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What did they replace? The D1S bulb? Do you know if they replaced the door on the back? Over time, the seal will form to the housings lip and if you don't replace it exactly as it came off, it will allow condensation into the housing.
This may have blown your ahl module which controls the stepper motors for adaptive lighting.
Auto leveling is a mandated feature on xenons and is active whether or not the switch is in the auto position.
Are you getting any errors on your dash for adaptive? Normally when the ahl module is faulty, a code will come up and trip an adaptive error on your dash. It looks like a headlamp with a line through it I think.
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