Problems · by component

2004 Toyota Prius vehicle speed control problems

52 owner complaints to NHTSA about the 2004 Toyota Prius cite vehicle speed control, 9% of all 610 complaints for this model year. NHTSA also lists 1 recall on this component.

Complaints
52
9% of all complaints
Crashes
10
Reported by owners
Fires
0
Reported by owners
Injuries
9
Reported by owners
01 —Owner reports

What owners say about the vehicle speed control

Verbatim from NHTSA complaints, newest first
“I need your help to get Toyota to fix 2 items: -ABS Accumulator: I understand Toyota at one time had a recall on the ‘ABS Accumulator’, that may have expired. At that time, I did not have any issue, nor was I aware of the recall. Now the ‘ABS Accumulator’ has gone out and is really hurting the braking. I had to get new brakes & they get locked because of the ABS malfunction. It is an expensive item – more than the cost of the car. I intend to keep the car for a long time, if Toyota can help me get the ABS Accumulator fixed? -MFD: The Multi-Functional Display (MFD) in the middle of the dashboard, has gone blank. It used to just partially blank out before, but now the whole screen is blank all the time, making it very hazardous to drive. Obviously, there is nothing I have done & it is a manufacturing defect, because it should last the life of the car. Please have Toyota fix the 2 problems (ABS & MFD). All requests to Toyota have gone unfulfilled. Your help is needed & will be greatly appreciated.”
Owner complaint to NHTSAFiled Apr 2, 2022Vehicle speed control, Unknown or otherODI 11459332
“I AM THE OWNER OF A 2004 PRIUS. AFTER BUYING MY CAR USED 2 YEARS AGO I NOTICED THAT ONCE IN AWHILE THE DISPLAY, INCLUDING FUEL CONSUMPTION, SPEEDOMETER, ODOMETER, AND MORE, WOULD NOT LIGHT UP AND THAT THE CAR WOULD NOT TURN OFF EASILY SEVERAL TIMES I HAVE BEEN IN SITUATIONS WHERE I HAVE LITTLE GAS AN AM UNABLE TO SEE MY GAS GAUGE OR KNOW HOW FAT IAM GOING ON THE HIGHWAY. I UNDERSTAND THAT THIS WAS ONCE COVERED BY TOYOTA UNDER THE WARRANTY EXTENSION BUT IS NOT CONSIDERED A SAFETY CONCERN. THE WARRANTY EXTENSION IS EXPIRED. IN WHAT UNIVERSE ARE A FUNCTIONING FUEL GAUGE AND SPEEDOMETER NOT CONSIDERED A SAFETY CONCERN? I AM ALSO CONCERNED THAT THIS WILL DETERIORATE FURTHER AND CAUSE AN ACCIDENT.”
Owner complaint to NHTSAFiled Apr 22, 2019Electrical system, Vehicle speed control, Fuel/propulsion systemODI 11202903
“THIS OCCURRED TO ME YESTERDAY WHILE TRAVELING 60 MPH IN 94 F HEAT ON I-76 E JUST BEFORE THE 676 / 76 SPLIT. I WAS TRAVELING IN THE FAR LEFT LANE WHEN THE CAR SUDDENLY LOST POWER. LOOKING AT THE DASH I NOTICED THE SHIFTER HAD MOVED ITSELF INTO N (NEUTRAL), IT WOULD NOT MOVE BACK INTO DRIVE. I APPLIED MY HAZARD LIGHTS AND BEGAN FORCED MY WAY RIGHTWARD ACROSS THREE LANES TO THE SHOULDER, SPEED RAPIDLY DECREASING AND SEEMINGLY MORE SLUGGISHLY THAN A NORMAL COAST. I THINK THE EMERGENCY BRAKE WAS AUTOMATICALLY BEING APPLIED OR I WAS FIGHTING A BRAKING SYSTEM. ONE LANE FROM THE SHOULDER, A UPS TRUCK WAS HEADED FOR ME FROM BEHIND. LUCKILY, HE WAS ABLE TO SWERVE INTO THE SHOULDER AND PASS ME THERE AS HE COULD NOT MOVE LEFT INTO OTHER TRAFFIC. WE ONLY NARROWLY AVOIDED A COLLISION WITH ME OR THE ELEVATED BARRIER ON THE SIDE OF THE ROAD. I HAD ONLY 10 MPH LEFT AND NO ABILITY TO REDIRECT MY VEHICLE. ONCE ON THE SIDE OF THE EXPRESSWAY, I WAS ABLE TO GOOGLE THIS WELL-KNOWN ISSUE WITH THE VEHICLE. I LET THE VEHICLE COOL OFF, TURNED OFF THE AIR CONDITIONING, THOUGH DIDN'T WANT TO RISK TURNING THE VEHICLE OFF. I WAS CONCERNED I WOULD HAVE TO WAIT UNTIL NIGHTFALL TO GET BACK INTO…”
Owner complaint to NHTSAFiled Jul 12, 2018Vehicle speed control, Engine, Fuel/propulsion systemODI 11111093
“SPEEDOMETER & OTHER CONTROL INFORMATION DISPLAY WENT BLANK. PULLED OVER TO SIDE OF ROAD BUT UNABLE TO TURN OFF ENGINE. CONTACTED TOYOTA & WAS TOLD PROBLEM IS KNOWN & WARRANTY EXTEND TO 9 YEARS & UNLIMITED MILES. HOWEVER, MY VEHICLE IS OLDER THAN NINE YEARS, SO I MUST PAY ESTIMATE $1400 TO FIX & CAR WILL BE UNAVAILABLE FOR ESTIMATE 2 WEEKS. THE VEHICLE IS UNSAFE TO DRIVE, PRIOR TO THIS KNOWN PROBLEM OCCURRING CAR WAS OPERATING PERFECTLY ( AVERAGING 50 MPG PER TANK OF GAS, DOCUMENTED). THIS APPEARS TO BE A SAFETY PROBLEM THAT WAS KNOWN BY THE MANUFACTURER, HOWEVER THEY SEEMS TO BE TRYING TO HIDE THIS BY MAKING THE STATISTICAL ESTIMATE THAT BY EXTENDING THE WARRANTY THE MAJORITY OF THESE CARS WOULD BE OFF THE ROAD AND THEIR LAWYERS & LEGAL INSURANCE WOULD COST LESS THAN THE FEW HUMANS KILLS AFTER THIS ARBITRARY 9 YEAR RISK PERIOD. I COULD HAVE BEEN KILLED AS A RESULT OF THIS FAILURE! FORTUNATELY I WAS NOT, HOWEVER I AM LEFT WITH A VEHICLE THAT IS UNDRIVEABLE (WITH NO WARNING!) AND CAN ONLY BE REPAIRED BY TOYOTA AT A COST I AM NOT ABLE TO AFFORD!”
Owner complaint to NHTSAFiled Jul 9, 2015Electrical system, Exterior lighting, Vehicle speed controlODI 10733039
“2004 TOYOTA PRIUS. CONSUMER STATES UNINTENDED ACCELERATION *TGW THE CONSUMER STATED THE SUDDEN ACCELERATION HAPPENED THREE TIMES, OVER A SIX YEAR SPAN. HE MANAGED TO PUT THE VEHICLE IN NEUTRAL, COAST TO THE SIDE OF THE ROAD, AND TURNED THE VEHICLE OFF. ONCE THE VEHICLE WAS RESTARTED, ALL WORKED FINE. THE CONSUMER STATED A FEW WEEKS AGO HIS VEHICLE WAS ABOUT TO REACH 300,000 MILES, AS HE REACHED FOR HIS CAMERA, HE REALIZED THE ODOMETER NEVER WENT PAST 299,999 MILES. HOWEVER, WITHIN FIVE MILES, THE VEHICLE SUDDENLY LOST POWER BRAKES, THE AIR CONDITION STOPPED WORKING, THE HYBRID DRIVE SHUT OFF AND THE FAN FOR THE HYBRID BATTERY CAME ON, AS WELL AS YELLOW AND RED LIGHTS APPEARED ON THE DASH. ALSO, TWO WARNING GRAPHICS APPEARED ON THE NAVIGATION SCREEN, ONE INDICATING TROUBLE. THE CONSUMER PULLED OVER, AND SHUT THE ENGINE OFF. HE THEN RESTARTED THE VEHICLE AND EVERYTHING WENT BACK TO NORMAL. IT APPEARED THAT BY SHUTTING OFF THE ENGINE AND RESTARTING IT, CAUSED THE MAIN COMPUTER REBOOT. THE CONSUMER STATED IT CONTINUED SEVERAL MORE TIMES, UNTIL HE ARRIVED HOME. THE DEALER INFORMED THE CONSUMER THE VEHICLE WAS A LARGE COMPUTER, AND WHEN ONE COMPONENT STOPS WORKING,…”
Owner complaint to NHTSAFiled Feb 14, 2012Electrical system, Vehicle speed controlODI 10447642
“WHEN AMBIENT TEMPERATURE IS COLD, SOMETIMES DASHBOARD LIGHTS AND SPEEDOMETER DO NOT COME ON WHEN THE CAR IS STARTED. CAR RUNS BUT WITH NO INSTRUMENT PANEL. SOMETIMES WHEN THE CAR IS IN THIS STATE THE CAR CANNOT BE TURNED OFF BY PRESSING THE START BUTTON. CAR CAN ONLY BE TURNED OFF BY PRESSING AND HOLDING THE START BUTTON DOWN FOR SEVERAL SECONDS, AND EVEN THIS DOES NOT ALWAYS WORK. THIS PROBLEM HAS BEEN GETTING WORSE OVER TIME. TOYOTA DEALERSHIP REFUSES TO INVESTIGATE THE PROBLEM, BUT IT IS DOCUMENTED IN THEIR WARRANTY REPAIR T-SB-0172-09 COMBINATION METER INTERMITTENT DISPLAY BULLETIN. INSTEAD, THE DEALERSHIP TRIES TO SELL US A NEW CAR! *TT”
Owner complaint to NHTSAFiled Jan 19, 2012Electrical system, Vehicle speed controlODI 10444588

Showing 6 of 52 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 4, 2026NHTSA vehicle page
02 —Related recalls

1 recall on this component

Vehicle speed control: accelerator pedal

Free remedy

TOYOTA IS RECALLING CERTAIN MODEL YEAR 2004-2010 PASSENGER VEHICLES. THE ACCELERATOR PEDAL CAN GET STUCK IN THE WIDE OPEN POSITION DUE TO ITS BEING TRAPPED BY AN UNSECURED OR INCOMPATIBLE DRIVER'S FLOOR MAT.

Vehicle speed controlReported Oct 5, 2009NHTSA 09V388000
Data from NHTSA Recalls API · synced Nov 4, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.