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July 20, 2022 Service bulletin

Complaint

Mercedes-Benz technical service bulletin LI54.10-P-071832 for 2019-2021 Mercedes-Benz CLA250, 2020-2022 Mercedes-Benz GLA 250 and 2020-2022 Mercedes-Benz GLB 250 and others.

Bulletin number
LI54.10-P-071832
Component
Engine and engine cooling
Summary
Complaint - Vehicle cannot be unlocked/ vehicle does not start - Display message in instrument cluster "Battery - Start Engine - see Operator's Manual Cause Root cause is a bus keepawake in either the Headlight control unit or in one of the following: ALC, IC, SAM, PTCU, ESP. Additionally, the quick test will show U116000 "A bus keepawake control unit has been detected" in the electronic ignition switch (EZS) control unit for this root cause. Remedy Eliminate bus keep awake issue flash new software where available:

Owners of these vehicles have filed 55 complaints in the engine category.

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