2022 Toyota 4runner Electrical Problems

Your 4Runner's wiring harness was damaged by rodents (likely squirrels) that were attracted to the soy-based wire insulation used in the vehicle. This damage disabled all of your safety features, including lane departure warning and forward collision avoidance, leaving your car without these important protections. Repairing the harness costs around $8,000 and requires replacement parts that may take months to arrive. The fix will involve replacing the damaged wiring harness with a new one.

When you turn the steering wheel, your car's infotainment system malfunctions — the radio channels change on their own, phone calls drop, GPS stops working, and the airbag warning light illuminates. Your dealership identified the steering wheel spiral cable as the cause and quoted $1,200 to replace it. This repair involves replacing the spiral cable assembly that connects your steering wheel to the car's electrical systems.