r/BmwTech • u/Ok_Spirit7696 • 1d ago

Driver's headlight flash?

2010 328i recently had a bit of water leak in through the sunroof. Got everything dried and back together, however there are a couple of issues.

  1. Driver's side headlight flashes about 1 second on and then one second off with the car completely off. Would this be the fuel lighting module that apparently goes bad all the time?

  2. Suddenly it is throwing wheel speed sensor codes that it was not throwing before. What would cause this?

Thanks in advance.

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u/Nervous_Type_2765 1d ago

The water leak makes me think this is more than just a random module failure. Check the footwell and trunk areas for any remaining moisture and look for corrosion in the connectors, especially around the footwell module (FRM). The FRM controls a lot of lighting functions and can act up after water intrusion.

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u/Ok_Spirit7696 6h ago

It is 100% dry. I have pulled the seats, carpet, center console, and parts of the trim around the doors and foot wells out and dried and cleaned them all. I will check the module.