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 system of indexes of turns and alarm system

Continuous control

The system of the alarm system should be always in working condition therefore its switch receives a food from accumulator plus directly through a safety lock. On the contrary, indexes of turns receive tension from the plug 15 only at the included ignition.


  1. At the switched-off ignition press the switch of the alarm system on a control panel.
  2. All six lamps of indexes of turns, control bulb in the switch of the alarm system and both control bulbs of indexes of turns flash in one rhythm.
  3. Switch off the alarm system, include ignition.
  4. By pressing the lever of indexes of turn all lamps on the relevant party and a green control bulb relating to them rhythmically flash.

Violations in work of indexes of turns

  • If at the included ignition the green control bulb only shortly flashes, one filament lamp ahead or behind failed. But the failed lateral lamp of the index of turns is not registered. In a blinking of the alarm system the fused lamp too is not appreciable by a rhythm of work of indexes of turns. About replacement of lamps see in head Lighting.
  • If at the included indexes of turn or the alarm system lamps burn constantly, the relay breaker is faulty.
  • If indexes of turns blink that in slowed down, in the accelerated rhythm and all plug connections, including the wire of lamps connected to weight, as it should be – it is necessary to replace the relay in the switch of the alarm system.
  • If only the alarm system without indexes of turns or on the contrary works, tension through the corresponding safety lock (see the table in head the Electrotechnical equipment) does not move or the switch of the alarm system (about dismantle see head Tools and devices) is faulty.

Relay breaker dismantle

The relay breaker (1) in Audi A4 is integrated into the switch of the alarm system. It is dismantled the same as the keyboard switch in a control panel («Tools and devices»).

The relay breaker is in Audi A4 not on a support from the relay. It is integrated into the switch of the alarm system. Reason: economy of an assembly element. Here about dismantle:


  1. Carefully wring out a small screw-driver a switch key.
  2. Seize the switch from sides flat-nose pliers and take out from an assembly opening.

The temporary help at the faulty relay breaker

At the failed relay breaker the further trip is unsafe, especially in the dark participants of traffic will not know about your intention to turn. In this case:


  1. Dismantle the switch of the alarm system with the relay breaker and disconnect the socket.
  2. Make a crossing point between plugs 1 and 6.
  3. For this purpose insert from the back party a writing paper clip or a short piece of a wire into the corresponding nests so that to connect socket contacts.
  4. Zaizoliruyte wire.
  5. Now, if to press the lever of inclusion of indexes of the turns, one party burns constantly.
  6. Switching on and off the lever of indexes of turns, you receive a faltering rhythm.