When to replace the Glow Plugs on your MERCEDES-BENZ C-CLASS
Recommended replacement interval for the part category Glow plug : 30000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class T-modell (S203) C 270 CDI (203.216), MERCEDES-BENZ C-Class T-modell (S203) C 270 CDI (203.216) 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: glow plugs – MERCEDES-BENZ C-CLASS T-Model (S203). Tools you need:
WD-40 spray
All-purpose cleaning spray
Dielectric grease
High-temperature ceramic grease
Torque wrench
Spark plug socket # 10
Drive socket # Е11
Ratchet wrench
Needle nose pliers
Fender cover
Replacement: glow plugs – MERCEDES-BENZ C-CLASS T-Model (S203). Tip from AUTODOC:
  • The replacement procedure is identical for all glow plugs.
  • Wear gloves to protect your hands from hot surfaces.
  • Warning! Shut down the engine before starting any work – MERCEDES-BENZ C-CLASS T-Model (S203).
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 Glow Plugs on Mercedes S203 2001 - free PDF and video manuals
    Clean dirt, dust and debris from inside the spark plug wells.
  2. Step 4
    How to replace MERCEDES-BENZ C-Class T-modell (S203) C 220 CDI 2.2 (203.208) 2002 Glow Plugs - step-by-step manuals and video guides
    Treat the glow plugs. Use WD-40 spray.
  3. Step 5
    Mercedes S203 C 180 1.8 Kompressor (203.246) 2003 Glow Plugs replacement: free workshop manuals
    If the glow plugs are difficult to unscrew, start the engine and let it warm up to operating temperature. This will make them easier to remove.
    Replacement: glow plugs – MERCEDES-BENZ C-CLASS T-Model (S203). Tip:
    Wear gloves to protect your hands from hot surfaces.
  4. Step 6
    Shut off the engine.
    Step 7
    Changing Glow Plugs on MERCEDES-BENZ C-Class T-modell (S203) C 200 CDI 2.2 (203.207) 2004 by yourself
    Unscrew the fuel hose fastener. Use a drive socket #Е11. Use a ratchet wrench.
  5. Step 8
    How to remove MERCEDES-BENZ C-CLASS C 270 CDI 2.7 (203.216) 2005 Glow Plugs - online easy-to-follow instructions
    Disconnect the fuel return line hose.
  6. Step 9
    How to replace Glow Plugs on MERCEDES-BENZ C-Class T-modell (S203) 2006: download PDF manuals and video instructions
    Blank off the fuel return line.
  7. Step 10
    How hard is it to do yourself: Glow Plugs replacement on Mercedes S203 C 200 1.8 Kompressor (203.242) 2007 - download illustrated guide
    Detach the glow plug wiring connectors. Use needle nose pliers.
  8. Step 11
    Need to know how to renew Glow Plugs on MERCEDES-BENZ C-CLASS 2001? This free workshop manual will help you to do it yourself
    Clean dirt, dust and debris from inside the spark plug wells.
  9. Step 12
    Changing of Glow Plugs on Mercedes S203 2002 won't be an issue if you follow this illustrated step-by-step guide
    Unscrew the glow plugs. Use the spark plug socket #10. Use a torque wrench.
    Replacement: glow plugs – MERCEDES-BENZ C-CLASS T-Model (S203). AUTODOC recommends:
    The glow plugs can get stuck over time and break apart when removed.Use a torque wrench to loosen the parts to avoid exceeding the breakaway torque specified by the car manufacturer.If you have reached the breakaway torque but the glow plugs still won't unscrew, you need to consult a professional: breakage of the parts can result in costly engine repairs.
  10. Step 13
    MERCEDES-BENZ C-CLASS C 200 2.0 Kompressor (203.245) Glow Plugs replacement: online guides and video tutorials
    Remove the glow plugs. Use needle nose pliers.
  11. Step 14
    Replacing Glow Plugs on Mercedes S203 2004 C 220 CDI 2.2 (203.208) by yourself
    Treat the glow plugs. Use high-temperature ceramic grease.
  12. Step 15
    C-Class T-modell (S203) C 270 CDI 2.7 (203.216) 2005 Glow Plugs DIY replacement workshop manual
    Install new glow plugs to their mounting seats. Use needle nose pliers.
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DIY MERCEDES-BENZ C-Class T-modell (S203) Glow Plugs replacement - online guide
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