Audi A4, S4

since 2000 release

Repair and operation of the car



Audi A4, S4
+ Introduction
+ Governing bodies and methods of safe operation
+ Current leaving and service
+ Engine
+ Cooling systems, heating and air conditioner
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of electric equipment of the engine
+ Manual box of gear shifting
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
- Onboard electric equipment
   Specifications
   Diagnostics of malfunctions of onboard electric equipment - the general information
   Rassoyedineniye of sockets
   Check of the electric motor of a screen wiper
   Check of the warmed back glass
   Check of stoplights
   Removal and installation of a sound signal
   Removal and installation of sensors of a parking
   Replacement of the battery of a remote control of the ignition key
   Relay and safety locks
   Replacement of glow lamps of devices of external lighting
   Removal and installation of headlights
   Removal and installation of the lateral repeater of turns
   Removal and installation of an additional stoplight
   Removal and installation of a back lamp
   Removal and installation of a lamp of illumination of registration plate
   Removal and installation of plafonds of internal lighting
   Removal and installation of a control panel
   Removal and installation of the understeering switch
   Removal and installation of switches of a forward door
   Removal and installation of the switch of light
   Removal and installation of the switch of a window regulator in a back door
   Removal and installation of the switch of a trunk lid
   Removal and installation of the switch of the parking brake
   Removal and installation of the switch of illumination of a ware box
   Removal and installation of switches of the central console
   Removal and installation of the radio receiver / navigation device / CD changer
   Removal and installation of loudspeakers
   Removal and installation of antennas
   Removal and installation of the tank of liquid of the windscreen washer/electric motor of the pump
   Removal and installation of the electric motor of screenwash
   Removal and installation of the electric motor on back glass (Station wagon)
   The uniform lock - the general information
   Removal and installation of a locking element of a cover of a fuel tank
   Digital tire of data of CAN
   + Schematic diagrams of electric equipment






The uniform lock - the general information

The uniform lock consists of the control unit and various elements of adjustment with the built-in electric motors.

Adjusting elements are in the doorway built-in in the lock and have respectively two electric motors. One electric motor blocks a door, the second blocks the drive of doors. In this case doors cannot open from within. Elements of control of doors can be replaced only together with the corresponding locks.

Adjusting elements of a cover of a tank and cover of a luggage carrier/door of a back have on one electric motor and can be replaced separately.

After accident in which the safety cushion participated, the control unit of the uniform lock automatically unlocks all locked doors.

The control unit of the uniform lock is before the driver's seat under a rug.











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