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April 8, 2026 Service bulletin

After opening the driver's door, the seat can no longer be moved using the Memory button

Mercedes-Benz technical service bulletin LI91.29-P-079178 for 2023-2026 Mercedes-Benz GLC 300, 2024 Mercedes-Benz AMG Glc43 and 2023-2026 Mercedes-Benz GLC 300 4matic and others.

Bulletin number
LI91.29-P-079178
Component
Seats
Summary
Complaint After opening the driver's door, the seat can no longer be moved using the Memory button. Adjustment via the seat adjustment switch is still possible. Example: Driver 1 parks the vehicle in the evening and the seat position is right to the front with Memory button 1. Driver 2 opens the driver's door and presses Memory button 2, as seat position 1 is too far forward to get in. The seat does not move to the saved rear seat position 2. Once the ignition is turned "on", the function is available again. Cause The cause is an error in the HU7 software. Remedy Please perform a software update in the HU7 control unit and then carry out a factory reset of the HU7.

Owners of these vehicles have filed 2 complaints in the seats category.

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