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How to disable DRLs (Daytime Runnings Lights)?

12K views 17 replies 6 participants last post by  Jkcrist05330i  
You can find the E46 wiring diagrams here. BMW WDS Online

Do you have a good scanner with BMW software to be able to read the trouble codes in the light module (LCM)? If not, I suggest you set up BMW Standard tools (free software) on a windows laptop and buy the cheap special cable. This will set you up for doing your own fault finding for the next 100,000 miles of your ownership. How to Install BMW Standard Tools

Read the LCM codes and then you will have a better idea of where to start.

While you are waiting to set up BMW standard tools, you'll have to learn to pull the head light fuses to stop them draining your battery flat. The fuses are located through the glove box. There is a white card in there that will show you which fuses to pull.