Climatronic Control Module (J255),

Climatronic Control Module (J255),

Removing

- Check coding and adaptation of the Climatronic control module via the "Replace control module" function of Guided Fault Finding (in the event that the Climatronic control module is to be replaced), using the Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding.

- Switch off ignition.

• The removal of either Climatronic control module is identical for both Comfort and Basic versions.

• The Climatronic control module - A - is held in the center console via retaining clips - B - (on lower side) and - C - (on upper side).






• Clips - C - are installed on upper side (form-fitting clip with an angle of approximately 65°), clips - B - on lower side (force-fitting clip with an angle of approximately 120°). Clips - C - must be disengaged in order to remove the Climatronic control module (for example, using a small screwdriver after removing CD Changer (R41) ).

- Remove center instrument panel vent - A -.






• Center instrument panel vent - A - is secured in center console via clips - D - and - E -. Insert for example, hook (3438) - B - into holes - C - of instrument panel vent and pull instrument panel vent out of center console.

- Remove CD Changer (R41) - F -.

• Depending on equipment, a storage compartment or another component may be installed, removing.

- Using two small screwdrivers - A -, disengage catches of both top clips - C - (above slots in instrument panel center section - D -), then grasp under the Climatronic control module - B - and carefully pull it out of center console.






- Disengage catches of connector - D - by pressing retaining tabs - F - and disconnect this connector.






- Wait 30 seconds (to protect electronics in the Climatronic control module).

- Disengage connector - E - and disconnect it.

- Disengage catches of connectors - A - to - C - by pressing retaining tabs - F - and disconnect them.

• This illustration shows connectors on a Climatronic control module Comfort version with optional equipment heated seats. On the Basic version, connectors - A - and - C - are not present, on vehicles without heated seats as optional equipment, connector - E - is not present.

Installing

- Check clips - B - and - C - on the Climatronic control module.






• Only install a Climatronic control module - A - on which clips - C - (form-fitting clips with an angle of approximately 65°) are installed on upper side and clips - B - on lower side, otherwise the climatronic control module can only be removed again when the instrument panel center section has been removed (clips - C - cannot be released on the lower side).

Install the Climatronic control module (install in reverse order).

- Perform basic setting, coding, adaptation (and output Diagnostic Test Mode (DTM) if necessary) on the A/C system using the Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding".

- Check DTC memory of the Climatronic control module (and of Rear A/C Display Control Head (E265) , if present) and erase DTCs displayed if necessary using the Vehicle Diagnosis, Testing and Information System VAS 5051 in "Guided Fault Finding".