definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
34,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Toyota Prius lights problems

lights problem

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2004 Toyota Prius Owner Comments

problem #2

Nov 012009

Prius 4-cyl

  • 68,000 miles


About 40% of the time, my Toyota Prius doesn't want to stop or slow down when the brakes are applied. Under these conditions, I have to apply the brakes hard and then the car will slow down. It feels like the car wants to "run away" when the brakes are applied. It exhibits this behavior in many circumstances: Stopping at a stop light, slowing down on an expressway, or slowing down on a city street. Updated 11/23/09 the check engine light illuminated. The passenger front window switch wasn't opening or closing the window unless the master switch was used. The throttle body had to be cleaned. The fan belt and brake light switch were replaced. Updated 11/24/09 updated 01/06/10 updated 01/07/10.

- Miami Beach, FL, USA

problem #1

Apr 052007

Prius 4-cyl

  • miles
With light braking I can stop my 2004 Prius without ever illuminating the brake lights. This risks a rear end collision. The lights illuminate after the brake pedal has been depressed a little more than 1/2 inch. The service manager at my dealership claimed that there was no adjustment and would not take the car into the shop. An incident date, as required on this form, is not applicable. This is happening every time I brake.

- Denver, CO, USA

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