Back to all

The Edible Engine

January 5, 2025

You may have had a friend whose vehicle was the victim of hungry rodents.  After all, mice, rats and squirrels—even rabbits—have been known to gnaw on wires in engine compartments, causing vehicle electrical systems to go haywire.  They can disable a vehicle completely and be very expensive to fix.

In 2017, some drivers noticed their vehicle's wiring was being chewed and found out the automaker was using a relatively new material for covering their wires: soy.  Many of the repairs to their new vehicles weren't covered under warranty by the manufacturer when it was discovered rodents were eating the wiring.  So the owners filed a class action suit, saying the soy covering was essentially baiting the critters. 

The automakers tell a different story, saying mice, rats and squirrels have been chewing through wire insulation long before it was made out of soy. 

Regardless of what the insulation is made of, vehicle owners should make sure rodents aren't chowing down and creating a problem in the engine compartment.  They can have their repair facility check for these signs:  Little bits of acorns, leaves, chewed up plastic and animal droppings in the engine's nooks and crannies.  Using a black light, your technician can detect animal urine, a sure sign that they've been using your engine compartment as a warm apartment, a nest and a dining room. 

You can take steps to prevent rodents from chomping your vehicle's parts.  Honda—one of the vehicle manufacturers that uses soy-based wiring covering—makes a rodent tape.  It contains a spice called capsaicin that rodents find too hot to handle.  Other preventative measures include installing metal mesh around wiring harnesses or spraying the engine compartment with special rodent-repellants. 

Rodent damage can cost one vehicle owner thousands of dollars to fix, not the kind of bite anyone wants taken out of their bank account. 

Ron's Auto Service
1517 SE 25th Ln
Cape Coral, FL 33904
2398290873

Need Service?

More articles from Ron's Auto Service

Winter Watch List (Winter Maintenance Items)

September 6, 2026

Don't love winter weather? Here's a list of four things you need to keep a watch on during the winter months. Let's start with coolant levels. Coolant is as important in cold weather as it is in hot weather. Think of the term "anti-freeze." Your coolant needs to be adjusted for climate and tem... More

Cape Coral Customer Detective Work

August 30, 2026

One might say the most challenging part of being an automotive service technician at Ron's Auto Service is diagnosing a problem before it can be fixed.Cars are made up of a bunch of complex systems. There usually could be a number of reasons for any given symptom. So, it's challenging to track do... More

All Lined Up: Wheel Alignment Service at Ron's Auto Service

August 23, 2026

When all of your vehicle's wheels are lined up exactly with each other, your wheels are in alignment. Hitting a road hazard or even just the normal bumps and bounces of everyday driving in Cape Coral can cause your vehicle's wheels to be out of alignment.Driving for an extended time around Cape... More