Checking the Turn Signal Lamp Switch

Checking the turn signal lamp switch

Checking components
Activate the turn signal lamp switch. Read off the status.

Hint: If the turn signal lamp switch status is OK, the fault is not in the steering wheel module (SWM).





Was the status of the turn signal lamp switch correct?

Yes - No Fault Found

No - Replacing the component

-------------------------------------------------

Replacing the component
Replace the turn signal lamp switch

Other information:
- To replace the turn signal lamp switch, see Turn signal switch, replacing, M58, M66, M66 AWD, AW50/51 AWD, AW55-50/51SN, M56 Turn Signal Switch, Replacing.

Select "Continue" when the fault has been remedied.

Continue - Checking components

-------------------------------------------------

Checking components
Activate the turn signal lamp switch. Read off the status.

Hint: If the turn signal lamp switch status is OK, the fault is in the turn signal lamp switch.





Was the status of the turn signal lamp switch correct?

Yes - Fault Found

No - Replacing the component

-------------------------------------------------

Replacing the component
Try replacing the steering wheel module (SWM).

Caution! A new control module is delivered without software. The control module must be programmed in order to function after replacement.

Other information:
- To replace and program the steering wheel module (SWM), see Steering wheel module (SWM), replacing Service and Repair.





Was a fault detected?

Yes - Fault Found

No - No Fault Found

-------------------------------------------------