2014 MERCEDES-BENZ E-Class M274/OM651 (W212)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Air suspension failures (AIRMATIC models)
• Balance shaft and timing chain wear on some petrol engines
• Turbocharger issues in diesels

First checks

• Verify engine code to identify specific service needs
• Inspect air suspension components if equipped
• Check for recalls for electronic components

Vor dem Teiletausch

• 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 and trim availability varies significantly by region, especially diesel versions.
• 2014 was final model year before mid-cycle facelift introduces new front/rear styling and updated engines.