Audi A4, S4

since 2000 of release

Repair and car operation

Audi A4, S4
+ Introduction
+ Governing bodies and receptions of safe operation
+ Current leaving and service
+ Engine
- Systems of cooling, heating and air conditioner
   - Cooling system
      General information
      Antifreeze - means of protection from freezing
      Replacement of 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 cooling liquid
   + Systems of ventilation, heating and air conditioning
+ 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


Removal and radiator installation



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

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

    Disconnect the condenser from a radiator (arrow).

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

    Incline carefully the condenser down and put it. L engines 2.4, 3.0: remove the left top cover of the engine.
    Disconnect a hose from a radiator for what remove a lock bracket at a connecting flange (the shooter on an accompanying illustration).
    Models with AT: Disconnect below and above from a radiator liquid pipelines for AT and close them.
    Disconnect a hose of cooling liquid at the top of a radiator for what release a lock bracket at a connecting flange (the shooter on an accompanying illustration).
    Release the top clips of a radiator and take out upward.
    Incline a radiator forward and take out from rubber support assembled with a ring of the fan and the fan.



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

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