Mercedes-Benz C-Class 2006 Maintenance Booklet page 69

Once during first service at 10,000 miles or 1 year
Parking brake - Adjust cable slack (C-Class, CLK-Class, SL-Class)
At every 40,000
Rear axle differential - Change oil (SL 65 AMG only)
At every 40,000 miles or 4 years
Replace engine air cleaner filter element (Engine 113) (CL-Class, S-Class, SL-Class)
Replace poly-V-belt tensioning device (Engine 275) (CL-Class, S-Class, SL-Class)
Replace compressor poly-V-belt (Engine 113) (CL-Class, S-Class, SL-Class)
At every 50,000 miles or 4 years
Check condition of driveshaft flex discs
At every 60,000 miles or 4 years
Replace engine air cleaner filter element (Engine 113) (C-Class, CLK-Class)
Replace engine air cleaner filter element (Engine 275)
At every 60,000 miles or 5 years
Replace fuel filter
Replace activated charcoal filter (if equipped)
Additional Work to be Performed together with the Respective Service
Maintenance Booklet
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