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Thanks for the info, heres some more info for context, perhaps there is another solution. We were installing an aftermarket audio system, which somehow shorted the A2B audio bus output on the MCU. The A2B output on the MCU shows continuity with ground. Now, only the front surround speakers...

Hello there, my shop is currently working on a 2020 Tesla Model 3 with MCU version 2. The date of manufacture is 12/2019. We are having an issue where the A2B bus is being shorted to ground. Resulting in the overhead microphone and rear amplifier not working. We have purchased an identical...