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January 31, 2025 Service bulletin

Complaint • Hard 1-2 shift • Jerky shifting • Jolting when moving off Cause Insufficient data points for...

Mercedes-Benz technical service bulletin LI27.60-P-076554 for 2022-2024 Mercedes-Benz C300, 2023-2024 Mercedes-Benz AMG C43 and 2023-2024 Mercedes-Benz AMG SL43.

Bulletin number
LI27.60-P-076554
Component
Electrical system
Summary
Complaint • Hard 1-2 shift • Jerky shifting • Jolting when moving off Cause Insufficient data points for the adaptation limits algorithm Remedy Problem will be rectified with a new SW release Until the SW release is available, (No current ETA) please carry out the following: • Check the transmission oil level and correct if necessary • Rinse the valves a minimum of 3 times via XENTRY • Perform a stationary standstill adaptation, then collect EEPROM data If the problem persists, please perform driving adaptations of 4-5 at least ten to fifteen times: : • Level track (no incline/decline) • Slippery drive program • Display the torque in the instrument cluster: The torque must be between 100 and 250 Nm, preferably closer to the maximum torque • Constant engine torque • Engine speed under 2500 rpm • Do not shift via paddle • Collect a new EEPROM data after all adaptions are complete If the problem persists, please create a TIPS case. With both EEPROM files

Owners of these vehicles have filed 17 complaints in the electrical category.

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