Question 1

How do I know if rodents chewed my car wires?

Accepted Answer

The most common signs are a check engine light or several warning lights appearing at once after the car sat overnight, a car that cranks but will not start, a burning or foul smell from the vents, chewed hood insulation, droppings or nesting material (leaves, paper, foam) under the hood or in the cabin air filter, and ADAS warnings such as a disabled camera, parking sensor or blind-spot system.

Question 2

Why is rodent damage so common in San Bruno and the Peninsula?

Accepted Answer

Mild winters let roof rats and mice stay active year-round, and much of San Bruno, South San Francisco, Daly City, Colma and Pacifica borders open space, cemeteries, creeks and hillsides. Cars parked outside or in garages overnight give rodents a warm, sheltered engine bay. Cars that sit for days at a time — airport parking, work-from-home cars, second cars — are hit most often.

Question 3

Which cars get the most rodent damage?

Accepted Answer

Any car can be damaged, but we most often repair Toyota, Lexus, Honda and Subaru models — the most common cars on the Peninsula. Many newer vehicles use soy-based or other bio-based wire insulation, which some owners and repair shops believe makes wiring more attractive to rodents. The injector, knock sensor and engine harnesses under the intake manifold are frequent targets.

Question 4

How much does rodent damage repair cost?

Accepted Answer

It depends on what was chewed. A single splice on an accessible wire is a short job; a chewed sensor pigtail needs a new connector; damage to a main engine harness under the intake manifold can require a harness section or full harness replacement and several hours of labor. We inspect the whole car first and quote the complete repair before starting.

Question 5

Does car insurance cover rodent damage?

Accepted Answer

Rodent damage is often covered under the comprehensive portion of an auto policy, subject to your deductible. Coverage varies, so check your policy or call your insurer. We give you a written estimate and photos of the damage, which is what most insurers ask for.

Question 6

Can I drive with chewed wires?

Accepted Answer

It is not recommended. A chewed wire can short, drain the battery, disable sensors the engine and brakes rely on (such as ABS wheel speed or crankshaft position sensors), or stall the car in traffic. If you see new warning lights after the car was parked, have it inspected before driving far.

Rodent Damage Repair: Chewed Wiring, Nests & Warning Lights

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