2005 MERCEDES-BENZ S-Class M273 E55/M273 E63 (W221)
W221 / Sedan / Global (primarily Europe, North America, and selected international markets)
M273 E55M273 E63OM642M275OM628Registro exacto de año/versiónGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Air suspension leaks
- Airmatic compressor failure
- Electrical system glitches
- Balance shaft chain wear in some V8 variants
First checks
- Inspect air suspension components
- Check for oil leaks around valve covers
- Verify operation of electronic modules
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 variations include presence of diesel engines primarily in Europe and select regions only.
- 7-speed 7G-Tronic automatic transmission introduction varied by market and exact production month in 2005.