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2012 Toyota Prius Fuel System Problems

4 owner-reported fuel system complaints from NHTSA data

4
Complaints
Apr 2016Oct 2020
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (4)

mediumFUEL/PROPULSION SYSTEM
Filed: Aug 2022

I was driving my 2012 Prius on the highway at around 55 MPH. The Hybrid System Warning came on and the car lost all power and immediately began to coast. I was fortunate not to have been in or caused an accident but cars behind me had to swerve to avoid hitting me. I was able to coast to a middle median lane. After waiting 15-20 minutes, the car never regained power. We were finally able to push it off the road and into a parking lot. It never regained power.

NHTSA #: 11477997
mediumFUEL/PROPULSION SYSTEM
Filed: Oct 2020

WHILE DRIVING IN INTERSTATE TRAFFIC THE CAR LOST POWER AND WOULD ONLY GO 11MPH. WHEN I GOT TO A SAFE PLACE TO PULL OVER THE HYBRID SYSTEM SHOWED FAILURE AND SEVERAL OTHER WARNING LIGHTS. THE CAR HAD A PREVIOUS RECALL FOR POWER MANAGEMENT COMPLETED IN 4/2019. THIS IS AN INVERTOR FAILURE

NHTSA #: 11366871
mediumFUEL/PROPULSION SYSTEM
Filed: Apr 2016

I WAS DRIVING THE 2012 PRIUS ON A DOWNHILL PARKWAY AT ABOUT 40 MPH WHEN THE WARNING LIGHT CHECK HYBRID SYSTEM CAME ON. WITHIN 10 SECOND, THE VEHICLE TOTALLY LOST POWER. IT AUTOMATICALLY SHIFTED INTO NEUTRAL. THERE WAS NO BACK UP FAIL-SAFE/LIMP HOME MODE. FORTUNATELY THE CAR WAS GLIDING DOWNHILL BY GRAVITY AND EVENTUALLY WAS STEERED INTO A DRIVEWAY. THEN IT REFUSED TO GO ON READY OR DRIVE MODE. ON THIS SATURDAY AFTERNOON THE CAR HAD TO BE TOWED HOME. IT HAD TO BE TOWED AGAIN TO THE DEALERSHIP FOR SERVICE THE FOLLOWING WEEK. IT TOOK THE MECHANIC TWO DAYS TO MAKE A DIAGNOSIS THAT A FUSE ON THE MAIN DRIVE BATTERY HAD BLOWN. ANOTHER DAY WAS SPENT WAITING FOR THE PART. THE DEALERSHIP CANNOT GUARANTEE THAT THIS EVENT WILL NOT HAPPEN AGAIN. I CONTACTED TOYOTA USA. AN AGENT NAMED MICHAEL WAS COURTEOUS ENOUGH TO LISTENED TO ME AND GAVE ME A CASE NUMBER 1604142245. TO ANYONE WITH COMMON SENSE, THIS TOTAL LACK OF AN EMERGENCY ALTERNATIVE PROPULSION SYSTEM FOR EVEN A CHEAP CAR IS UNACCEPTABLE. THE DEALERSHIP CANNOT EVEN COME UP WITH A PLAUSIBLE EXPLANATION AS TO WHAT MAY HAVE CAUSED THE FUSE TO BLOW. WAS IT OVER HEATING? WAS THERE A SHORT IN SOME INTERNAL BATTERY CELLS? THIS PAST WEEK, I NOTICED THAT THE CHARGING PART OF THE OPERATION NO LONGER CAN FULLY CHARGE THE BATTERY TO THE FORMER 11.9 MILE RANGE. IT ONLY CHARGES UP TO 9.8 MILES. THIS IS A SUDDEN LOSS OF 2 MILES OF CHARGE. I SUSPECT THAT SOME LITHIUM CELLS HAVE BEEN DAMAGED AFTER THE INCIDENT. I ALSO SUSPECT THAT THERE MAY BE OTHER ISSUES AS WELL SUCH AS SOMETHING WRONG WITH THE INVERTER MODULE RELATED TO A RECALL ON OTHER MODELS OF PRIUS DURING MY SEARCH FOR AN ANSWER. I NEED ASSURANCE FROM SOMEONE THAT THIS VEHICLE IS NOW SAFE TO DRIVE. BESIDES THE CASE NUMBER FROM MY COMPLAINT TO TOYOTA USA, AAA HAS RECORD OF MY RECENT TOWINGS ON 04/09/16 AND ON 04/12/16.

NHTSA #: 10860857
mediumFUEL/PROPULSION SYSTEM
Filed: May 2015

I WAS STOPPED AT A RED LIGHT ON A HILL. WHEN THE LIGHT TURNED GREEN, I STEPPED ON THE GAS WITH NO RESPONSE. THE CAR SLID BACK AND I BRAKED. THE PANEL LIGHT AFFIRMED THAT THE CAR WAS SUPPOSED TO BE IN DRIVE. YET THERE WAS NO RESPONSE AT ALL. THE CAR SEEMED TO BE IN NEUTRAL. I PUT THE BLINKERS ON AND THE CARS BEHIND ME PASSED. THE PANEL LIGHTS AND RADIO WERE ON ALONG WITH THE BLINKERS. I TURNED THE IGNITION OFF AND THEN TURNED IT ON AGAIN. IT WORKED WITHOUT A PROBLEM. I CALLED THE DEALER WHO STATED HE HAD NO IDEA WHAT HAPPENED AND THERE WAS NOTHING HE COULD CHECK. I HAVE DRIVEN THE CAR TO VARIOUS HILL TOPS AND STOPPED. THE PROBLEM DID NOT REPEAT ITSELF. IS THIS CAR SAFE TO DRIVE? IS THERE A WAY TO EVALUATE THE TRANSMISSION?

NHTSA #: 10717858

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