2009 Toyota Prius Engine Problems
- 15
- Owner complaint records in our dataset
Records are owner complaints, not a measured failure rate.
Owner complaint recordsComplaint records reflect reports in our dataset and do not measure how frequently the problem occurs across all vehicles.
Among these 15 stored complaint records:
- 1 indicate a crash
- 0 indicate injury
- 0 indicate fire
What owners report
- control valve · 5 records
- engine light · 4 records
- coolant control · 4 records
Mileage in stored records
| Band | Records |
|---|---|
| 60–100k mi | 6 |
| 100–150k mi | 4 |
| 30–60k mi | 3 |
| 150–400k mi | 1 |
Complaint records
Owner-submitted complaint content, presented as stored.
Engine
Tl* the contact owns a 2009 toyota prius. While driving at unknown speeds, the temperature gauge increased to high and coolant needed to be added to the vehicle. All of the indicators on the instrument panel were illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted and did not assist. The failure mileage was 151,759.
ODI 11164244
Engine
My car recently has a check engine light and the obdii scanner show the fault code p1121 which is a failed three-way coolant control valve. Toyota has issued a technical service bulletin (tsb) on this problem: eg001-08 m.i.l. It should be a recall because it's a common problem for 2nd generation toyota prius.
ODI 11160900
Electrical System · Engine · Power Train
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…
ODI 11144121
Engine
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.…
ODI 11065294
Engine
My 2009 toyota prius has 100,700 miles on it. When i took it in for it's last oil change i was informed that only a little over a quart of oil drained from the engine. I have religiously changed the oil every 3,000 miles. After replacing the engine oil it still looked dirty. The engine is burning oil. I understand that this is a common issue caused by a piston design flaw and does not have a cheap solution other…
ODI 11064449
Engine
Once my car got past 100,000 miles, the non-specific warning light started coming on and the word "problem!" would come on the screen. Manual says to ask dealer what the specific problem is. Certified toyota dealer kept saying they don't know. Turns out after my own persistence that the problem is heavy oil consumption. Not burning; not leaking. Just high consumption. Take car for regular maintenance and it seems…
ODI 11019789
Engine
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
ODI 11004980
Engine
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 vehicle was restarted after waiting a movement but the failure recurred. The vehicle was towed to an independent mechanic where it was awaiting a diagnosis. The manufacturer was not made aware of the failure. The failure mileage was 65,000.
ODI 10809981
Engine
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. *tr
ODI 10714262
Engine · Power Train
Service engine light, code p1121, coolant recovery tank flow control valve bad. There is a service campaign on this for 2007 prius and the problem is supposed to be solve for 2009 prius. Also this is part of the emission control system, as the purpose of coolant recovery tank is the warm up engine sooner to pass emission test. Called toyota dealer, not covered by emission warranty. This is a known and very common…
ODI 10660307
Engine
Toyota dealer receipt: check engine light on - coolant control valve stuck... Replaced coolant control valve cost/$589.97 including 450.00 labor + engine water pump leaking coolant replaced engine water pump/ engine drive belt cost/$557.98 including $430.00 labor mileage!!! 41, 632 miles 2009 prius total cost $1173.41. Customer complained to toyota motor corp and response was...no financial assistance -36,000 mile…
ODI 10653660
Engine
Water pump failure. 76,000 miles is premature for a waterpump. *tr
ODI 10683504
Engine
When my 2009 toyota prius reached approximately 65,000 miles, the check engine light came on, and the error code was p1121, indicating a problem with the coolant control valve. I took the car to my local toyota dealership, and their charge for replacing the part was $400. The mechanic who inspected the valve said it was not closing securely. He said making the repair would not improve the car's performance or affect…
ODI 10595823
Air Bags · Body · Engine · Steering
In an attempt to avoid oncoming calves on a county dirt road driver inadvertantly pulled steering wheel to the right and hit a tree at road side. Tree is twelve inched from road surface. Before seat belt restrained driver, driver's forward momentum broke the steering wheel. Driver was not injured. Went to local hospital er. Sheriff investigated. With the extensive damage to the front end of the vehicle the air bag…
Crash reported
ODI 10501231
Electrical System · Engine
The vehicle stalled out while i was driving, four times in about a mile - including once on a very busy road with no shoulder. The electrical error board lit up, the transmission reverted to neutral or park and i could not put the car back into drive. After i turned the car off, and then turned it back on, it went into drive but only for a short while before lights started flashing and it stalled again. *tr
ODI 10473270