How to carry out replacement: Lambda Sensor ML 270 CDI 2.7 (163.113) ML W163
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Change ML W163 ML 350 3.7 (163.157) Lambda Sensor yourself – manuals and video tutorials

How to change lambda sensor on MERCEDES-BENZ M-Class (W163) – replacement guide

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When to replace the Lambda Sensor on your MERCEDES-BENZ M-CLASS
Recommended replacement interval for the part category Lambda sensor : 100000 km
Important!
This replacement procedure can be used for:
MERCEDES-BENZ M-Class (W163) ML 350, MERCEDES-BENZ M-Class (W163) ML 350 (163.157), MERCEDES-BENZ M-Class (W163) ML 500 (163.175), MERCEDES-BENZ M-Class (W163) ML 55 AMG (163.174), MERCEDES-BENZ M-Class (W163) ML 430 (163.172), MERCEDES-BENZ M-Class (W163) ML 320 (163.154) … 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 – Lambda Sensor for M-Class (W163) and other MERCEDES-BENZ models
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Simple DIY car repair steps – Replacing Lambda sensor on ML-Class (W163)
Lambda sensor for ML-Class (W163) Petrol (272 hp)
Easy tricks to help you to replace Lambda sensor on ML-Class (W163)
Lambda sensor for ML-Class (W163) Petrol (347 hp)
Lambda sensor removal & installation, incredibly easy steps for ML-Class (W163)
Lambda sensor for ML-Class (W163) Petrol (292 hp)
Changing Lambda sensor on ML-Class (W163) – tips for first time repair
Lambda sensor for ML-Class (W163) Petrol (245 hp)
Main steps for Lambda sensor replacement on ML-Class (W163)
Lambda sensor for ML-Class (W163) Petrol (235 hp)
Tools
Replacement: lambda sensor – MERCEDES-BENZ M-CLASS (W163). 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
Buy tools
Replacement: lambda sensor – MERCEDES-BENZ M-CLASS (W163). 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-BENZ M-CLASS (W163). 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
    Open the bonnet.
    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
    Lift the car using a jack or place it over an inspection pit.
    Step 6
    How to change Lambda Sensor on ML W163 1998 - free PDF and video manuals
    Undo the fasteners of the oil pan lower cover. Use a drive socket #8. Use a ratchet wrench.
  2. Step 7
    How to replace MERCEDES-BENZ M-Class (W163) ML 270 CDI 2.7 (163.113) 1999 Lambda Sensor - step-by-step manuals and video guides
    Remove the oil pan cover.
  3. Step 8
    ML W163 ML 320 3.2 (163.154) 2000 Lambda Sensor replacement: free workshop manuals
    Detach the oxygen sensor connector.
  4. Step 9
    Changing Lambda Sensor on MERCEDES-BENZ M-Class (W163) ML 55 AMG 5.4 (163.174) 2001 by yourself
    Clean the oxygen sensor fastener. Use a wire brush. Use WD-40 spray.
  5. Step 10
    How to remove MERCEDES-BENZ M-CLASS ML 430 4.3 (163.172) 2002 Lambda Sensor - online easy-to-follow instructions
    Unscrew the oxygen sensor fastener. Use a 22-mm oxygen sensor socket. Use a ratchet wrench.
  6. Step 11
    How to replace Lambda Sensor on MERCEDES-BENZ M-Class (W163) 2003: download PDF manuals and video instructions
    Remove the oxygen sensor.
  7. Step 12
    How hard is it to do yourself: Lambda Sensor replacement on ML W163 ML 500 5.0 (163.175) 2004 - download illustrated guide
    Cut the thread for the new oxygen sensor. Use a thread tap. Use a ratchet wrench.
  8. Step 13
    Need to know how to renew Lambda Sensor on MERCEDES-BENZ M-CLASS 2005? This free workshop manual will help you to do it yourself
    Treat the oxygen sensor. Use high-temperature ceramic grease.
  9. Step 14
    Changing of Lambda Sensor on ML W163 1998 won't be an issue if you follow this illustrated step-by-step guide
    Install the new oxygen sensor.
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