KNOWN FAULTS · Chrysler

Chrysler 300C (LX) 3.0 CRD (Mercedes OM642) common problems.

2005–2012 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Oil cooler and injector leaksOil leaks / injectors

Engine / equipment: OM642 3.0 V6 CDI/BlueTEC (280/300/320/350 CDI, ML, GL, R, Sprinter)
Period mentioned: 2005 onwards
Symptoms: Oil pooling in the engine's V, burning oil smell, drips under the engine; or a hiss or chirp next to an injector with an exhaust smell.
Possible cause described: The oil cooler seals (in the engine's V) degrade. Separately, injector washers leak combustion gas and carbon builds up around the injector.
Check for the garage: Visual inspection of the engine's V and the base of the injectors.
Cost cited in the source: Oil cooler seals: labour-heavy, approx. €800–1,800 (estimate)A rough figure from the original database, not an up-to-date quote.

Front suspension, rear axle and electronics on the Chrysler 300CKnown weak points

Engine / equipment: Chrysler 300C LX (V6 and V8 petrol, 3.0 CRD)
Period mentioned: 2005–2012
Symptoms: Knocks over bumps from the front control arm, lower ball joint and tie rod (part redesigned and back-ordered); a creaking rear axle; tyre-pressure sensor valves that corrode; electric mirrors not returning to position; rear seat belts locking; CAN-bus faults. On the 3.0 CRD: limp mode from the turbo boost regulator and the swirl-flap motor.
Possible cause described: Cases collected by Honest John. The valve corrosion comes from the galvanic pair between metal caps and the valve; the CAN faults, from boxes translating German and American codings (Mercedes base).
Check for the garage: Use plastic valve caps; check the front suspension; on diesels, read the turbo fault codes.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.