2012 Toyota Sienna transmission complaints

Filed Apr 19, 2019 · Transmission · 171,000 miles · CT

Front axle leaking fluid

Filed Apr 16, 2019 · Transmission · IL

Rear differential has failed at only 60k miles. Well documented issue for awd sienna models yet no recall issued. Safety concern for this family of five.

Filed Feb 8, 2019 · Acceleration, Brakes · 99,000 miles · ID

When coming to a stop going about 5 MPH towards a stop sign, my van accelerated into traffic. Because the van jolted me into oncoming traffic, it almost caused an accident. It doesn't seem to matter whether I am braking or coasting, the van will accelerate uncontrollably.I have two children and not only am I putting their lives at risk, but mine also. I am not able to drive this vehicle due to how dangerous it is.

Filed May 25, 2018 · Transmission · 47,000 miles · OH

Rear differential coupler dysfunctional without no reason. All of the sienna especially awd are suffering from this issue.toyota denies to cover it.

Filed Feb 9, 2018 · Transmission · 92,000 miles · SC · crash

While parked, driver began exiting vehicle and van began to roll and continued to roll when gear shift lever confirmed in park and brake continually pressed, eventually hitting a house.

Filed Oct 30, 2015 · Electrical, Fuel system · 79,000 miles · OK

All underwood components are not only vulnerable, but attractive to rodents. While parked overnight on 4 consecutive nights, rodents have chewed through wires despite attractive rodent poison in the engine bay, the poison is untouched and the wires are attacked every night. To date injector wires, sensor sires, fuel pump wires have been compromised, including sensors for the stability control system, which is disabled. I repaired damage by running new wires, clearing nests and set traps and poison, but now the the fuel system has been attacked and the fuel pump does not activate. 3 other cars parked in the same location for the past 5 months are untouched. Safety systems are likely to be compromised for any person who must park these outdoors.

Filed Apr 28, 2012 · Engine, Steering · 1,500 miles · NY

Joining highway in a situation where vehicles giving way cause hesitation and then give way causing braking then acceleration repeatedly, transmission refused to downshift on kick down, vehicle would not accelerate, actually slowed significantly forcing following vehicles to brake .vehicle eventually began to pick up speed.generally poor response from transmission in all modes. Transmission drops out of drive at low speeds causing engine to race before taking up drive, very hard to operate vehicle smoothly.. Excessive engine vibration and noise for this price point ,known more refined diesels knocking from steering column on constant radius turns when making small steering corrections, detectable at low and moderate to high speed.