2003 Toyota Prius Problems

What owners report

Owners of this model year most often describe steering trouble: a shaking or shuddering steering wheel, usually at low speed during a turn and often worse in cold weather, with some reports of the power assist cutting out or the wheel failing to return to center. Brake complaints, mainly the ABS warning light with a soft or long-travel pedal, also appear regularly, and these two make up the bulk of the reports.

1. 1
   Steering

   Steering wheel shakes or shudders at low speed

   • 19 complaints (19%)
   • median 89,330 mi at 8.2 yrs old (18 state mileage)
   • owner-quoted repair $2,500 (median of 5 quotes)
   • filed 2008–2022

   Owners describe the steering wheel shaking or shuddering, most often when starting out, backing out of a driveway, or making a slow turn, and several say it is worse in cold weather and eases once the car warms up. Some report it worsening over time or occurring while driving. Dealers variously replaced the rack and pinion or steering box, blamed temperature, or could not find a cause; owners commonly mention quotes in the low thousands of dollars for the repair. Mostly reported between roughly 40,000 and 175,000 miles, frequently in cold weather and at speeds under 30 mph.

   Recall 11V3040001 related service bulletin

   What to check: Ask whether the steering rack or electric assist has been replaced, and whether the steering recall work was performed. During a cold start, drive slowly in a tight turn and note any shudder or noise from the column.

   2 excerpts from owner complaints in NHTSA records

   “I currently own a 2003 Toyota Prius with about 76,000 miles. I am active duty military currently stationed in germany. I have encountered a steering problem where the steering wheel shutters and shakes as if you are driving on rough terrain. It usually occurs between 5 MPH and 30 MPH while in a turn. When this occurs you temporarily lose control of the steering and potentially, the car. …”

   NHTSA complaint #10243603, filed 2008-09, 72,000 miles

   “I have a 2003 Prius with 100k miles. At about 95k miles I began to notice an anomaly in the steering. When I back out of my driveway to my right the steering wheel shudders. This happens more frequently when it is cold. The shudder happens occasionally other places, usually at low speed. I have read the other reports and worry about the more severe failures others have reported. My dealer quoted me $2300 to repair the problem which he described as the steering box . …”

   NHTSA complaint #10280653, filed 2009-08, 95,000 miles
2. 2
   Brakes

   ABS light on and a low or soft brake pedal

   • 14 complaints (14%)
   • median 85,377 mi at 7.4 yrs old (13 state mileage)
   • filed 2009–2020

   Owners describe the ABS light coming on with a warning tone while the brake pedal goes soft or travels further than usual, and some say the pedal sometimes sinks to the floor. A recurring theme is poor braking over bumps or slippery surfaces, with the car not stopping as expected; repairs have included master cylinder, brake hoses and controller work, and in some cases the fault could not be reproduced. Reported across the mileage range, from near-new to about 177,000 miles, often on uneven or wet roads.

   4 related service bulletins

   What to check: Ask whether the master cylinder or brake controller has been replaced and whether a brake fluid flush was done. Test the pedal for firmness and brake over a rough patch or wet surface at moderate speed.

   2 excerpts from owner complaints in NHTSA records

   “A number of times when I brake on uneven roads, the brakes on my 2003 Prius feel as if they aren't working. They have always caught almost immediately, so that I haven't thought of reporting the problem until the recent reports on the newest Prius model. Incident date is the most recent, even though the problem has been there since I bought the car.”

   NHTSA complaint #10305814, filed 2010-02, 90,000 miles

   “Abs brake light comes on and beeps, and brakes become squishy on my 2003 Toyota Prius. Toyota dealer does not know what the problem is. I have spent hundreds of dollars on diagnostics, but the problem keeps happening. I have noticed similar complaints on the internet regarding this ABS light problem, and squishy brake problem. Toyota dealer informs me that they have heard nothing of this problem from the Toyota motor corporation.”

   NHTSA complaint #10336005, filed 2010-06, 177,000 miles
3. 3
   Steering

   Steering assist drops out or wheel locks in a turn

   • 14 complaints (14%)
   • median 69,677 mi at 7.2 yrs old (14 state mileage)
   • owner-quoted repair $2,250 (median of 6 quotes)
   • filed 2007–2020

   Owners report the steering becoming very heavy or the wheel locking, sometimes with a power steering warning light or message appearing. Several describe the wheel not returning to center after a left turn and having to force it back or restart the car, and a few say it happened after steering recall repairs had been done. Dealers sometimes could not reproduce the fault, and some found cracks or a failed rack. Reported from very low mileage up to about 176,000 miles, typically at low speeds during turns.

   Recall 11V304000

   What to check: Check that recall 11V304000 was completed, then test slow full-lock turns in both directions and watch for the power steering warning light or a heavy wheel.

   2 excerpts from owner complaints in NHTSA records

   “I have a 2003 Toyota Prius. When I made left turns the steering wheel would stick and I would have to jerk it back to straighten out the car. I took it into the shop and the steering system had to be replaced. The cost of the repair was approx. $2800. I am making a report in the event that there are other Prius' that have had this problem.”

   NHTSA complaint #10311624, filed 2010-02, 27,770 miles

   “I had a 2003 Toyota Prius which I was very happy with. Unexpectedly, and without warning, the steering column locked while I was driving the car and I was unable to navigate the car. Fortunately, I was in my neighborhood and was able to stop the car in a neighbor's yard without incident. I had the car towed to my dealer and learned that the steering woud need to be replaced for about $1500 or more. Since the car had almost 120,000 miles on it, I chose not to repair it. …”

   NHTSA complaint #10307446, filed 2010-02, 118,000 miles
4. 4
   Engine cooling

   Engine stalls or drops into battery power

   Mentioned in 8 of 60 sampled complaints

   Owners report the gasoline engine shutting off while driving, warning lights filling the display, and the car continuing on battery power only, sometimes failing to restart right away. Some describe stalling uphill or at low speed and the air conditioning blowing warm during the event. Dealer responses ranged from replacing the hybrid computer, mass air flow meter, fuel tank and hybrid battery to cleaning the throttle body or finding nothing. Reported from about 18,000 up to 150,000 miles, at varied speeds and sometimes on inclines.

   4 related service bulletins

   What to check: Ask for service records on the throttle body cleaning, hybrid battery and engine computer. Note whether the check engine or master warning light has been coming on, and have any stored codes read before purchase.

   2 excerpts from owner complaints in NHTSA records

   “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. …”

   NHTSA complaint #10139774, filed 2005-10, 43,912 miles

   “After a series of problems with the Prius engine the local Toyota dealer informed me that I needed to have the car's transmission replaced. Naturally the vehicle is no longer covered by its warranty. Back ground: 2003 Prius, odometer reading 116,289. On 12/22/2008, I started the car and the check engine light appeared. I was towed to the dealership. The dealership informed me that the gasoline engine shut down and the battery ran out of power. The dealership could not reproduce the problem. …”

   NHTSA complaint #10214314, filed 2008-01, 116,289 miles
5. 5
   Tires

   Premature or uneven tire wear

   Mentioned in 4 of 60 sampled complaints

   Owners describe original tires worn to the cords or completely worn rear tires well before expected life, with one report of tread separating from a rear tire. Several ask whether the battery pack weight over the rear axle contributes to rear alignment drift and inner-edge wear. Mostly reported under 25,000 miles, with some later reports around 59,000 miles.

   1 related service bulletin

   What to check: Have the rear alignment checked and inspect the inner edges of both rear tires, which are easy to miss from outside.

   2 excerpts from owner complaints in NHTSA records

   “I have a 2003 Toyota Prius. I had my first flat tire at approximately 18,000 miles. Second flat tire came 20,000 miles. When I took the car to the tire store I was told that Prius have major problems with tires. They indicated that both back tires were completely worn and needed to be replaced. I spoke to the service manager for Toyota dealership and she admitted that there was an issue but that it had been rectified. She replaced my last existing tire at approximately 25,000 miles. …”

   NHTSA complaint #10140265, filed 2005-10, 18,000 miles

   “2003 Toyota Prius was proceeding west on I-40 near knoxville, tn when the tread separated from the left rear tire and wrapped itself around the axle causing the driver to lose control. The car veered to the left then to the right, hit a guardrail and then hit a semi head-on. The vehicle was totaled, the driver survived with a concussion and a head wound.”

   NHTSA complaint #10233346, filed 2008-07, 59,000 miles

Buying note. This model year draws more steering and brake reports than anything else, so have the electric steering assist, rack and ABS system checked and confirm the steering recall was performed before buying. The hybrid system and cooling reports are fewer but worth covering with a pre-purchase scan for stored codes and a look at service records.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.