Toyota 4Runner owners have reported 248 electrical system related problems since 1996. Table 1 shows the 26 most common electrical system problems. The number one most common problem is related to the vehicle's electrical system (163 problems). The second most common problem is related to the vehicle's wiring (25 problems). For details of each of the problem category, use the links in the table.
On August 29, 2026, I was stopped at a red light with my foot on the brake when I noticed the vehicle moving forward even though I was pressing the brake pedal. I immediately entered a nearby parking lot at very low speed. Read details...
Rodent chewed main engine wiring harness Read details...
The contact owns a 2003 Toyota 4runner. The contact stated that while the vehicle was parked, the contact noted that there were cracks in the dashboard near the air vents. The vehicle was taken to a dealer where it was diagnosed that the dashboard was cracking and needed to be replaced. Read details...
The vehicle stalls, incosistently, but, on a frequent basis, at any given time, then will be fine for a long period of time. It eats batteries. I've had to replace the battery every year. A local automotive electrical specialist replaced the b+ cable from the battery to the starter, and the problem Read details...
Warning lights began coming on around 60,000 miles or so. Started with the low tire pressure light & now has progressed to the vsc on, vsc off, abs warning lights being on all the time and the low tire pressure light is still on. Read details...