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RecallGazette

Vehicle problems, recalls & safety intelligence

Mercedes-Benz AMG CLS53 2020–2023 — technical service bulletin

Bulletin 2024090007 · NHTSA communication 11011564 · issued Dec 2, 2024

Technical service bulletin
communication type
Electrical System
component
2020–2023
model years
54
vehicle entries

Official summary

Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain MY 2020-2023 CLS (257 platform), E-Class (213 and 238 platform), GLE (167 platform), and AMG GT 4-Door (290 platform) vehicles, the engine control unit software does not correspond to current production specifications. As a consequence, the functionality of the post-catalyst oxygen sensor may be impaired due to increased thermal loading . MBUSA will conduct a service campaign. An authorized Mercedes-Benz dealer will update the engine control unit software.

Vehicles covered

What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.