Insulation on some car wires is plant-based, so rodents they readily chew it. In a hybrid a damaged orange cable or a sensor loom is enough to stop the car entering READY.
How to tell
- It drove in the evening, in the morning there is an isolation fault
- Tooth marks, nesting or droppings by the under-bonnet cover and by the pack
- A hybrid system message with no recent collision and no coolant loss
Repair
We do not wrap an orange cable in ordinary tape and drive “home”. HV insulation has to withstand hundreds of volts. The loom is repaired or replaced and leakage is measured before the contactors close again. Do not leave pet food in the garage, and shield the vulnerable sections.
The car died overnight in the garage and will not enter READY? We will check the loom insulation.
Visit Green Serwis in Krakow — we specialise in Toyota and Lexus hybrids.
Book a visitSummary
Regular diagnostics and careful use keep a hybrid free of surprises. If you have questions after reading — see our hybrid service or contact us.

