Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.045), MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.745), MERCEDES-BENZ C-Class T-modell (S203) C 200 Kompressor (203.245)

The steps may slightly vary depending on the car design.

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

Replacement: spark plugs – Mercedes W203. Tools you might need:
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
All the parts you need to replace – Spark Plug for C-Class Saloon (W203) and other MERCEDES-BENZ models
How to change Spark Plug on Mercedes W203 C 220 CDI 2.2 (203.006) – step-by-step instructions for straightforward car repair
Spark Plug
How to change Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.045) – tips for proper car maintenance
MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.045)
Simple DIY car repair steps – Replacing Spark Plug on MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.745)
MERCEDES-BENZ C-Class Coupe (CL203) C 200 Kompressor (203.745)
Easy tricks to help you to replace Spark Plug on MERCEDES-BENZ C-Class T-modell (S203) C 200 Kompressor (203.245)
MERCEDES-BENZ C-Class T-modell (S203) C 200 Kompressor (203.245)
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. How to change Spark Plug on Mercedes W203 2000 - free PDF and video manuals
    Step 1
    Open the hood.
  2. How to replace MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI 2.2 (203.006) 2001 Spark Plug - step-by-step manuals and video guides
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
  3. Mercedes W203 C 180 1.8 Kompressor (203.046) 2002 Spark Plug replacement: free workshop manuals
    Step 3
    Undo the engine cover screws (3 pieces).Use HEX No.HW5.
  4. Changing Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI 2.2 (203.004) 2003 by yourself
    Step 4
    Remove the engine cover.
  5. How to remove MERCEDES-BENZ C-CLASS C 200 CDI 2.2 (203.007) 2004 Spark Plug - online easy-to-follow instructions
    Step 5
    Unscrew the fasteners of the ignition coils.Use a drive socket #E8.
  6. How to replace Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) 2005: download PDF manuals and video instructions
    Step 6
    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. How hard is it to do yourself: Spark Plug replacement on Mercedes W203 C 200 2.0 Kompressor (203.045) 2006 - download illustrated guide
    Step 7
    Clean dirt, dust and debris from inside the spark plug wells.
  8. Need to know how to renew Spark Plug on MERCEDES-BENZ C-CLASS ? This free workshop manual will help you to do it yourself
    Step 8
    Unscrew the spark plugs. Use the spark plug socket #16.Use a ratchet wrench.
  9. Changing of Spark Plug on Mercedes W203 2000 won't be an issue if you follow this illustrated step-by-step guide
    Step 9
    Take out the spark plugs.
  10. MERCEDES-BENZ C-CLASS C 200 1.8 Kompressor (203.042) Spark Plug replacement: online guides and video tutorials
    Step 10
    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. Replacing Spark Plug on Mercedes W203 2002 C 220 CDI 2.2 (203.006) by yourself
    Step 11
    Install the new spark plugs into their mounting seats.
  12. C-Class Saloon (W203) C 200 CDI 2.2 (203.007) 2003 Spark Plug DIY replacement workshop manual
    Step 12
    Screw new spark plugs and tighten them.Use the spark plug socket #16.Use a torque wrench.Tighten it to 25 nm torque.
    Replacement: spark plugs – Mercedes W203. Professionals recommend:
    Don't tighten the plugs with excessive force. Exceeding tightening torque can damage the thread connection. Be careful when working with a spark plug wrench. Its skewing can cause damage to the threaded connection.
  13. How to change Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) 2004 - tips and tricks
    Step 13
    Install the ignition coils to the spark plug wells.Make sure you hear a click indicating that it is locked in place.
    AUTODOC recommends:
    Replacement: spark plugs – Mercedes W203. Follow the installation steps.
  14. Step-by-step recommendations for DIY replacement Mercedes W203 2005 C 200 CDI 2.2 (203.007) Spark Plug
    Step 14
    Tighten the fasteners of the ignition coils.Use a drive socket #E8.Use a torque wrench.Tighten it to 15 Nm torque.
  15. DIY replacement of Spark Plug on MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI 2.2 (203.008) 2006 is not an issue anymore with our step-by-step tutorial
    Step 15
    Run the engine for a few minutes.This is necessary in order to make sure that the component operates properly.
  16. How to change Spark Plug on Mercedes W203 2000 - free PDF and video manuals
    Step 16
    Shut off the engine.
    Step 17
    Install the engine cover and secure it.Use HEX No.HW5.Use a ratchet wrench.
  17. How to replace MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI 2.2 (203.006) 2001 Spark Plug - step-by-step manuals and video guides
    Step 18
    Remove the fender protection cover.
  18. Mercedes W203 C 180 1.8 Kompressor (203.046) 2002 Spark Plug replacement: free workshop manuals
    Step 19
    Close the hood.
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DIY MERCEDES-BENZ C-Class Saloon (W203) Spark Plug replacement - online guide
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