SEAT Workshop Service and Repair Manuals > Leon Mk2 > Heating, ventilation, air conditioning system | Heating and air conditioning | Air conditioner | Air conditioning control and regulation components in the passenger compartment | Climatronic control unit J255 : operation, removing and fitting

Removing

–	Check the coding and the adaption of the Climatronic control unit -J255- using the function “replace control unit” of the guided fault finding (if the Climatronic control unit -J255-is to be replaced) → Vehicle diagnosis, testing and information system VAS 5051.

–	Switch ignition OFF.

On vehicles with no radio navigation system or radio with large control panel.

–	Remove the moulding underneath the Climatronic control unit -J255- in the centre element of the dashboard) → Bodywork, interior fitting work; Rep. Gr.68.

On vehicles with radio navigation system or radio with large control panel

–	Remove the radio or navigation system → Radio, telephone, navigation; Rep. Gr.91.

Continued for all vehicles

–	Loosen the Climatronic control unit -J255- securing bolts located in the lower part of the control panel.

–	Insert a hand underneath (or from above) into the centre console and release the Climatronic control unit -J255- from the centre console.

–	Release the Climatronic control unit -J255- connectors by lifting the insert tabs and removing them.

Note

t	The Climatronic control unit -J255- is secured to the centre console by two bolts.

t	Check, in case of a false measurement from the Temperature sensor - dashboard -G56-, the moulding of the Climatronic control unit -J255-, (ensure it is not covered).

t	When replacing the Climatronic control unit -J255- note the correct allocation (for example with or without regulator for thermal seats, etc ). → Parts catalogue

Fitting

Perform installation operations in reverse order of removal.

–	Consult the fault memory of the panel Climatronic control unit -J255- and erase the faults that appear → Vehicle diagnosis, testing and information system VAS 5051.

–	Carry out the basic settings, the coding, adaption and, if necessary, the actuator diagnosis of the Climatronic control unit -J255- → Vehicle diagnosis, testing and information system VAS 5051.