Car won’t start. Pull a code B2799.

Hello, it still sounds like a concern with an improper or improperly programmed key being used for your vehicle. If not, I suppose in rare occasions you could have additional issues with wiring or the related control module. Did you check for any blown fuses? Was the vehicle ever jump started -- was that tried when the battery was needed? A power surge could have caused issues. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops