2012 MERCEDES-BENZ SL-Class M278 DE 46 LA/M157 DE 55 AL (R231)
R231 / 2-door Convertible / Global (noting regional engine variations, e.g., Europe, North America, Asia)
M278 DE 46 LAM157 DE 55 ALRegistro exacto de año/versiónSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Air suspension wear
- Electronic system glitches in COMAND interface
First checks
- Inspect air suspension for leaks
- Verify software updates for infotainment
Antes de cambiar piezas
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- Engine options varied by market and production month; AMG M157 typically in SL 63 AMG model.
- 2012 marked the SL-Class debut of the R231 generation replacing the R230.