A partial update: The dealership left me a message today and told me that they were able to get the BTUM unit to work. I still don't know why it did not work, but I suspect it was a problem with the CPT system, not the BTUM itself. I will follow up with the specific diagnosis and repair.

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DRIVER8

2017 Range Rover Sport Dynamic SC V8
2019 Jeep Wrangler Rubicon
2019 Ford F150 Limited

Allegheny Chapter BMW CCA
Mountain State Chapter BMW CCA