Audi A4, S4

Since 2000 of release

Repair and car operation

Audi A4, S4
+ Introduction
+ Controls and receptions of safe operation
+ Current leaving and service
+ The engine
- Systems of cooling, heating and the air conditioner
   - Cooling system
      The general information
      Antifreeze - a protection frame from freezing
      Replacement of a cooling liquid
      Removal and thermostat installation
      Thermostat check
      Replacement of hoses of system of cooling
      Removal and radiator installation
      Removal and installation of the fan of a radiator
      Removal and installation of the pump of a cooling liquid
   + Systems of ventilation, heating and air conditioning
+ Power supply systems, release and decrease in toxicity of the fulfilled gases
+ Systems of an electric equipment of the engine
+ Manual box of a gear change
+ Automatic transmission
+ Coupling, power shafts and differential
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment

Removal and radiator installation



  1. Merge cooling liquid, address to Section Replacement of a cooling liquid.
  2. Remove a forward bumper, address to Section Removal and installation of a forward bumper.
  1. The diesel engine of 1.9 l: Remove an air line before a cooler наддуваемого air.
  1. Disconnect air lines at the left and to the right of a radiator (an arrow on an accompanying illustration).
  1. Disunite a socket (1) relays of pressure of the conditioner.
  1. Disunite a socket (2) gauges of external temperature. (3) - bolts of fastening of the condenser.
  2. Take aside two electric wires.
  1. Engines 2.0, 3.0 l (ALT, AWA, ASN): Disconnect a coil of a hydraulic liquid of the hydraulic booster (3) and (4). (1) – the tip of the gauge of low pressure; (2) – the tip of the gauge of external temperature.

Do not open a contour of cooling of the conditioner. Danger of accident!

  1. Disconnect the condenser from a radiator (arrow).

For an exception of damages of the condenser, and also hoses/pipelines of a cooling liquid watch that wires and hoses were not braided, were not rumpled and were not bent.

  1. Incline cautiously the condenser downwards and put it.
  2. Engines 2.4, 3.0 l: remove the left top cover of the engine.
  1. Disconnect a hose from a radiator for what remove lock скобу at a connecting flange (the marksman on an accompanying illustration).
  1. Models with АТ: Disconnect below and above from a radiator pipelines of a liquid for АТ and close them.
  1. Disconnect a hose of a cooling liquid at the top of a radiator for what release lock скобу at a connecting flange (the marksman on an accompanying illustration).
  1. Release the top clips of a radiator and take out upward.
  1. Incline a radiator forward and take out from rubber support in gathering with a ring of the fan and the fan.



  1. Replace the worn out rubber support on holders of a radiator.
  2. Installation is carried out in sequence, return to removal.

If the radiator was replaced, it is necessary to replace all volume of a cooling liquid.