IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
Lift back insulating mat.
Disconnect plug connection (1).
Unlock catch (2) and remove trailer module (3) from device carrier (4).
Fig. 235: Identifying Plug Connection, Catch, Trailer Module And Device
Carrier
Replacement:
Carry out programming/coding.
REMOVING AND INSTALLING (REPLACING) CONTROL UNIT FOR CAR ACCESS SYSTEM
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
NOTE: The comfort access system is a radio-based system and can be interfered with by radio waves from other systems (e.g. mobile phone).
Necessary preliminary tasks:
Disconnect plug connection (1).
Release catches (2) and pull out control unit for Car Access System (3) in downward direction.
Fig. 236: Identifying Plug Connection, Catches And Car Access System
Replacement:
Carry out programming/coding.
Version with independent heating:
Initialize Telestart hand transmitter.
REMOVING AND INSTALLING/REPLACING CONTROL UNIT/MODULE FOR LEFT OR RIGHT SEAT ADJUSTMENT
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
NOTE: To facilitate installation/removal of control unit, move seat upwards fully.
Disconnect all plug connections on control unit for seat adjustment (1).
Fig. 237: Identifying Plug Connections On Control Unit For Seat Adjustment
Unlock retaining tabs (1) towards front and remove control unit for seat adjustment (2) in direction of arrow.
Installation:
Make sure control unit for seat adjustment (2) is correctly seated in mounting.
Fig. 238: Removing Control Unit For Seat Adjustment
Replacement:
Carry out programming/coding.
REMOVING AND INSTALLING/REPLACING JUNCTION BOX ELECTRONICS
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
Release screws (1).
Remove air duct (2).
Fig. 239: Identifying Air Duct
Release screw (1).
Slacken wiring harness in cable holder (2).
Fig. 240: Identifying Cable Holder
Release screw (1).
Fig. 241: Identifying Screw
Lever holders (1) at bulkhead out of fuse box (2) in direction of arrow.
Lower fuse box (2).
Fig. 242: Removing Holders
Disconnect plug connection (1).
Fig. 243: Identifying Plug Connection
Release screws (1).
Pull junction box electronics (2) out of fuse box.
Installation:
Make sure junction box electronics (2) is correctly seated in fuse box plug connection.
Fig. 244: Pulling Junction Box Electronics Out Of Fuse Box
Replacement:
Carry out programming/coding.
REMOVING AND INSTALLING/REPLACING FOOTWELL MODULE
IMPORTANT: Read and comply with notes on protection against electrostatic damage (ESD protection).
Necessary preliminary tasks:
Fold back carpet (1) in area of A-pillar a little.
Disconnect plug connection (2).
Release plastic nuts (3).
Pull footwell module (4) forwards a little.
Disconnect plug connection (5).
Fig. 245: Identifying Plug Connection And Footwell Module
Replacement:
Carry out programming/coding.