Symptoms
VSC, TRAC or TRAC OFF lights that stay on after a battery change, alignment, sensor work or a fluid service — with no actual fault.
The fix, step by step
- Park on a level surface with the wheels straight, and perform Toyota's yaw/deceleration sensor zero-point calibration by jumping the diagnostic connector terminals with a paper clip as shown in widely shared guides (4Runners.com members link a YouTube walkthrough).
- If the light persists, scan for real codes before chasing anything else.
Tools & part numbers
- Paper clip
- level ground
- OBD-II scanner if it doesn't clear
Where to buy the parts
Hunting a used or discontinued part? Search eBay Motors for Toyota 4Runner 4th Gen parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.