A customer who brought his vehicle in for a check engine light and a misfire got a diagnosis nobody wants to hear. Something with sharp teeth had been living in his engine bay and had eaten a good part of the wiring harness.

The repair estimate came to nearly $3,200, the factory warranty would not cover it, and a dealership service director was left to explain why.

Mrs Boss Barr (@mrsbossbarr), a service director whose channel documents her working days at multiple Chrysler Jeep dealerships, posted a recording of the two-minute call that has drawn more than 96,800 views so far.

The caption she posted doubles as a brutal summary of the customer's situation: "Warranty won't pay for chewed wires."

"That's What's Causing Your Misfire"