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July 23, 2026 Service bulletin

"Key Not Detected" message appears on the IC while driving even though the key is in the car and no doors...

Mercedes-Benz technical service bulletin LI80.35-P-080195 for 2024 Mercedes-Benz CLE 300, 2024-2025 Mercedes-Benz Cle 300 4matic and 2025 Mercedes-Benz AMG Cle53 4matic+ and others.

Bulletin number
LI80.35-P-080195
Component
Electrical system
Summary
Complaint "Key Not Detected" message appears on the IC while driving even though the key is in the car and no doors have been opened. Cause Possible SW Remedy Confirm that the message is not due to the driver's door being opened and that the door latch is reading properly. For vehicles that do not have the above issues, SW is released for option code 805 ONLY. For all other vehicles, the SW is still in development. Current workaround is to ensure that the key is left on the antenna in the storage compartment.

Owners of these vehicles have filed 4 complaints in the electrical category.

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