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
   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


Check of the warmed back glass

At inclusion of heating of back glass the field with visible lines of wires has to be freed from a covering or snow after a while.


  1. With malfunctions check at first a safety lock in the block of safety locks.
  2. If a safety lock as it should be, remove facing of back glass and check reliability of connection of the plug at glass at the left and on the right. If necessary clear of corrosion.
  3. If heating still does not work, check the control unit of comfort electric equipment.
  4. If conductors of a heater are torn, it is possible to use a usual conducting varnish for repair. For this purpose clear the damaged place a thinner or ethylene.
  5. Paste over the damaged place on both sides of the gluing tape and put with a small brush a conducting varnish.
  6. Dry paint at a temperature about +25 °C within 24 hours. For this purpose it is possible to apply also hot air. At a temperature of +150 °C paint dries within 30 min.

Do not include heating of back glass before paint completely does not dry. Do not apply gasoline or other solvents to cleaning of the damaged elements.