Audi S4

since 2000 release

Repair and operation of the car



Audi 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 the parking
   Replacement of the battery of the 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 side 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 the 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 the fuel tank
   Digital tire of data of CAN
   + Schematic diagrams of electric equipment





Onboard electric equipment

General information

Cars of this brand are equipped with 12 V system of electric equipment with grounding on a negative pole. Power supply of all lighting fixtures and electric units is carried out from the battery of lead-acid type recharged from the generator of alternating current.

This Head is devoted to the description of procedures of service and repair of a component of system of onboard electric equipment which number treat except concrete considered below also all lighting fixtures and electric accessories which are not connected directly with the engine. Besides, procedures of diagnostics of malfunctions of electric equipment of the general order are considered. Information on the battery, the generator and a starter is provided in the Head Sistemy of electric equipment of the engine.

When performing any works on repair and service a component of system of electric equipment it is necessary to disconnect without fail previously a weight cable from the battery in order to avoid receiving an electric trauma and/or ignition.