Audi A4

Since 1994 of release

Repair and car operation

Audi А4
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ Exhaust system
+ Cooling system
+ Fuel tank and the fuel pump
+ The air filter and channels всасывания
+ Injection system
+ Coupling
+ Transmission and the main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tyres
+ The electrotechnical equipment
+ Ignition system
+ Illumination
+ The alarm equipment
- Tools and devices
   Check of control tools and bulbs
   The combined device
   The indicator of quantity of fuel
   The indicator of temperature of a cooling liquid
   Auxiliary devices
   Control bulbs above in the combined device
   Control bulb of a cooling liquid
   Control bulb of level of a brake liquid
   Control bulb of pressure of oil
   Control bulb of indexes of turns
   Control bulbs in devices of the round form (and nearby)
   Control bulb of indexes of turn on the trailer
   Control bulb ASR
   Control bulb of the lock of ignition
   Control bulb of headlights of a headlight
   Control bulb of a pillow of safety
   Control bulb ABS
   Control bulb of a lay brake
   Control bulb of gymnastics of the accumulator
   System of the autocontrol of the car
   The ignition lock
   Check of switches
   Alarm buzzer of illumination
   Cigar Lighter
   Warmed back glass
   Check of screen wipers and windscreen
   The engine of screen wipers
   The help at malfunctions
   Gulf of a liquid for washing of glasses
   System of washing of headlights
   Adjustment of a mirror with the electric drive
   The central lock
   window raiser with the electric drive
   Sliding/demountable roof with the electric drive
   Radio receiver
   The aerial on back glass
+ Heating and ventilation
+ Body details
+ Salon
Search of malfunctions
Technical characteristics

Control bulb of level of a brake liquid

The control bulb of brake system at ignition inclusion blinks at carrying out of the functional control, at the working engine it should go out.

If it blinks longer or burns during movement it is necessary to stop and check up level of a brake liquid at once. Probably, tightness in one of brake contours is lost, and it thereof has failed that you in addition feel on the extended course of a pedal (adjustment of a pedal of a brake and the information on this theme in the head of the Brake).

 Councils: the Lowered level of a brake liquid can be a consequence strongly worn out brake колодок. The reason: brake pistons in process of deterioration are put forward more from cylinders and release a place for the brake liquid which level, if to follow logic, in a tank goes down.

If the control bulb of level of a brake liquid lights up, you should measure a thickness колодок if will not find other defect. In this case do not add a brake liquid in a tank, and replace Pads. For this purpose it is necessary to wring out pistons in brake supports. A consequence: level of a brake liquid again will rise to nominal size. Wrongly filled in brake liquid will pour out from a tank.

Search of malfunctions


  1. Check of a control bulb.
  2. If at the working engine the control bulb burns, though liquid level in a broad tank is above a mark MIN, for the sake of experience disconnect a socket on the gauge of level of a liquid of a broad tank.
  3. If the bulb goes out, the gauge in a broad tank is faulty – replace a tank.