When to replace the Poly V-Belt on your MERCEDES-BENZ E-CLASS
Recommended replacement interval for the part category Serpentine belt : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ E-Class Saloon (W212) E 250 (212.052), MERCEDES-BENZ E-Class Saloon (W212) E 350 (212.056), MERCEDES-BENZ E-Class Saloon (W212) E 500 4-matic (212.090), MERCEDES-BENZ E-Class Saloon (W212) E 350 4-matic (212.087), MERCEDES-BENZ E-Class Saloon (W212) E 350 CGI (212.057), MERCEDES-BENZ E-Class Saloon (W212) E 300 (212.054) 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

All the parts you need to replace – Poly V-Belt for E-Class Saloon (W212) and other MERCEDES-BENZ models
How to change Serpentine belt on Mercedes W212 E 200 CDI / BlueTEC 2.2 (212.005, 212.006) – step-by-step instructions for straightforward car repair
Serpentine belt
How to change V-Ribbed Belt Set on Mercedes W212 E 200 CDI / BlueTEC 2.2 (212.005, 212.006) – step-by-step instructions for straightforward car repair
V-Ribbed Belt Set
How to change Water Pump + V-Ribbed Belt Kit on Mercedes W212 E 200 CDI / BlueTEC 2.2 (212.005, 212.006) – step-by-step instructions for straightforward car repair
Water Pump + V-Ribbed Belt Kit
Tools
Replacement: serpentine belt – MERCEDES-BENZ E-CLASS (W212). Tools you might need:
Combination spanner #16
Fender cover
Replacement: serpentine belt – MERCEDES-BENZ E-CLASS (W212). 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 W212 2009 - free PDF and video manuals
    Remove the engine cover.
    AUTODOC recommends:
    Replacement: serpentine belt – MERCEDES-BENZ E-CLASS (W212). Do not use excessive force when removing the part as this may damage it.
  2. Step 4
    How to replace MERCEDES-BENZ E-Class Saloon (W212) E 200 CDI / BlueTEC 2.2 (212.005, 212.006) 2010 Poly V-Belt - step-by-step manuals and video guides
    Remove the air intake hoses.
  3. Step 5
    Mercedes W212 E 220 CDI / BlueTEC 2.2 (212.001, 212.002) 2011 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 E-Class Saloon (W212) E 350 CDI 3.0 (212.025) 2012 by yourself
    Remove the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ E-CLASS (W212). 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 E-CLASS E 220 BlueTEC 2.2 (212.001) 2013 Poly V-Belt - online easy-to-follow instructions
    Install the V-ribbed belt.
    Replacement: serpentine belt – MERCEDES-BENZ E-CLASS (W212). Tip from AUTODOC:
    Make sure that the V-ribbed belt fits all pulleys snugly.
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DIY MERCEDES-BENZ E-Class Saloon (W212) Poly V-Belt replacement - online guide
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