn and alarm light system
   Check of a stoplight
   Stoplight switch
   List of malfunctions
   Check of a sound signal
   Short-term signal driving beam
+ Devices and auxiliary devices
+ Heating and ventilation
+ body Elements
+ Search of malfunctions
+ Specifications

Stoplight switch

The switch of a signal of braking is located in the Audi 80 car slightly above a pedal of a brake and becomes available only after removal of a shelf (section Salon) at the left. If you squeeze out a pedal, the pin of the switch moves forward outside and closes contact to brake fires.

After removal of a shelf at the left under the dashboard there is available a switch of a stoplight (1). It is in the holder slightly above a pedal of a brake (2).

Adjustment of the switch of a stoplight


  1. To remove a shelf at the left under the dashboard.
  2. To press a hand a brake pedal.
  3. With effort to give forward against the stop the braking signal switch on it directing.
  4. Now to release a pedal of a brake and to delay back against the stop the switch.
  5. Thanks to these manipulations the stoplight switch itself will adopt the necessary provision.

Check of the switch of a stoplight


  1. To disconnect a wire tip.
  2. To put a crossing point on connections of wires in the plug.
  3. If now brake fires light up, so the stoplight switch was faulty.