general problems of the 2009 Toyota Prius

11 problems related to engine and engine cooling have been reported for the 2009 Toyota Prius. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Toyota Prius based on all problems reported for the 2009 Prius.

1 Engine And Engine Cooling problem

Failure Date: 02/11/2025

Breaking system failure do to asb actuator, breaks are locking and vehicle is engine braking.

2 Engine And Engine Cooling problem

Failure Date: 09/21/2024

The engine light went on while driving on the highway. We immediately pulled over and had the vehicle towed to the nearest dealership. The dealership informed us that both the brake actuator (Toyota part to44500-47141) and water pump (Toyota par tog9020-47031) had failed. The car was no longer save to drive.

3 Engine And Engine Cooling problem

Failure Date: 06/15/2021

My 2009 Toyota Prius abruptly lost power while driving. The electrical system turned off and the vehicle stalled while going 50 mph on a 2-lane parkway. While I was able to put my hazard lights on and steer the vehicle, I had no other control and was at a high risk of a crash. There's no emergency lane and few areas wide enough to pull over on the parkway. I was forced to coast the vehicle until I could pull off the parkway onto a patch of grass off the busy road. There were no warnings, messages, or other symptoms of the problems prior to failure. I had plenty of gasoline in the tank, so it wasn't due to a lack of fuel. The car would not start after pulling over and I had to get towed. After researching the issue, it sounds very similar to the safety recall involving certain 2013-2015 model year Prius and 2014 – 2017 model year Prius v in the united states, the press release for which was published on June 24 2020: https://tinyurl. Com/4mrnz9nr furthermore, the los angeles times wrote an article on April 23 2018 about a similar issue, referring to a recall in 2014 which was intended to fix overheating problems in the 2010-204 Prius inverter. Those recall documents suggest that Toyota has been tracking this issue with the inverter since 2011. Https://tinyurl. Com/afwvt2sc a sudden power loss is generally considered a serious safety defect. I could have gotten into a serious car accident today and injured myself or other drivers. The 2009 Toyota Prius model had a recall issued on recall date: 11/14/2012 under NHTSA campaign 12v536000, referring to a "short circuit between coil wires and a possible open fuse, creating a stall-like condition of the hybrid system while the vehicle is being driven. This may increase the risk of a vehicle crash. " at this time, I don't believe Toyota has conducted due diligence into ensuring the safety of the 2009 Toyota Prius model. The vehicle has not yet been inspected by the manufacturer or insurance reps.

4 Engine And Engine Cooling problem

Failure Date: 12/31/2018

Tl-the contact owns a 2009 Toyota Prius. The contact stated while driving at unknown speeds the temperature gauge increased to high. In addition coolant needed to be . Added. All of the instrument cluster lights were illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted but no further assistance was provided. The failure mileage was 151,779. Ap.

5 Engine And Engine Cooling problem

Failure Date: 10/06/2018

Complete shutdown of Prius automobile with no warning while in motion on a city street. Rolled to a stop in safe area. Nothing worked except emergency blinkers. No instrumentation or warning lights appeared. The car was locked in fwd park and could not be towed by flatbed tow truck as there is no override. Lift tow truck was used to get to dealer. Diagnosed as melted hybrid invertor pump. Dealer replaced pump and fuse for a $641. 47 cost to me. If this had happened on a highway/freeway it would have been a disaster. The complete loss of power without warning at freeway speed could very easily ended up as a multiple car pile up. Just the thought of crossing multiple lanes in traffic with no power, just rolling, makes me think it's time to get rid of this car.

6 Engine And Engine Cooling problem

Failure Date: 01/25/2018

I keep getting the code p 1121. I have replaced my engine coolant valve sensor unit three times and every single time after driving for a week the chickens and light comes on and it throws the code again. I am currently at the point where there is either no heat or it takes at least half hour or more to blow hot air. If it blows hot air it only can be on a low fan setting. I have used two different manufacturers. But unfortunately every time I replaced it same problem occurs. I have reported this in the past and there was no response. But it is occurred multiple times since. And I know there is a recall on vehicle years prior to mine.

7 Engine And Engine Cooling problem

Failure Date: 07/11/2017

Emgine coolant sensor is messed up. There is a technical service bulletin for 2004 to 2007 or 8 by Toyota. This is the same issue and the same parts used up to 2009 but they will not cover it even though it's a known issue by Toyota.

8 Engine And Engine Cooling problem

Failure Date: 01/01/2016

2009 Toyota Prius. Consumer writes in regards to damaged inverter.

9 Engine And Engine Cooling problem

Failure Date: 12/14/2015

Tl- the contact owns a 2009 Toyota Prius. The contact stated that while driving 50 mph, the engine started to rev and vehicle accelerated uncontrollably. The contact pulled over to the side, turned the vehicle off for a few minutes. The failure recurred when the vehicle was turned back on. The contact called for help and vehicle was towed to an independent mechanic, waiting for diagnosis. The manufacturer was not made aware of the failure. The failure mileage was 65,000. Fe.

10 Engine And Engine Cooling problem

Failure Date: 05/01/2015

The 2009 Prius engine has a defect in the seals allowing oil to seep into the engine and be burned. This causes the motor to use extensively more oil than needed. Causing possible near failure. It must be critically maintained or the engine will run dry and destroy itself.

11 Engine And Engine Cooling problem

Failure Date: 08/29/2009

Noxious fumes inside vehicle. Smells like burning plastic / metal. Fumes burn eyes and permeate clothing, cause light-headedness. Dlr has tried 3x to repair, can not identify source. Dlr's svc mgr confirms it is not a normal odor for this vehicle, agrees fumes give headache. Mfr's tech dept claims it is normal, despite not having examined vehicle. (mfr is willing to send field svc tech in appx 1 month, will not provide loaner or otherwise accommodate me in the interim. ) mfr suggested it is a personal health issue and that I "should consider if vehicle is right for me. ".



Safety Ratings of Prius Cars
Fuel Economy of Prius Vehicles
Prius Service Bulletins
Prius Safety Recalls
Prius Defect Investigations