seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Additional heating element Z35 with Additional air heating control unit J604 removing and fitting|Fitting > < Additional heating element Z35 with Additional air heating control unit J604 removing and fitting

Leon Mk2

Removing
Removing
–  Remove the driver side lower lining → Bodywork, interior fitting work; Rep. Gr.68.
–  Remove the left side vent from the foot well area (driver side) → Chapter.
–  Stop the voltage supply to the Additional heating element -Z35- by removing the corresponding fuse (currently 100 A), the fuse location is shown in the corresponding circuit diagram → Current flow diagrams, Electrical fault finding and Fitting locations.
   
–  Remove the 4 bolts -A- and remove the cover -B-.
  Note
t  There are different versions of the cover -B- (for vehicles with or without additional electric heating) → Parts catalogue.
  A87-0685
t  If the lever to the left hand side temperature vent is in a position that makes it impossible to reach the upper bolt -A-, turn on the ignition and select a different temperature regulation on the Climatronic control unit -J255- to the left.
  A87-0685
–  Detach the connector -A- from the heating element -D-.
–  Check, for example with a voltage tester, between the pins -C- (positive) and -B- (negative); there must be no voltage (danger of short circuit).
–  Mark the two cable connections to the Additional heating element -Z35- (there is a risk of confusion).
  Note
  A87-0708
If the connections have been mixed up, the The additional air heating control unit -J604- cannot regulate the current and the Additional heating element -Z35- continues to receive a current supply (with no regulation, at the highest heat setting).
–  Release both cable connections -B- and -C- to the Additional heating element -Z35- and isolate the connections (short circuit risk).
  A87-0708
–  Extract the Additional heating element -Z35--A- (with the Additional air heating control unit -J604--B-;this cannot be tested or separated) from the climate control (heating).
  A87-0709

Additional heating element Z35 with Additional air heating control unit J604 removing and fitting|Fitting > < Additional heating element Z35 with Additional air heating control unit J604 removing and fitting