When to replace the Spark Plug on your MERCEDES-BENZ C-CLASS
Recommended replacement interval for the part category Spark plug : 18 month / 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W203) C 180 (203.035) View more

The steps may slightly vary depending on the car design.

How to change spark plug on MERCEDES-BENZ С W203 [TUTORIAL AUTODOC]

video
All the parts you need to replace – Spark Plug for C-Class Saloon (W203) and other MERCEDES-BENZ models
Tools
Replacement: spark plugs – Mercedes W203. Tools you might need:
Electronic spray
HEX bit No.HW5.
Drive socket # E8
Spark plug socket # 16
Ratchet wrench
Torque wrench
High-temperature anti-seize lubricant
Fender cover
Replacement: spark plugs – Mercedes W203. Professionals recommend:
  • The replacement procedure is the same for all spark plugs.
  • Warning! Shut down the engine before starting any work – Mercedes W203.
Carry out replacement in the following order:
  1. Step 1
    How to change Spark Plug on Mercedes W203 2000 - free PDF and video manuals
    Open the hood.
  2. Step 2
    How to replace MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.006, 203.008) 2001 Spark Plug - step-by-step manuals and video guides
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
  3. Step 3
    Mercedes W203 C 180 1.8 Kompressor (203.046) 2002 Spark Plug replacement: free workshop manuals
    Undo the engine cover screws (3 pieces). Use HEX No.HW5.
  4. Step 4
    Changing Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.004) 2003 by yourself
    Remove the engine cover.
  5. Step 5
    How to remove MERCEDES-BENZ C-CLASS C 200 CDI 2.2 (203.007) 2004 Spark Plug - online easy-to-follow instructions
    Unscrew the fasteners of the ignition coils. Use a drive socket #E8.
  6. Step 6
    How to replace Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) 2005: download PDF manuals and video instructions
    Take out the ignition coils from the spark plug wells.
    Replacement: spark plugs – Mercedes W203. Tip from AUTODOC:
    Remember the sequence of steps for ignition coil demounting.
  7. Step 7
    How hard is it to do yourself: Spark Plug replacement on Mercedes W203 C 200 2.0 Kompressor (203.045) 2006 - download illustrated guide
    Clean dirt, dust and debris from inside the spark plug wells.
  8. Step 8
    Need to know how to renew Spark Plug on MERCEDES-BENZ C-CLASS 2007? This free workshop manual will help you to do it yourself
    Unscrew the spark plugs. Use the spark plug socket #16. Use a ratchet wrench.
  9. Step 9
    Changing of Spark Plug on Mercedes W203 2000 won't be an issue if you follow this illustrated step-by-step guide
    Take out the spark plugs.
  10. Step 10
    MERCEDES-BENZ C-CLASS C 200 1.8 Kompressor (203.042) Spark Plug replacement: online guides and video tutorials
    Apply a thin layer of a special high temperature anti-seize lubricant to the threads of the new spark plugs. Treat the surface of the terminals of the new spark plugs. Use electronic spray.
  11. Step 11
    Replacing Spark Plug on Mercedes W203 2002 C 220 CDI (203.006, 203.008) by yourself
    Install the new spark plugs into their mounting seats.
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DIY MERCEDES-BENZ C-Class Saloon (W203) Spark Plug replacement - online guide
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