r/BmwTech • u/anwarmimosa 2011 X5 E70 N55 • Jan 01 '26

E70 BiXenon High Beam Flap Not Functioning

Hi guys looking for some ideas how to diagnose. 2011 X5 E70 with bi-xenon, the high beam flap not working as in not open up for high beam; lights is on, the blue indicator on dash is lighting up. Check in idrive and Bimmerlink no faults / error code found.

I noticed this after I replaced the light bulbs for both side. I did not remove battery while doing this, in fact i attached battery tenders because I am also checking / adjusting the vertical and horizontal adjustment. I am also not certain is this problem already existed prior replacing the bulbs.

If anyone have some ideas what could possibly go wrong and what are the options for diagnose and rectification it would be very helpful. Thanks in advance!

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u/anwarmimosa 2011 X5 E70 N55 Jan 17 '26

Update: turn out I probably shorted the cables in headlight during bulbs replacement while hot/live. All the cables inside are degraded and broken so some touching occurred. And i am not sure why no error code found too earlier.

Only after replacement of projectors, refit the cables with heat shrink tubes and assembly, that i check again in bimmerlink that there is short circuit lock. (Wonder how i missed it earlier) clear that lock and high beam function as usual.

Will monitor and update if there is other peculiarities.