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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Xenon Adaptive Lights



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      Yesterday, 10:47 AM   #1
jg3360
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Xenon Adaptive Lights

Both left and rt headlights throwing code that control lost comm/ power and I have the adaptive headlight failure icon on dash. Any suggestions as to what the cause/causes maybe?
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      Yesterday, 05:52 PM   #2
djh2
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That usually means the stepper motor controller (SMC) is having issues, there is one in each headlight. Do your head lights show condensation or have any history of water damage?

The smc is located at the bottom of the headlight and usually gets water damage over time if there is a leak in the headlights.

Other than that, you might have corrosion on the contacts or a bad wiring connection. Are your headlight stock or modified?
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