A4 Audi, User manual and to repair - Check of fires of stoplights//Audi A4 from 1994 g / Audis-A4-b5

Audi A4

since 1994 of release

Repair and car operation

A4 Audi
+ Running gear
+ Regular servicing
+ Engines
+ Turbo-supercharging
+ exhaust System
+ cooling System
+ Fuel tank and fuel pump
+ Air filter and absorption channels
+ injection System
+ Coupling
+ Transmission and main transfer
+ Suspension bracket of wheels and steering
+ Brakes
+ Wheels and tires
+ Electrotechnical equipment
+ ignition System
+ Lighting
- Alarm equipment
   Check of system of indexes of turns and alarm system
   Check of fires of stoplights
   The help at malfunctions
   Check of a horn of a sound signal
   Light signal
+ Tools and devices
+ Heating and ventilation
+ body Details
+ Salon
Search of malfunctions
Technical characteristics

Check of fires of stoplights

Continuous control


  1. Fires of stoplights in Audi A4 receive power supply directly from accumulator plus (through a safety lock and the switch of fires of stoplights). It means that they should burn also by pressing a brake pedal without ignition inclusion.
  2. The wall behind the car on the right and at the left should be shined with red light if you press a brake pedal.
  3. Or at movement in a column check in a mirror of the back review, whether are reflected in reflectors of headlights or in varnishing going behind the car both of fire of a stoplight of your car.

Switch of fires of a stoplight

The switch of fires of a stoplight (3) settles down in an arm over a brake pedal. It should not be confused to ventilating valves (1 and 2) systems of adjustment of speed. 4–control unit blocking of departure of the car.

The switch of fires of a stoplight is in Audi over a pedal of a brake and is available only after dismantle of a reception pocket at the left (head Salon).

If the brake pedal is pressed, the pin of the switch is put forward and closes contact to stoplight lamps.

Adjustment of the switch of fires of a stoplight


  1. Dismantle a reception pocket at the left under a control panel (head Salon).
  2. Press a brake pedal a hand.
  3. With force wring out up the switch of fires of a stoplight in it directing.
  4. Now release a pedal of a brake and pull back against the stop.
  5. At the expense of it the switch of fires of a stoplight will become straight.
  6. Such adjustment is carried out only once at switch installation since after repeated adjustment the switch will not be clamped in directing rather reliably.

Check of the switch of fires of a stoplight

If both lamps of fires of a stoplight failed, check, whether is a malfunction source the switch:


  1. Disconnect the wire socket on the switch of fires of a stoplight.
  2. Close a writing paper clip or a piece of a wire contacts in the socket.
  3. If now fires of a stoplight burn (though still it was not), the switch is faulty.

 Council: Do not confuse the switch of fires of a stoplight with the switch on a brake pedal from system of adjustment of speed. The last has an additional connection to a vacuum hose.