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February 9, 2026 Service bulletin

"Do Not Drive Over 50MPH" Suspension Message in Instrument Cluster Possible DTC's in Quicktest: C128763 in...

Mercedes-Benz technical service bulletin LI32.34-P-080258 for 2022-2023, 2025 Mercedes-Benz AMG SL63, 2025-2026 Mercedes-Benz AMG GT43 and 2022-2025 Mercedes-Benz AMG SL55 and others.

Bulletin number
LI32.34-P-080258
Component
Suspension
Summary
Complaint "Do Not Drive Over 50MPH" Suspension Message in Instrument Cluster Possible DTC's in Quicktest: C128763 in N51/1 - "The pressure control system has a malfunction. There is an implausible signal." C128864 in N51/1 - "The level control system has a malfunction. The duration of the actuation was exceeded: overload protection is active." Note: Only applies to vehicles up to production date October 15, 2025 Cause Coding in the suspension control unit N51/1 (EHRC232). Remedy SCN code the suspension control unit N51/1 (EHRC232). Verify no instrument cluster light illuminates when actuating the front axle lifter to the raised and lowered position.

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