2011 Toyota Prius transmission problems

Filed Apr 27, 2026 · Acceleration, Brakes · TX

I was driving my car and suddenly the traction , hand brake and ABS sign started showing up. I usually apply only 10% of force on brake pedal but after this I have to apply almost 60% of force to even slow down the car. Almost 90% force to stop the car It has threatened safety of my family. When diagnosed at autozone they told cannot determine error code. When reading in internet this seems to be common problem in prius. Please help is fixing the issue as it is not at my fault. This seems to be manufacturing defect.

Filed Jan 21, 2021 · Brakes, Electrical · 200,000 miles · FL

Brakes completely failed. Loud beeping sound happened, couldn't stop car even in a parking lot. Had to use transmission to slow to a stop. Was in a grocery store parking lot.

Filed Jul 19, 2020 · Engine, Transmission · 147,000 miles · CA

My car had the hybrid system software update recall done and it still stall while driving , even at highway speed

Filed Aug 23, 2019 · Engine, Transmission · 57,000 miles · VA

Car stalled pulling into traffic. Took about 15 sec to restart. No diagnostic lights lit up on dash. Car lost power last month and engine light went on and engine could not be restarted.had to be towed to dealership. It replaced valve assembly for vacuum and reprogrammed PCM. However, that issue was preceded by a creep of diagnostic lights (course of 1 hour), from check oil to check engine, and then it completely shut down.

Filed Apr 25, 2019 · Acceleration, Brakes · MN

When breaking and still moving, the car will accelerate momentarily resulting in going faster for a second or two. This happened randomly over the years and may in some instances be related to hitting an irregularity in the road, but I cannot be sure. It has not caused an accident, but is strong enough that it could. I'm a pretty safe driver so tend not to ride on the tail of the car in front of me. I have not kept track of when it happens.

Filed Apr 11, 2019 · Engine, Transmission · 192,000 miles · GA

My toyota prius loses power randomly after having the recall fix j0v completed updating the software in inverter. Vehicle stalled 3 times on freeway, highway and off ramp. Dash board lights light up with all warning lights. Vehicle loses power....can drive a mile or so with almost no power...then vehicle shuts down. Dash panel reads check hybrid system conditions are exactly the same as the ze3 warranty enhancement program describes. However the dtc code is slightly different so dealer and toyota will not fix inverter. The car is dangerous to drive as the symptoms appear randomly, usually after an acceleration of the vehicle puts load on engine. Pls help me

Filed Feb 15, 2019 · Engine, Transmission · 1 miles · CA

Went in to have the spark plugs and 2 coils(cylinders 1 & 2) started shaking, knocking and smoking at the time I picked it up. Check engine light is on and hasn't gone off. The mechanic I take the vehicle to says it is a problem with this model car, trying to determine this, since he stated it is now my head gasket that needs replacing.

Filed Dec 5, 2018 · Transmission · 162,000 miles · AZ

While driving my 2011 prius intermittently changes from drive to neutral. The car continues to roll but slows down. A warning comes up on the screen that the car is in neutral. I can pop the gearshift into drive and it seems fine, and may or may not behave the same way again. This has occurred on the freeway as well as on city streets. There does not seem to be any correlation to acceleration or deceleration or to movement (turns or changing lanes). I have taken it to the dealer who states that the systems check out fine and they were not able to duplicate the problem. (it is intermittent and I am not able to duplicate it either.) I never had this problem until after I had my car thoroughly steam cleaned. It has been suggested to me by another prius owner that it might be a switch. But, again, the dealer says the systems check out fine.

Filed Jul 12, 2018 · Transmission · 166,017 miles · CA

Was driving on the on the surface street about to get on the freeway and the vehicle would not accelerate the hybrid system light came on.

Filed Jul 10, 2018 · Transmission · 138,216 miles · CA

The check hybrid system light came on.