One problem related to traction control light on has been reported for the 2006 Toyota 4Runner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota 4Runner based on all problems reported for the 2006 4Runner.
2006 Toyota 4runner check engine light disables traction controll and vehicle stability controll when on. For instance the car needed a gas cap. So the check engine light came on as well as the traction control and vsc light. Icy conditions and having something such as this fail because of poor wiring could be very dangerous.