RoadVitals

2003 Toyota Prius Electrical Problems

Owner-reported complaints naming the electrical system, filed with NHTSA

Data refreshed

Electrical reportsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
13
Latest Jul 10, 2020
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
13%
of 99 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
0
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
1

What this page shows

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories. Every record below is an owner-reported complaint about the 2003 Toyota Prius submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 13 reports on file name it.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Owner reports naming electrical

Shown in the owner’s own words, exactly as filed

BrakesElectrical
Filed Jul 10, 2020

FOR NO APPARENT REASON WHEN DRIVING, THE EMERGENCY BRAKE WILL ENGAGE, WITHOUT PRESSING THE E BRAKE PEDAL. ALSO, INTERMITTENT ONCE CAR IS PARKED AND DOORS LOCKED, ALARM WILL JUST START GOING OFF FOR NONREASON.

NHTSA ID
11338658
Incident
Jul 10, 2020
Mileage
151,000 mi
ElectricalEngineFuel system
Filed Jul 31, 2017
1 injury reported

THERE IS NO THERMOSTAT GAUGE IN A 2003 TOYOTA PRIUS , THE CAR OVER HEATS AND YOU DON'T KNOW UNTIL YOUR IN THE MIDDLE OF TRAFFIC NEARLY GETTING KILLED. TOYOTA WAS CONTACTED, BUT SAY NOT A RECALL AND THEY DON'T HONESTLY CAR CAUSE CAR IS OLD . THAT'S NOT RIGHT , ANYTHING YOU STILL USE FROM CARS OR EVEN MEDICINE HAVE LATER COME BACK TO HURT OR KILLED PEOPLE. THERE IS NO HOT TO COLD GAUGE IN THE CAR , 2003 ONLY . I HAVE INVESTIGATED AND SEE PEOPLE PUBLISH ABOUT THIS BUT LET IT SLIP BY . I WAS DRIVING WITH NO INSTALLED GAUGE AND SURVIVED THROUGH MAKE A LEFT HAND TURN ON A STALLED VEHICLE THAT OVER HEATED AND WAS LATER CHECK BY TOYOTA TECHNICIANS THAT SAID F THERE WAS A THERMOSTAT GAUGE PROBLEM WOULD OF MOST LIKELY BE AVOIDED. SOMEBODY CAN'T KEEP OPEN AND CLOSING THE RADIATOR CAP CAUSE OF THIS MISSING GAUGE . OIL HAS DIPSTICK YOU CHECK !!! SAFELY TOO. NOT GOING FRY MY FACE OR BURN MY HANDS ON KEEP CHECKING THE RADIATOR. PLUS WITH A PROPER GAUGE YOU MIGHT KNOW IF YOUR CAR IS COOLED DOWN OR SAFER TO CHECK. TOYOTA HAD REFUSED TO ADDRESS OR CLAIM ANY ISSUES. CASE# [XXX]. PEOPLE LIVES ON AT STAKE CAUSE THEY WANTED TO A. SAVE MONEY B. DON'T KNOW HOW FORGET TO INSTALL THE PART FOR THE YEAR ON EVERY 2003 PRIUS !! PLEASE HELP , TOYOTA DOES NOT CAR ABOUT MY SAFETY OR ANYBODY ELSE SAFETY - [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ID
11011713
Incident
Jul 10, 2017
Mileage
123,200 mi
Driver assistanceElectricalOther / unspecified
Filed Aug 27, 2013

MY 2003 PRIUS (FIRST GEN, FROM JAPAN), HAS BEEN THRU A FEW RECALLS - 1 WAS TO SEAL THE BATTERY BETTER EARLY ON (04ISH), THEN IT WAS GIVEN NEW PINION SHAFT NUTS. LATEST ISSUE HAS BEEN AN ISSUE ALL ALONG, JUST NOT DIAGNOSED/FIXED TIL NOW. SOMETIMES THE 'CHECK ENGINE' LIGHT WOULD COME ON, WITH THE CAR/! /TRIANGLE GRAPHIC ON TOUCH SCREEN. THIS TIME IT DIDN'T GO AWAY. LONG STORY SHORT, IT WAS THE ELECTRIC WATER PUMP THAT NEEDED TO BE REPLACED. DEALER SAID IT WASN'T CYCLING PROPERLY, LEAKING ANTIFREEZE; ALSO A BIG HYBRID BATTERY ISSUE WAS SHOWING UP, BUT THEY SUSPECTED WHEN FIXING WATER PUMP IT MIGHT CLEAR UP BATTERY ISSUE. DID RESEARCH, FOUND THIS HAS BEEN A BIG ISSUE FOR A LOT OF PRIUS OWNERS. SAW THE CONSUMER REPORTS & THIS STORY, FROM A TOYOTA NEWS RELEASE. THE FOLLOWING IS EXACTLY WHAT I'VE EXPERIENCED, & MY CAR WAS PART OF THE PINION SHAFT NUTS/STEERING COLUMN RECALL, BUT NOT WATER PUMP RECALL!: "TOYOTA IS RECALLING 670,000 OF THEIR POPULAR PRIUS HYBRIDS IN THE US TO CORRECT TWO SAFETY ISSUES. THEY SAY ALL OF THE VEHICLES WILL BE INSPECTED TO SEE IF A PART IN THE STEERING SHAFT NEEDS TO BE REPLACED DUE TO AN ISSUE THAT COULD CAUSE EXCESSIVE WEAR. 350,000 OF THESE SAME PRIUS VEHICLES (FROM 2001-2010 IN JAPAN ) ARE ALSO BEING RECALLED TO REPLACE THE ELECTRIC WATER PUMP FOR THE HYBRID SYSTEM. TOYOTA SAYS THE PUMP COULD FAIL AND CAUSE THE HYBRID SYSTEM TO STOP RUNNING. THEY SAID ITS DEALERS WILL INSPECT & REPLACE ANY DEFECTS FREE OF CHARGE. RECALL NOTICES WILL GO TO OWNERS IN DEC. 2012. ABOUT 2.77M VEHICLES WORLDWIDE ARE AFFECTED."TOYOTA DID NOT PAY FOR MY REPAIR, $669; THAT WAS WITH A 15% OFF COUPON! I AM KEEPING MY RECEIPT. TOYOTA NEEDS TO INCLUDE MY VIN IN THE NEXT BATCH OF RECALLS FOR THIS DEFECTIVE WATER PUMP, WHICH HAS BEEN DEFECTIVE SINCE DAY 1, BUT A SLOW DIAGNOSIS, THAT MAY HAVE AFFECTED THE OVERALL FUNCTION OF THE HYBRID SYSTEM BATTERY PERMANENTLY. NO FUN! *TR

NHTSA ID
10537480
Incident
Aug 10, 2013
Mileage
115,000 mi
BrakesElectrical
Filed Jul 27, 2012

I TOOK MY CAR IN A WEEK BEFORE THIS INCIDENT BECAUSE I NEEDED SERVICE AND WAS GOING ON A TRIP TO SAN DIEGO WITH MY 5 YR OLD DAUGHTER. KEYES TOYOTA IN VAN NUYS DID EVERYTHING TO IT AND REPLACED MY FRONT BRAKES AND INSPECTED EVERYTHING INCLUDING THE OTHER BRAKES... SO YESTERDAY, IM ON THE FREEWAY AND SUDDENLY A PIERCING, LONG BEEP HAPPENS AND 2 WARNING LIGHTS COME ON. " BRAKE AND ABS" ... I'M THINKING " WHAT JUST HAPPENED! I JUST HAD MY CAR MADE PERFECT THE OTHER DAY!!?? .. AND THEN, NOT TWO MINUTES AFTER THOSE WARNING LIGHTS CAME ON, MY BRAKES COMPLETELY FAILED!! PEDAL TO THE FLOOR NOTHING! :-( ... I WAS SOOOOOO SCARED.... I PUT MY HAZARDS ON AND CREPT OVER TO FIND A SHOULDER .... I WEAVED OVER WITHOUT CAUSING AN ACCIDENT THANK GOD SO I GET TO THE SHOULDER THANKFULLY BUT IT'S A SHORT SHOULDER... AND IM PRAYING AS I ROLL TO A STOP .. I'VE BEEN BACK AND FORTH WITH THE DEALERSHIP AND TOYOTA CORPORATE THESE PAST 24 HOURS BECAUSE I SHOULD NOT HAVE TO PAY OVER $2000 FOR SOMETHING THAT IS THE MANUFACTURERS FAULT!!... I COULD HAVE DIED OR KILLED SOMEONE...WHAT IF MY DAUGHTER WAS IN THE CAR AND I WAS AT AN INTERSECTION SLOWING FOR A RED LIGHT!!?? OH MY GOD!... SOMETHING HAS TO BE DONE... I'M FULLY READY TO SUE TOYOTA...GO TO THE NEWS OUTLETS...LOS ANGELES TIMES...ANYONE WHO WILL MAKE THIS PUBLIC... NO ONE SHOULD DIE BECAUSE THEY ARE TRYING TO HELP THE ENVIRONMENT.... AND NO ONE SHOULD DIE BECAUSE A CORPORATION WON'T OWN UP! ..I'M PUTTING A STOP ORDER ON THE REPAIR TOMORROW MORNING....I'M HOPING YOU CAN HELP ME AND OTHERS WHO COULD POTENTIALLY BE FATALLY INJURED (OR THEIR CHILDREN) FROM AN ELECTRICAL SYSTEM THAT JUST FAILS! BOTH THE DEALERSHIP AND CORPORATE JUST SAID " WELL, THAT PARTICULAR PART ONLY HAS A 3 YR WARRANTY OR 36,000 MILES AND SO AFTER THAT IT'S THE OWNERS RESPONSIBILITY. REALLY? IT'S MY RESPONSIBILITY IF YOUR CRAZY FAULTY CAR KILLS ME OR MY CHILD? NUTS! *TR

NHTSA ID
10467898
Incident
Jul 25, 2012
Mileage
85,377 mi
ElectricalSteering
Filed Sep 14, 2011

2003 TOYOTA PRIUS. CONSUMER WRITES IN REGARDS TO RECALL NOTICE CONCERNING PINION SHAFT NUTS ON THE ELECTRIC POWER STEERING *TGW THE CONSUMER STATED THE RECALL WAS PERFORMED AT THE DEALERSHIP ON AUGUST 10, 2011. UPON LEAVING THE DEALERSHIP, WHEN THE CONSUMER ATTEMPTED TO USE THE HORN, HE DISCOVERED IT WAS NOT WORKING. THE CONSUMER RETURNED TO THE DEALER, TO INFORM THEM, THE HORN HAD BEEN DISCONNECTED OR MAYBE A WIRE HAD COME OFF. THE DEALER STATED THE RECALL HAD NOTHING TO DO WITH THE HORN. THE CONSUMER STATED THE HORN WAS WORKING PRIOR TO ARRIVING AT THE DEALER. THE CONSUMER THEN CONTACTED TOYOTA CUSTOMER SERVICE AND THEY CONTACTED THE DEALER. THE DEALER STATED IT WAS JUST A COINCIDENCE THAT THE HORN BROKE WHILE PERFORMING THE RECALL. ACCORDING TO THE SERVICE INVOICE, THE HORN AND CRUISE CONTROL SHORT POWER SPIRAL CABLE WAS BAD. *JB THE CONSUMER STATED THE DEALER REFUNDED HIS MONEY. UPDATED 09/23/11*JB CONSUMER'S ISSUE RESOLVED 12/6/11 *ET

NHTSA ID
10424915
Incident
Aug 10, 2011
ElectricalTransmission
Filed Feb 17, 2010

TL*THE CONTACT OWNS A 2003 TOYOTA PRIUS. WHILE THE CONTACT WAS DRIVING 5 MPH OUT OF A PARKING LOT THE VEHICLE SUDDENLY STOPPED ACCELERATING AFTER THE VEHICLE TRAVELED OVER A PATCH OF ICE. THE VEHICLE HAS NOT BEEN TAKEN TO THE DEALERSHIP AND THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGES WERE 150,000.UPDATED 03/30/10. *LJ UPDATED 09/28/10

NHTSA ID
10311313
Incident
Feb 15, 2010
Mileage
150,000 mi
ElectricalEngine
Filed Feb 10, 2010

WARNING LIGHT COMES ON AND MANUAL SAYS DO NOT OPERATE VEHICLE, PARK IMMEDIATELY. THIS HAPPENED ON MY 2003 TOYOTA PRIUS IN DECEMBER. FORTUNATELY THE DEALER WAS OPEN AND WHEN REPORTED SAID IT WAS NOT A BIG DEAL, THE CARE WAS DRIVABLE AND SHOULD BE BROUGHT IN FOR SERVICE. IN SERVICE FOUND MASTER WARNING LIGHT CODES P0300, 301, 302, 303, 304, -3191, P33101, C1202 THEN NOTED "FOUND WARRANTY ENHANCEMENT TO CLEAN THROTTLE BODY (EG9016.5 01.99). WAS NEVER NOTIFIED OF THIS ISSUE AND WAS PARKED IN DANGEROUS LOCATION WHILE ATTEMPTING TO ASCERTAIN WHAT STEPS TO TAKE IN LIGHT OF THE "DO NOT OPERATE VEHICLE" WARNING IN THE MANUAL. SAME SITUATION AROSE IN OUR 2002 PRIUS THIS DATE AND AWAITING RESULTS OF DEALER'S ANALYSIS (ALTHOUGH WHEN THE LIGHT WENT OUT THEY SAID WE COULD JUST AS EASILY CANCEL THE SERVICE APPOINTMENT). IN BOTH CASES SERVICE DEPARTMENTS SEEMED FAMILIAR WITH PROBLEM (AND MY SERVICE ADVISOR REFERRED TO IT AS A "SILENT RECALL".) *TR

NHTSA ID
10308477
Incident
Dec 19, 2009
Mileage
43,746 mi
ElectricalEngine
Filed Feb 11, 2008

2003 TOYOTA PRIUS WITH ENGINE PROBLEMS. CONSUMER STATES THAT THE TRIANGLE AND ENGINE LIGHTS WOULD ILLUMINATE UPON STARTING THE VEHICLE. MECHANIC STATED THAT THERE WAS OIL IN THE AIR INTAKE AND ON THE SENSORS. *KB THE CONSUMER STATED TWICE WHILE HIS WIFE WAS DRIVING, THE VEHICLE SHUT OFF, WHICH LEFT HER DRIVING WITH JUST THE ELECTRIC MOTOR. *JB

NHTSA ID
10218314
Incident
Jan 23, 2006
ElectricalEngine
Filed Feb 27, 2007

2003 TOYOTA PRIUS -- IN COLD WEATHER THE CARS COMPUTER DOES NOT ACT PROPERLY AND WILL SHUT DOWN THE ENGINE. *NM

NHTSA ID
10183673
Incident
Jan 18, 2007
Mileage
108,000 mi
Electrical
Filed Feb 21, 2007

2003 TOYOTA PRIUS HAD 12V BATTERY REPLACED UNDER TOYOTA TSB EL014-03 "BATTERY CAPACITY IMPROVEMENT" INSTRUCTIONS WERE OMITTED AS WELL AS NOT FOLLOWED. CAR WAS DRIVEN FOR APPROX. 2 WEEKS WITH BATTERY NOT VENTED OUTSIDE PASSENGER COMPARTMENT AND NOT PROTECTED FROM DAMAGE BY HEAVY OBJECTS IN TRUNK. WAS CORRECTED BY ME PRIOR TO FURTHER OPERATION. POTENTIAL FOR A FIRE STARTING IN THE TRUNK OF THE CAR DUE TO HYDROGEN GAS BUILD UP FROM CHARGING/DISCHARGING IGNITING THE TRUNK LINING, PASSING UP THE PLASTIC VENTILATION SYSTEM FOR TRACTION BATTERY AND FUSING HIGH VOLTAGE TRACTION BATTERY CABLES TOGETHER WAS THERE PRIOR TO CORRECTING VENT SITUATION. AWAITING RESPONSE FROM LOCAL DEALER AND WOULD LIKE TO KNOW IF THERE ARE SPECIFIC REGULATIONS ABOUT VENTING LEAD ACID BATTERIES OUTSIDE PASSENGER COMPARTMENTS OTHER THAN FEDERAL MOTOR SAFETY ADMINISTRATION 393.30 BATTERY INSTALLATION. *NM

NHTSA ID
10183195
Incident
Feb 2, 2007
Electrical
Filed Oct 9, 2006

COMPUTER FAILED. *JB

NHTSA ID
10170259
Incident
Dec 18, 2005
Mileage
103,000 mi
ElectricalTires & wheels
Filed Dec 30, 2005

TOYOTA PRIUS HYBRID 1. TIRE BLOW OUT WITH THE RIGHT PSI AND CLEAR BEAUTIFUL DAY. DEALER WILL NOT WARRANTY OR CHANGE TIRE. 2. THE CAR STOP AND STARTED RUNNING ONLY ON ELECTRICAL SERVICE. CALL TOYOTA DEALER AND THEY ASK ME TO START THE CAR THREE TIMES AND IT WILL GO AWAY. I DID IT AND DROVE TO THE DEALER THEY EXPLAINED TO ME THAT THE HUMIDITY WAS CAUSING THE PROBLEM. THIS HAD HAPPEN ABOUT FOUR TIMES AND EVERY TIME THE HUMIDITY WAS HIGH BUT THIS IS AND INCONVENIENCE NOT JUST TO ME BUT MY WIFE. ONE OF THIS DAYS THE EASY FIXING WILL NOT WORK THEM WHAT? *JB

NHTSA ID
10146610
Incident
Jul 18, 2005
ElectricalEngine
Filed Oct 15, 2005

2003 TOYOTA PRIUS GAS ENGINE STALLED, WARNING LIGHTS CAME ON ALL OVER THE SCREEN, AND IT WOULD ONLY DRIVE ON "BATTERY POWER." AFTER STOPPING, I TURNED THE CAR OFF BUT IT WOULD NOT RE-START IMMEDIATELY. AFTER A FEW TRIES AND THEN WAITING, THE GAS ENGINE STARTED WHEN I TURNED THE KEY. DURING THE TIME IT WAS RUNNING ON BATTERY, AIR CONDITIONER WAS BLOWING HOT AIR. AFTER GAS ENGINE RE-STARTED, AIR CONDITIONER BLEW COLD AIR. TOYOTA SERVICE SAID THEY HAD NEVER SEEN ANYTHING LIKE WHAT WAS ON THE SCREEN THEY DIAGNOSED AND SAID IT WAS THE COMPUTER AND ORDERED PARTS. THEY WERE ALSO THINKING THE BATTERY HAD SOMETHING TO DO WITH IT. 1. THEY MAY NOT HAVE DIAGNOSED MY CAR CORRECTLY SINCE THEY DO NOT KNOW ABOUT THIS RECALL, AND MAY NOT FIX IT CORRECTLY (INCLUDING PUTTING GREASE ON CERTAIN WIRES). AND 2. THAT NEWS REPORTS IN THE U.S. SAY IT IS 2004 AND 2005 PRIUSES WHICH ARE AFFECTED, SO 2003 OWNERS MAY NOT GET LETTERS TO TAKE THEIR CAR IN ON THIS RECALL. THIS COULD RESULT IN PEOPLE BEING KILLED. I WANT SERVICE DEPT TO UNDERSTAND THAT PRIUS 2003 OWNERS MAY NOT BE NOTIFIED BECAUSE TOYOTA MAY NOT BE AWARE THAT THEY ALSO HAVE THE PROBLEM. THEY SHOULD INFORM TOYOTA THEY HAVE A 2003 IN FOR REPAIR WITH SAME PROBLEM AS 2004-2005 CARS. I AM CONCERNED THEY MAY NOT DO REPAIRS ON MY CAR IN ACCORDANCE WITH WHAT IS SPECIFIED ON THE RECALL EVEN IF I DID NOT GET A LETTER. THIS UPSETS ME AND IT ALSO SCARES ME. I AM SURE TOYOTA WOULD NOTIFY SERVICE & OWNERS IF THEY WERE AWARE IT ALSO AFFECTS 2003 PRIUS'. SO I WANT YOU TO MAKE THEM AWARE OF IT AND BE SURE THEY SEND THE 2003 OWNERS LETTERS TOO. *NM

NHTSA ID
10139774
Incident
Oct 12, 2005
Mileage
43,912 mi

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

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Data on this page last refreshed .