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I had the same issues above, tried fuses and even a new trailer control module, nothing worked until I took apart the wiring harness going into the trailer control module and found a shorted and corroded wire. The copper had disintegrated. Spiced and used waterproof butt connectors and now working again without error.

the dealer will replace speakers, chip and parking assist. I need to clarify on wheel well

agree on above just picked mine up today. Titanium Rush! I was worried it would look purple but actually more gray/black depending on lighting. On delivery Missing multipro speakers, parking assist, rear wheel well liners. I would like to upgrade wheels and speakers. Look forward to wheel/tire size max without rubbing and some speaker upgrades recs