Seat Leon >> Cleaning evaporator

Special tools and workshop equipment required

  • Ultrasonic cleaning unit for the air conditioner circuit - VAS 6189B-
  • Cleaning liquid - VAS 6189/1-
  • Suction nozzle - VAS 6288-
  • Commercially available dust extractor

Operation process

  • By switching from fresh air to air recirculation mode, check whether the air conditioning unit evaporator is really the source of the odour .
  • Check and if necessary clean the plenum chamber water drain.
  • Remove dust and pollen filter.
  • Clean the mounting slot for the dust and pollen filter.
  • Seal the opening for the dust and pollen filter at the air conditioning unit.
  • Start the engine.
  • Close the windows, sun roof and rear lid.
  • Open all dash panel vents.

Vehicles with manually controlled air conditioner:

  • Make the following settings on the operating unit, air conditioning system control unit - J301- :
    • Air conditioner compressor is switched off: The lamp in the AC button -5- does not light up.
    • Set the rotary temperature control -1- to the "Cold" stop.
    • Press the recirculated air -2- button: the lamp of the button lights up.
    • Set the rotary fresh air blower control -3- to speed "1".
    • Set the rotary air distribution control -4- to "Dash panel vents".

Air conditioning system

Vehicles with automatically controlled air conditioner:

  • Make the following settings on the operating unit, Climatronic control unit - J255- :
    • Air conditioner compressor is switched off: the lamp in the AC button -11- does not light up.
    • Turn the temperature preselection with control switches -1, 7- to "cold": Display "LO" for driver's and front passenger's side in display -3- of the -J255- .
    • Press the buttons -5, 6- for "dash panel vents".
    • Switch the controller -9- for the fresh air blower to the lowest level: -V2- runs at the lowest speed.

All vehicles (continued):

  • Shake the bottle with the cleaning fluid - VAS 6189/1- and insert into the ultrasonic cleaning unit for the air conditioner circuit - VAS 6189B-

Air conditioning system

Note For handling of ultrasonic air conditioner cleaning unit, refer to - Operating instructions of -VAS 6189B- .

  • Place the ultrasonic cleaning unit for the air conditioning circuit - VAS 6189B- in the footwell vent on the front passenger side.
  • Start up the ultrasonic air conditioner cleaning unit - VAS 6189B- (see operating instructions of the unit) and position the outlet hose such that the vapour emerging is drawn in by the fresh air blower - V2- via the recirculated-air opening of the air conditioner unit (in the passenger's footwell behind the glove compartment).
  • Close the vehicle doors.

Note Cleaning takes 15 to 20 minutes. If steam no longer escapes from the discharge hose of the ultrasonic cleaning unit for the air conditioner circuit - VAS 6189B- , the process is completed.

  • Switch off the ultrasonic air conditioner cleaning unit - VAS 6189B- .
  • Open the vehicle doors and vent the vehicle for at least 10 minutes.
  • Remove the ultrasonic cleaning unit for the air conditioner circuit - VAS 6189B- from inside the vehicle and clean it.
  • Turn the ignition off.
  • Install dust and pollen filter.
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    See also:

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