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March 23, 2023 Service bulletin

Engine and engine cooling

Mercedes-Benz technical service bulletin NCU-2022100005 for 2019-2021 Mercedes-Benz GLS 450, 2020-2022 Mercedes-Benz GLE 450 and 2022 Mercedes-Benz EQS 450 and others.

Bulletin number
NCU-2022100005
Component
Engine and engine cooling
Summary
Mercedes-Benz AG (“MBAG”), the manufacturer of Mercedes-Benz vehicles, has determined that the affected vehicles may not meet current On Board Diagnostics (“OBD”) emissions specifications. Under certain conditions, the permanent OBD fault code memory of the 48V ISG control unit may not activate. What We’re Doing MBUSA will conduct a voluntary Emission Recall Campaign in which an authorized Mercedes- Benz dealer will update the software in the affected vehicles.

Owners of these vehicles have filed 70 complaints in the engine category.

Vehicles covered

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