67 31 572 Removing And Installing/Replacing Drive Unit For Head Restraint Height Adjustment On Left Or Right Front Seat (Comfort Seat)
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WARNING:
Note airbag safety instructions! Incorrect handling may result in triggering of active head restraint and thereby cause injury. Refer to 72 00 ... SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS
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Necessary Preliminary Tasks:
- Remove both rear panels on front seat backrest. Refer to 52 17 205 REMOVING AND INSTALLING/REPLACING BOTH REAR PANELS ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) .
- Remove front head restraint. Refer to 52 17 390 REMOVING AND INSTALLING/REPLACING FRONT LEFT OR RIGHT HEAD RESTRAINT (COMFORT) .
- Disconnect and cover battery negative lead. Refer to 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
Pull backrest cover (1) in direction of arrow over metal lugs (2) and detach.
If necessary, detach backrest cover (1) on both sides from backrest frame.
NOTE:
For purposes of clarity, illustration shows backrest cover removed.
Unfasten plug connection (1) and disconnect.
Release screw connections (2).
Feed out AKS carrier (3) in direction of arrow and secure against falling out.
Cut through cable tie (1).
Disconnect plug connection (2).
Release screws (3).
Feed drive unit for head restraint height adjustment (4) in direction of arrow out of AKS carrier (5) and remove.
Replacement:
Initialize drive unit for head restraint height adjustment. Refer to 67 31 ... NOTES ON INITIALIZING ELECTRIC SEAT SERVODRIVES .