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

Indicator of cooling liquid

If the indicator of cooling liquid starts blinking during the movement, it is necessary to stop immediately.


  1. To check the level of cooling liquid (the head the Cooling system) and if necessary to add cooling liquid or water.
  2. If the engine hot, and the level of cooling liquid meets standard, it is necessary to check, whether the electric fan of the cooling system at the included ignition works. If it costs, despite the heated engine, it is necessary to address to the list of malfunctions on the cooling system fan (the head the Cooling system).
  3. Last opportunity: neipraven one of two sensors of this indicator (see the following section).

Search of malfunctions of the indicator of cooling liquid


  1. Check of the indicator: at ignition inclusion the indicator of cooling liquid blinks for action check. If it does not occur:
  2. To check the corresponding safety lock (the head the Body electrical system).
  3. If he is serviceable, it is necessary to remove a combination of devices, to remove and check the indicator.
  4. If a bulb as it should be, it is necessary to check a wire or to replace the block of minisystem.
  5. Check of the temperature sensor in the motor block: if the indicator blinks even at cold or (working) engine having normal working temperature, that, possibly, the temperature sensor is faulty.
  6. To separate the multicontact plug at the temperature sensor: the bulb has to go out.
  7. To bring a wire to the indicator of cooling liquid to "weight": the bulb has to start blinking again.
  8. If so occurred in both cases, so the bulb is serviceable; that is the reason should be looked for in the sensor or conducting. Or in the sensor of level of cooling liquid.
  9. Check of the sensor of level of cooling liquid in a broad tank:
  10. The sensor is installed from below in a compensation tank and rigidly connected with it.
  11. If the indicator blinks despite the right level of liquid, it is necessary to disconnect a wire from the sensor.
  12. If after that the blinking stops, it is necessary to clear the sensor in a tank or to replace a tank.