2007 — 2009
3.0L V6 (M272)
Petrol
Check for engine rattling at cold start | Note: The M272 engine is prone to balance shaft gear wear; listen for metallic grinding/rattling suggesting timing chain or sprocket issues.
Inspect intake manifold actuator | Note: Look for the check engine light or rough idle; the plastic tumble flap mechanism inside the intake manifold often breaks.
Test transmission shifting at low speeds | Note: Ensure the 7G-Tronic gearbox shifts smoothly; hesitation or 'flaring' indicates potential valve body or conductor plate failure.
Check for oil leaks at the rear of cylinder heads | Note: Inspect the camshaft magnets and cam plugs, which frequently leak oil onto the wiring harness.
Regular oil and filter change; inspect cabin filter and brake pad life.
Replace transmission fluid and filter; mandatory spark plug replacement for the V6 engine.
Major service interval: cooling system overhaul (thermostat/pump), belt tensioner replacement, and suspension bushing inspection.
Perform engine oil changes every 10,000km using MB-approved synthetic oil.
Replace transmission fluid every 60,000km to avoid conductor plate damage.
Monitor engine coolant levels closely to detect early radiator or thermostat housing leaks.
Inspect suspension control arm bushings and ball joints annually for NZ road condition wear.
Regularly clean out the drainage plenums near the windscreen to prevent water ingress into the cabin control modules.
Estimated repair costs if issues arise
Usually requires a full replacement of the unit.
Common electrical fault causing limp mode.
Essential for W204 steering feel and WOF compliance.
Worst-case scenario; requires engine removal.
Noticed something inaccurate or missing?Suggest an edit→
Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer