2017 MERCEDES-BENZ CLS-Class M276 DE 30 LA/M264 E15 DEH LA (C257)
C257 / 4-door coupe / Global (Europe, USA, China, others)
M276 DE 30 LAM264 E15 DEH LAOM654M177 DE 40 ALRegistro exacto de año/versiónGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Air suspension leaks (in markets with AIRMATIC)
- Injector issues in diesel OM654 in early production models
- Timing chain tensioner wear (rare)
First checks
- Check for air suspension operation if equipped
- Verify maintenance records for oil and filter changes
- Inspect turbocharger operation in 4-cylinder and V6 engines
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
- Market-specific engine availability varies: Diesel OM654 primarily in Europe and select countries.
- AMG variants (e.g. CLS 53 and CLS 63) have distinct engine codes and higher outputs.