Ignition Lock: Service and Repair

Steering Column Switch Module and Electronic Ignition Lock Overview

• The steering column switch module consists of coil connector with slip ring, steering angle sensor (G85) , steering column switch (turn signal indicator switch, wiper switch, cruise control switch) and steering column electronic systems control module.

• Fault finding is done in Guided Fault Finding with the Vehicle Diagnostic Tester.






1 Screw

• 0.5 Nm

2 Transport Protection

3 Steering Column Electronics Control Module (J527)

• With airbag spiral spring/return spring with slip ring (F138) , steering angle sensor

• Removing and installing, refer to => [ Steering Column Electronic Systems Control Module ] Steering Column Electronic Systems Control Module


Risk of damaging coil connector.

• Coil connector with slip ring is not to be turned following removal.

• Connector assignment of Steering Column Electronic Systems Control Module, refer to=> [ Steering Column Electronics Control Module J527 Connector Assignment ] [1][2]Diagrams

4 Mount

• With turn signal switch (E2) , windshield wiper intermittent mode switch (E22)

• On vehicles with cruise control with cruise control switch (E45)

• Removing and installing, refer to => [ Turn Signal Switch, Cruise Control Switch and Windshield Wiper and Washer Intermittent Mode Switch ] Turn Signal Switch, Cruise Control Switch and Windshield Wiper and Washer Intermittent Switch

5 Clamping Ring

6 Screw

• 4 Nm

7 Steering Column

8 Access/Start Authorization Switch (E415)

• Removing and installing, refer to => [ Access/Start Authorization Switch ] Access/Start Authorization Switch

9 Divider

• For access/start authorization switch

• Removing and installing, refer to => [ Access/Start Authorization Switch ] Access/Start Authorization Switch

10 Ignition Key

Access/Start Authorization Switch Tightening Specification






- Tighten the bolt - 2 - on the access/start authorization switch - 1 - to 3 Nm.