Three problems related to automatic emergency braking have been reported for the 2006 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Sienna based on all problems reported for the 2006 Sienna.
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!.
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.
Every time I go around a curve, the abs trc and vehicle beeps like I'm sliding. It happens on every curve. Its very dangerous. I have unplugged the sensor under the front passenger seat and all problems go away. I have replaced this part and it still has not fixed the problem. With part unplugged I have no abs trc airbags none of the safety equipment is working while unplugged, but is safer than having my brakes slammed in every curve.