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
   + System of ignition and engine management
   + System of preheat of the diesel engine
   + Diagnostics of systems of electronic control and diagnostic equipment
   - Systems of charging and start
      General information
      The battery - the main data and acquisition of the new battery
      Check and charging of the battery
      Replacement of the battery
      Storage of the battery
      System of charging - general information and security measures
      Check of system of charging
      Removal and installation of the generator
      Removal and installation of the regulator tension/replacement of brushes
      System of start of the engine - the general information and precautionary measures
      Removal and installation of a starter
      Check of system of start 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





Check of system of charging

If you found malfunction in system of charging — malfunction of the generator cannot be the only cause. Execute the following checks.

  • Examine a driving belt and be convinced that it is tense and it is not damaged. At detection of damages replace it (address to the Head the Current leaving and service).
  • Be convinced of that bolts of fastening of the generator are reliably tightened.
  • Check conducting of the generator and all sockets. All contacts have to be reliable and not oxidized.
  • Check the corresponding safety locks located in a motive compartment (address to the Head Onboard electric equipment). At detection burned down eliminate the reason of burn-out of a safety lock and replace it (at burn-out of the corresponding safety lock you will not be able to start the engine or to include any of devices).
  • Start the engine and be convinced that from the generator foreign sounds are not distributed (whistle or squeal can signal about malfunction of bearings or wear of brushes).
  • Be convinced of that the battery is completely charged. If one of cans is damaged, the battery can consume excess current.
  • Disconnect tips of wires from the battery (at first negative). Examine plugs of the battery and tips of wires. At detection of traces of corrosion carefully clear them (address to the Head's materials the Current leaving and service). Attach tips of wires to plugs and reliably tighten.