When to replace the Lambda Sensor on your MERCEDES-BENZ C-CLASS
Recommended replacement interval for the part category Lambda sensor : 100000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ C-Class Saloon (W203) C 180 (203.035), MERCEDES-BENZ C-Class Saloon (W203) C 200 Kompressor (203.045), MERCEDES-BENZ C-Class Saloon (W203) C 320 (203.064), MERCEDES-BENZ C-Class Saloon (W203) C 32 AMG Kompressor (203.065), MERCEDES-BENZ C-Class Saloon (W203) C 55 AMG (203.076) View more

The steps may slightly vary depending on the car design.

How to change lambda sensor on MERCEDES-BENZ W203 C-Class [TUTORIAL AUTODOC]

video
Tools
Replacement: lambda sensor – Mercedes W203. Tools you need:
Wire brush
WD-40 spray
Electronic spray
High-temperature ceramic grease
Torque wrench
Combination spanner #22
Drive socket # 8
22-mm oxygen sensor socket
Ratchet wrench
Thread tap
Fender cover
Replacement: lambda sensor – Mercedes W203. AUTODOC experts recommend:
  • After replacing the oxygen sensor, clear the trouble code from the electronic control unit and let the ECU adapt itself to the new sensor.
  • All work should be done with the engine stopped.
Replacement: lambda sensor – Mercedes W203. Recommended sequence of steps:
  1. Step 1
    Before getting down to work, start the engine and let it warm up to operating temperature.
    Step 2
    How to change Lambda Sensor on Mercedes W203 2000 - free PDF and video manuals
    Open the bonnet.
  2. Step 3
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 4
    Shut off the engine.
    Step 5
    How to replace MERCEDES-BENZ C-Class Saloon (W203) C 220 CDI (203.006, 203.008) 2001 Lambda Sensor - step-by-step manuals and video guides
    Lift the car using a jack or place it over an inspection pit.
  3. Step 6
    Mercedes W203 C 180 1.8 Kompressor (203.046) 2002 Lambda Sensor replacement: free workshop manuals
    Undo the fasteners of the oil pan lower cover. Use a drive socket #8. Use a ratchet wrench.
  4. Step 7
    Changing Lambda Sensor on MERCEDES-BENZ C-Class Saloon (W203) C 200 CDI (203.004) 2003 by yourself
    Remove the oil pan cover.
  5. Step 8
    How to remove MERCEDES-BENZ C-CLASS C 200 CDI 2.2 (203.007) 2004 Lambda Sensor - online easy-to-follow instructions
    Detach the oxygen sensor connector.
  6. Step 9
    How to replace Lambda Sensor on MERCEDES-BENZ C-Class Saloon (W203) 2005: download PDF manuals and video instructions
    Clean the oxygen sensor fastener. Use a wire brush. Use WD-40 spray.
  7. Step 10
    How hard is it to do yourself: Lambda Sensor replacement on Mercedes W203 C 200 2.0 Kompressor (203.045) 2006 - download illustrated guide
    Unscrew the oxygen sensor fastener. Use a 22-mm oxygen sensor socket. Use a ratchet wrench.
  8. Step 11
    Need to know how to renew Lambda Sensor on MERCEDES-BENZ C-CLASS 2007? This free workshop manual will help you to do it yourself
    Remove the oxygen sensor.
  9. Step 12
    Changing of Lambda Sensor on Mercedes W203 2000 won't be an issue if you follow this illustrated step-by-step guide
    Cut the thread for the new oxygen sensor. Use a thread tap. Use a ratchet wrench.
  10. Step 13
    MERCEDES-BENZ C-CLASS C 200 1.8 Kompressor (203.042) Lambda Sensor replacement: online guides and video tutorials
    Treat the oxygen sensor. Use high-temperature ceramic grease.
  11. Step 14
    Replacing Lambda Sensor on Mercedes W203 2002 C 220 CDI (203.006, 203.008) by yourself
    Install the new oxygen sensor.
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MERCEDES-BENZ C-Class Saloon (W203) Lambda Sensor replace by yourself - Scan QR-code and download AUTODOC CLUB app
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DIY MERCEDES-BENZ C-Class Saloon (W203) Lambda Sensor replacement - online guide
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