2009 MERCEDES-BENZ SLK-Class M271.946/M272.920 (R171)
R171 / Convertible (2-door roadster) / Global - minor engine variations by region
M271.946M272.920M156Fiche exacte année/versionSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Electronics glitches in folding hardtop system
- Balance shaft and timing chain wear issues in some engines
First checks
- Check convertible top operation and hydraulics
- Inspect timing chain condition on 4-cylinder engines
Avant de remplacer des pièces
- 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
- Facelifted R171 model introduced in 2008/2009, slight variations in engine tuning by market.
- V8 M156 engine exclusive to AMG models with unique maintenance requirements.