Electrical system
Mercedes-Benz technical service bulletin NCU - 2023070021 for 2019-2020 Mercedes-Benz AMG G63 and 2019-2020 Mercedes-Benz G63.
- Bulletin number
- NCU - 2023070021
- Component
- Electrical system
- Summary
- Mercedes-Benz AG (MBAG), the manufacturer of Mercedes-Benz vehicles, has determined that the software for the engine control unit in the subject vehicles may not meet current specifications. Any catalytic converter aging might not be immediately detected and therefore, the check engine Malfunction Indicator Lamp (MIL) may not illuminate as required. After a cold start in the "catalytic converter heating" operating mode, misfires might occur, and the check engine MIL would be illuminated. Consequently, these issues may not meet regulatory requirements for on-board diagnostics and/or exhaust gas emissions MBUSA will conduct a voluntary Emissions Recall Campaign in which an authorized Mercedes-Benz dealer will update the software in the affected vehicles.
Vehicles covered
- Mercedes-Benz AMG G63 2019-2020 20192020
- Mercedes-Benz G63 2019-2020 20192020
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