One problem related to speed sensor has been reported for the 2003 Toyota Sequoia. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Toyota Sequoia based on all problems reported for the 2003 Sequoia.
I own a 2003 Toyota Sequoia sr5 with 95000 miles. Vsc, trac, and abs lights came on. Dealership said that the codes are faulty ecu. Cost of repair was $1700. The following week lights came back on. This time they tell me it is a faulty speed sensor on the front right. They recalibrated the vehicle and said if it comes back the cost of the repair is $400. Following week, the lights come on, same code for the speed sensor, so I have it replaced. Two days later, the lights are back on. Not certain what will code this time. After reading several posts online, it looks like this is a recurring issue with this vehicle. So, I'm filing a complaint sense there hasn't been a recall.