← All platforms
W209 Coupe · Cabrio
Mercedes-Benz CLK · Coupe · Cabrio · 2002–2009
CLK63 AMG Black Series tops this generation.
Production run
2002–2009
Engines covered
4
Avg. part price
—
19902026
Interactive systems map
Inspect the W209
Tap a hotspot to inspect that system
Systems map
Where it goes wrong
Each numbered hotspot counts the documented failure points in that area. Select one to see the specifics for this chassis and engine.
Failure points by system
Engine2
Intake2
Transmission1
Documented issues per engine
4M271
4M112
4M272
4M113
Known weak points
What breaks on the W209
Timing chain and tensioner (well-known)Diagnose →Balance shaft gear wear (2003–2008)Diagnose →Head bolt / gasket leaksDiagnose →Intake manifold flapDiagnose →Balance shaft gear wear (2004–2008)Diagnose →Intake manifold swirl flap failureDiagnose →Camshaft adjuster magnetsDiagnose →Motor mountsDiagnose →
Guides & playbooks
W209 playbooks
Maintenance scheduleGive me a mileage-based maintenance schedule for a Mercedes-Benz CLK W209, including the items the factory schedule skips.Buyer's inspectionI'm inspecting a used Mercedes-Benz CLK W209. What exactly should I check, test drive and look for underneath?Build planPlan a staged performance build for a Mercedes-Benz CLK W209 that stays reliable as a daily driver.Fault code lookupI have a fault code on my Mercedes-Benz CLK W209. Walk me through what it means and how to confirm the cause.
Fits your W209
Parts & tools
Loading catalog…