Assembly overview – steering column switch module
1 - Starter button -E378-
❏ → Chapter „Removing and installing starter button [E378]“
2 - Bracket for dash panel insert
3 - Shear bolt
❏ Qty. 2
4 - Steering column electronics control unit -J527-
❏ With driving mode selector, depending on equipment/version
❏ With wiper switch -E- With intermittent wiper switch -E22- With turn signal switch -E2- With headlight dipper and flasher switch -E4- With electromechanical parking brake button -E538-
❏ With airbag coil connector and return ring with slip ring -F138- With selector lever locked in position P switch -F319-
❏ With selector lever position display -Y6-
❏ Depending on equipment/version, with cruise control system (CCS) switch -E45- With cruise control system (CCS) SET button -E227- With multifunction display call-up button -E86- Wit heated steering wheel -Z36-
❏ → Rep. gr.94; Removing and installing steering column electronics control unit [J527]
5 - Control unit for electronic steering column lock -J764-
❏ → Running gear, axles, steering; Rep. gr.48; Steering column; Removing and installing control unit for electronic steering column lock [J764]
6 - Bolt
❏ 2.5 Nm
7 - Steering column
❏ → Running gear, axles, steering; Rep. gr.48; Steering column; Removing and installing steering column
Removing and installing steering column electronics control unit [J527]
Steering column electronics control unit -J527- is referred to hereafter as control unit.
Removing
– Move steering wheel to rearmost and lowest position. Use full range of steering column adjustment for this purpose.
– Remove lower steering column trim → General body repairs, interior; Rep. gr.68; Compartments/covers; Removing and installing lower steering column trim.
– Remove control unit with display unit for driver information system -J1254- → Rep. gr.90; Removing and installing control unit with display unit for driver information system [J1254].
NOTICE
Risk of damage to the electronic components due to electrostatic discharge.
– Discharge any static charge by briefly touching the door striker plate.
– Disconnect electrical connector -2-.
– Unscrew bolts -3-.
NOTICE
Risk of damage to the return ring.
– When removed, the return ring with slip ring must not be turned.
– Pull off control unit -1-.
Installing
Install in the reverse order of removal, observing the following:
– Before pushing on control unit -3-, ensure the following:
♦ “Arrows” -4- must align.
♦ Coil connector -2- must be visible in window -1-.
Tightening torques
ComponentSpecified torqueBolts for steering column electronics control unit1.3 Nm
Removing and installing immobiliser reader coil [D2]
Immobiliser reader coil -D2- is referred to hereafter as reader coil.
Removing
– Remove lower steering column trim → General body repairs, interior; Rep. gr.68; Compartments/covers; Removing and installing lower steering column trim.
– Release locking devices -2- in direction of -arrow A-.
– Pull out reader coil -1-.
Installing
Install in reverse order of removal.
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