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Trailer Mode Won't Turn Off

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I just got back from the service center on this issue. They found a blown fuse.

Concern: Customer states: The trailer mode indicator is defaulting to blue, indicating a trailer is detected even without the
hitch installed. I can manually override to enable Autopilot but looking for a permanent fix.

Found fuse F105 blown in frunk fuse box. Replaced fuse and tested system. Vehicle now operating as designed. Advise
customer to test trailer lighting system prior to plugging into vehicle to avoid blowing fuse again. Fuse it a Blue 15 amp
micro.​