One problem related to car slowed down on its own 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.
While I was driving at an approximate speed of 40 mph, I noticed my brake, trac off, vsc trac, engine light all came on at once. I noticed that braking was not as responsive (increased braking distance; abs doesn't seem to be engaging) and when speeding to over 50 mph, the vehicle feels as if it is slowing itself down. It is currently an expected heavy rainfall season where I am and having the vehicle in this state is very dangerous especially when the brakes are not working effectively or when it starts to slow itself down suddenly. After shutting the vehicle down and restarting it after about 2 hours, the lights mentioned are still illuminated except the brake light. After reading all the other similar complaints, I am surprised Toyota is not paying for all aspects of this defect associated with the vehicle and not driver misuse.