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.
Problems for specific Toyota 4Runner years:
Car problem reports
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Most reported 2007 Toyota 4Runner problems
Front PSide Break Caliper seized.
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.