2013 Toyota Prius: engine overheating

Filed Mar 13, 2024 · Brakes · CA

The brake pump which pressurizes the nitrogen accumulator kept cycling on more and more frequently until it was cycling on every 8 seconds after stopping while trying to maintain pressure in the automated brake system. Brake pressure began pulsating when applying brakes and was slowly becoming noticeably more unstable as time progressed. I could also hear a steady flow of fluid through the booster/master cylinder unit. This seems to be a common issue often being discussed online in forums like “Prius Chat”, an online car community describing the characteristics of the power brake system in this vehicle before it fails as well as with a number of online youtube mechanics replacing these units. It seems as though the solution is for dealerships to charge in many cases more than 4000 dollars to replace both the entire “Brake Booster Assy, w/Master Cylinder” and the “ Pump Assy, Brake Booster” as standard procedure. I believe it’s the ‘Brake Booster Assy, w/Master Cylinder’ unit causing the issue, I do all my own repair work on my vehicles and I partially disassembled the booster/master cylinder unit, upon removing the cover for the circuit board control unit integrated into the assembly I discovered evidence of an overheated or corroded circuit board. The soldered pins for the main bus connecting the wiring harness to the circuit board showed possible charing and discoloration as well as very dull colored soldered joints. This was also observed at the bottom of the circuit board as well. After replacing both assembly units in the vehicle the brakes work flawlessly again. I was told by the parts salesman at the local Toyota dealership that he had been selling a lot of these replacement units lately.

Filed May 20, 2023 · Engine, Fuel system · OR

Hybrid battery overheats after an hour of driving at high speeds. Car battery shuts down and becomes immobile.

Filed Feb 21, 2020 · 1 miles · CA

Recurring "check hybrid system" issue = jov software update failedthis is my 2nd complaint (11298645)re. The non-safety of my prius. Dec 2019, the jov software update failed. I was lucky to be driving in a parking lot as otherwise I wouldn't be here writing to you. My car stopped working entirely & abruptly. I drove it only for 1.2 miles that day. It didn't go into a fail-safe driving mode & didn't go into neutral either. They're 3 witnesses. It got towed to toyota hollywood who accused the car's power loss on the regular battery. The bad overheated inverter caused it & drained the battery surely. Toyota's executive office send out a fts inspection who drove the car also to recreate the dtc code w/ tests & thereafter said it's safe to drive. False assessment. The hybrid warning msg appears again on january 16. I drove it only for 1.6 mi that day. I started my car, the warning msg remained on display until I drove it home for 1.6mi going 15mi/hr. The public knows: "the inverters have been overheating, causing the software that controls the vehicles to shut down the power or put the vehicle into what is known as a limp-home mode that is supposed to allow drivers to get to the side of the road safely." now, toyota culver city has my car since jan 18; they could only see a "low voltage battery" issue & aren't sure. ?toyota has found that in rare situations, the vehicle may not enter a fail-safe driving mode as intended,? The statement said. ?if this occurs, the vehicle could lose power and stall. While power steering and braking would remain operational, a vehicle stall while driving at higher speeds could increase the risk of a crash." what will it take for the largest auto manufactures in the world to replace my inverter? A crash. I hope not. Thank you for assuring safeness on the road. Sincerely, [xxx] redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6). *cc

Filed Apr 29, 2019 · Fuel system · CA

Please reference the los angeles times article of april 14, 2019: "after second recall, toyota prius electrical system is still overheating". My car has had the software updates, but is apparently still unsafe to drive. I am terrified that I could experience a "limp-home" situation while traveling at high speed on the local freeways. I am requesting that the federal safety agency aggressively pursue toyota to recall the affected cars and completely fix the problem by replacing the inverters.

Filed Oct 22, 2016 · Engine · 46,000 miles · MA

Drove over object. Pulled over right away. Object dislodged. Didnt see any fluid kept on driving. After 15 miles engine overheating light came on and pulled over immeditiately and turned off engine. Had car towed to nearest toyota dealer.now I m told that object tore a hole in radiator which caused all the fluid to leak out and caused engine to overheat. To the point of no longer working. What is the point of having a warning light that comes on when its too late to remedy the situation?