Three problems related to wiring have been reported for the 2016 Toyota Prius. The most recently reported issues are listed below.
Rodents were attracted to the soy-based wiring used by Toyota and caused expensive damage by chewing wires. Toyota has had problems with this wiring and rodent damage for 4 years and I was unaware of this when I bought the vehicle. They refuse to pay for my damage and also refuse to replace the wiring with non-soy wiring, which means it could easily happen again. Many other customers, I discover, have reported rodent damage to wiring because of the soy-based material.
The coating on the wiring system attracted rodents to my car, the rodents ate through the electrical and tried to nest in the engine bay. The results were massive systems malfunctions and the car wasn't safe to drive. I had to get it towed to Toyota and they stated that this is a common problem. "they've seen alot of this recently".
Rodent damaged wiring and casings by eating/damaging both at a cost so far of $2700. I have owned this vehicle for one month. I've been told the warranty does not include the damage. I asked about where the dealership stored the vehicle prior to its delivery to me. I wasn't satisfied with their explanation.