Well don't tell the dealer what your doing otherwise they might not be happy just say to them you want it set to Xenon = Present and they should do it for you.
They don't need to know why you want it done.
With the highbeams it should all be fine like i said but i really cant guarantee that because with Xenon's the car just sends a burst of power down the line to the flaps but then the whole wiring harness is different for them so it all depends on if it supply's the right power
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