That would honestly be the first time I've heard of such things taking out the CANBUS system. The collision avoidance thing also sounds pretty unlikely for a tail light. These systems are all well separated, and generally total system failures from an issue in an unrelated system are... unusual.It shorted out the network. It's been a couple years so I double checked my sources (my little brother fixed it after much investigation) It was the collision avoidance part flipping out because of water in the tail light on a MKX. Car did not run, accessories would not work and dash was dark.
He is up to 5 of them. My BIL is a senior master at a different dealer and has seen a few too.
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