2003 Toyota 4Runner Problems
RepairPal has identified the most common problems with the 2003 Toyota 4Runner as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.Refine by vehicle
The Toyota 4Runner may develop a condition with the HVAC ducting system causing noisy and faulty operation of the blend doors. The blend doors are actuated by the selector button, and change the direction of airflow to the selected location, i.e. vent, floor, defrost.
The correction is to replace the blend doors.
At 125,000-150,000 miles, the Master Cylinder may need replacing. It is critical to adjust the brake pedal to Master Cylinder pushrod clearance or the brakes will drag and over heat.
Usually by 150,000 miles the AC system will need some attention, especially in climates where it is used often. Our technicians tell us that it is best to service the AC system every 2-3 years. This keeps the moisture in the system at a minimum which extends the life of the components.
If the car will not start, the most likely problem is worn or corroded solenoid contacts in the starter. Usually, these parts can be replaced without purchasing a new starter.