Every 20,000 miles (2009 and newer) / Every 26,000 miles (1998 - 2008)
Rotate tires
Adjust tire pressure
Check and top off all fluid levels
Inspect and clean air filter
Replace dust/pollen filter
Install windshield washer solvent
Check for manufacturer service campaigns
Lubricate door hinges, latches, and locks
Reset service system counter
Check battery coindition using "Midtronics MCR" tester
Replace engine oil and MBZ oil filter
Inspect seat belts, brake pads, brake discs, parking brake, engine cooling system, ball joints, steering mechanical components, Poly-V-belt, major components and line routing, throttle linkage, horn, headlamp and hazard flashers, turn signals, lighting, windshield washer system.