Important!
This replacement procedure can be used for:
BMW 3 Saloon (E46) 318 d, BMW 3 Saloon (E46) 330 d, BMW 3 Saloon (E46) 320 d, BMW 3 Saloon (E46) 320 d, BMW 3 Saloon (E46) 330 xd, BMW 3 Saloon (E46) 318 d View more

The steps may slightly vary depending on the car design.
Similar video tutorial
This video shows the replacement procedure of a similar car part on another vehicle
All the parts you need to replace – Mass Air Flow Sensor for 3 Saloon (E46) and other BMW models
How to change Air Mass Sensor on BMW E46 320d 2.0 – step-by-step instructions for straightforward car repair
Air Mass Sensor
How to change Air Flow Sensor on BMW E46 320d 2.0 – step-by-step instructions for straightforward car repair
Air Flow Sensor
Tools
Replacement: mass air flow sensor – BMW 3 (E46). List of the tools you'll need:
Electronic spray
Torque wrench
Drive socket # 12
HEX bit No.H5
Torx bit T25
Torx bit T30
Ratchet wrench
Microfibre towel
Fender cover
Replacement: mass air flow sensor – BMW 3 (E46). AUTODOC experts recommend:
  • Сlear the trouble codes from the electronic control unit if necessary.
  • Make sure that no dust or dirt gets into the air duct components and the throttle body.
  • Please note: all work on the car – BMW 3 (E46) – should be done with the engine switched off.
Carry out replacement in the following order:
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DIY BMW 3 Saloon (E46) Mass Air Flow Sensor replacement - online guide
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