Traction control TCS light and engine on
Have the vehicle scanned for ABS codes and trouble codes to know what is going on, and what needs to be looked at. An auto parts store can do this for you. Write down the codes.
Hello I am also having this issue with my '04 Sienna . The traction control kicks in when it shouldnt jerking my steering left and right and pumping the brakes harshly on its own. I have reported it to Toyota corporate and they claim this is the first they have heard of it....which I seriously doubt! PLEASE report your issue to NHSP (National Highway Safety patrol) as I did. We NEED to force them to take this seriously before someone loses a life. You can file a complaint here or call: https://www-odi.nhtsa.dot.gov/VehicleComplaint/ I also have a issue where the sliding doors appear unlocked but you cannot get out from the inside or in from the outside. Noting like feeling like I am driving around a death box. If enough reports are made they will force Toyota to do a recall.
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