2006 Toyota Sienna driver assistance problems

Filed May 14, 2022 · Brakes, Driver assistance · CA

Vehicle Trac Control/ABS system engages periodically especially on winding roads between speeds of 30-60mph. Trac Control alarm goes off and vehicle pumps brakes automatically, then resolves. This is extremely dangerous especially when roads are wet/icy or when being followed too closely by another vehicle. Tried replacing front right wheel speed sensor but problem persists. Research shows this is a chronic problem with Sienna vans and needs to be repaired or guidance provided by Toyota on how to resolve before someone gets hurt. Please help!

Filed May 9, 2022 · Acceleration, Driver assistance · MT

While driving vehicle on dry, non slippery roads with slight to moderate curves, vehicle illuminates Traction Loss light, sounds alarm buzzer, and at times applies brakes and dethrottles engine, even when no loss of traction has occurred. This happens while driving on straight roads with slight unevenness. Had to disconnect wheel speed sensor harness to disable ABS/VSC system. When this happens, the vehicle automatically applies brakes to certain wheels and dethrottles the engine, this can pull the vehicle to one side sharply and can cause an accident.

Filed Oct 31, 2020 · Acceleration, Driver assistance · 191,000 miles · MO

Traction control and ABS activated on dry roads acting like the vehicle thought it was going into a slide/skid. This could have caused a serious crash!

Filed Oct 20, 2020 · Driver assistance · 233,000 miles · MD

Stability control comes on intermittently while driving on dry road scaring me and pumping brakes and pulling car to the right for no good reason at highway speeds... Alarm sounds ...very distracting and dangerous I pushed the track control button to "off" position and it still does it!!!

Filed Jul 5, 2020 · Driver assistance, Electrical · TX

This happened to our 2006 sienna today I was about to stop the car white parking it; we put the park they sill run; they never stop, so I turn off the engine; now they no more start very damaged

Filed Mar 29, 2020 · Driver assistance · 142,000 miles · CA

Randomly, on gentle turns our van will suddenly brake with traction control lights and beeping as well. It is always on a windy highway at speeds greater than about 35 MPH. We are slower than average cautious drivers. This seems very dangerous to be happening without provocation. I have done an enormous amount of research on this and have found a myriad of other people experiencing the same same problem, and all have found no fix for the issue. They usually go to the dealer multiple times with no success. I don't have the funds to go round and round with the dealer to end up with a repair that still isn't resolved. Pleas help. Thank you.

Filed Feb 21, 2020 · Acceleration, Driver assistance · 250,000 miles · NC

At speeds of anywhere between 30-60 MPH, traction control system engages when turning slightly left. Alarm comes on, brakes are automatically applied. Very dangerous

Filed Jan 30, 2020 · Driver assistance · 145,000 miles · AZ

The traction control is malfunctioning and turning on during normal driving conditions. There is a loud beeping and the traction control light turns on while turning. This has happened at various speeds from 35 MPH on a city street to 65 MPH on freeways. What is really alarming is that sometimes while the light turns on the system applies the brakes to one wheel pulling the vehicle suddenly to one side. This is very dangerous at high speeds. I have replaced many parts- shocks, control arms, joints and taken it to multiple mechanics. This is a common problem when searching the web but nobody is able to find a solution.

Filed Jan 15, 2020 · Driver assistance, Steering · 100,000 miles · CA

Electronic anti-sway override kicks in for no apparent reason at highway speeds. Usually when taking slight banks or turns over 35 MPH.

Filed Dec 18, 2019 · Acceleration, Brakes · 145,000 miles · CA

When driving at speeds of 38 MPH or more and turning the steering wheel/tires, the vsc warning alarm will go off. When this happens, the cars automatically brakes. This happens when there are no problems with the driving conditions. The severity of the braking and length of alarm vary. It is especially problematic on tight turns. It does not matter whether you are going uphill, downhill, or turning on a flat road. We do not know what is causing this unsafe issue. We have tried turning off the trac. It made no difference.