When to replace the Poly V-Belt on your MERCEDES-BENZ C-CLASS
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class T-modell (S203) C 320 (203.264), MERCEDES-BENZ C-Class T-modell (S203) C 240 (203.261), MERCEDES-BENZ C-Class T-modell (S203) C 240 4-matic (203.281), MERCEDES-BENZ C-Class T-modell (S203) C 320 4-matic (203.284) View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Tools
Replacement: serpentine belt – MERCEDES-BENZ C-CLASS T-Model (S203). Tools you might need:
Combination spanner #16
Fender cover
Replacement: serpentine belt – MERCEDES-BENZ C-CLASS T-Model (S203). AUTODOC experts recommend:
  • All work should be done with the engine stopped.
Carry out replacement in the following order:
  1. Step 1
    Open the bonnet.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    How to change Poly V-Belt on Mercedes S203 2001 - free PDF and video manuals
    Remove the engine cover.
    AUTODOC recommends:
    Replacement: serpentine belt – MERCEDES-BENZ C-CLASS T-Model (S203). Do not use excessive force when removing the part as this may damage it.
  2. Step 4
    How to replace MERCEDES-BENZ C-Class T-modell (S203) C 220 CDI 2.2 (203.208) 2002 Poly V-Belt - step-by-step manuals and video guides
    Remove the air intake hoses.
  3. Step 5
    Mercedes S203 C 180 1.8 Kompressor (203.246) 2003 Poly V-Belt replacement: free workshop manuals
    Pull aside the V-ribbed belt tensioner pulley. Use a combination spanner #16.
  4. Step 6
    Changing Poly V-Belt on MERCEDES-BENZ C-Class T-modell (S203) C 200 CDI 2.2 (203.207) 2004 by yourself
    Remove the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ C-CLASS T-Model (S203). AUTODOC recommends:
    Check the condition of the tensioner pulley and idler pulley. Replace them if necessary.
  5. Step 7
    Return the tensioner pulley to its initial position.
    Step 8
    How to remove MERCEDES-BENZ C-CLASS C 270 CDI 2.7 (203.216) 2005 Poly V-Belt - online easy-to-follow instructions
    Install the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ C-CLASS T-Model (S203). Tip from AUTODOC:
    Make sure that the V-ribbed belt fits all pulleys snugly.
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DIY MERCEDES-BENZ C-Class T-modell (S203) Poly V-Belt replacement - online guide
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