One problem related to ignition module has been reported for the 2004 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota 4Runner based on all problems reported for the 2004 4Runner.
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. I have taken this vehicle into 2 different dealers to be fixed for 40,000 miles or around 3 years which amounts to multiple trips to the dealer, waiting while they work on it or going without a vehicle for days at a time while they try to figure out what is wrong. They have replaced abs sensors, engine computers, brakes, speed sensor wires, reset computers, ordered new valve stems for the tires. I can get online & find thousands of complaints regarding the same issue in Toyotas & Lexus vehicles since at least 2001. The dealerships look at me like I am the very first & only person to ever mention these problems. The solutions online have ranged from defective master cylinder/brake booster assembly, faulty ignition coil, O2 sensors, vsc computers, catalytic converters & brake pedal switches. Also problems with the exhaust system & acceleration module under the console was listed as fixing these issues. Why has this issue not been addressed and/or fixed in 8 years ? there have been times when my brakes did not work, times when they barely worked, times when I put the brakes on & it abruptly pulls to the left or right & a couple of times when my vehicle would not accelerate as I was pulling across traffic. As I read of these "freak" accidents lately with Toyotas, I have to wonder if they really are "freak accidents". I do not want my family or myself to be one of the Toyota fatalities this year or anytime. When is something going to be done ? how many more innocent people have to die ?.