330: And All Through The Shop, Not A Creature Was Stirring... Expect For This Hungry Mouse
About this episode
Rodent damage to vehicle wiring can cause unique and challenging electrical issues, especially when mice chew on critical CAN bus wires. The host shares intriguing cases, including two Ford F-150s with the same wire chewed years apart and a complex 2019 Toyota Corolla HVAC problem caused by a mouse chewing wires under the fuse box. The episode highlights how rodent damage can cause open and short circuits, backfeed power through modules, and create puzzling symptoms. Diagnostic tips include checking CAN bus bias voltage and carefully tracing power feeds to isolate faults. It’s a deep dive into unusual electrical diagnostics driven by unexpected rodent behavior.
This week on the show I share an interesting issue on a 2019 Toyota Corolla where the HVAC controls stay operational after the key is left on, and also how rodents keep us on our toes by creating unique problems.
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Ford Escape
"...twisted pair. I don't know. Anyways, I had a Ford Escape recently, where that was the case. Not only did t..."
Toyota Corolla
"...allowed this to happen. So this was a 2019 Toyota Corolla. And the issue that they were having was once you..."
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