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March 2, 2026 Service bulletin

CEL light on with no drivability concerns

Mercedes-Benz technical service bulletin LI54.21-P-080326 for 2020-2024 Mercedes-Benz GLE 350, 2020-2024 Mercedes-Benz GLE 450 and 2021-2022, 2024-2026 Mercedes-Benz Gle 350 4matic and others.

Bulletin number
LI54.21-P-080326
Component
Engine
Summary
Complaint CEL light on with no drivability concerns. Cause Signal timing error. Remedy This fault code does not cause a drivability concern and will clear itself within 2-3 key cycles. The vehicle can be released back to the customer. There is software in development for this concern.

Owners of these vehicles have filed 125 complaints in the engine category.

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