The contact owns a 2007 Toyota Prius. While driving 35 mph, the driver's side headlight flickered. There were no warning indicators illuminated. The contact also mentioned that the headlights had to be manually turned off and on to function normally. The vehicle was taken to an independent mechanic where the contact was informed that the headlights needed to be replaced. The vehicle was repaired, but the failure persisted. The manufacturer and dealer were not made aware of the failure. The failure mileage was unknown.

- Lawrenceville, GA, USA

The contact owns a 2007 Toyota Prius. While driving unknown speeds, the headlights failed. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the issue. The failure mileage was 117,000.

- Granite City, IL, USA

The contact owns a 2007 Toyota Prius. The contact stated that the headlights randomly shut off while driving. The vehicle was repaired by the dealer, but the specific repairs were unknown and the failure recurred. The dealer was unable to diagnose the cause of the failure. The manufacturer was made aware of the issue. The approximate failure mileage was 5,000.

- New Town , CT, USA

While driving to the store one evening, the headlights suddenly flickered and went out. I turned the light switch off and on then they went back on. Ever since this the lights(driver side) go off and usually come back on after turning the light switch on and off. No resolution to this after contacting Toyota since I appear to not be under warranty.

- Indiana, IN, USA

While driving the headlights will shut off. Sometimes the drivers side would go out. Sometimes the passenger side would go out. Sometimes both headlights will go out. If you turn off the headlights and turn them back on they will work for various amounts of time. Dealer mechanic states this is an extremly common occurance with this vehicle. Repair cost was quoted at approx $600 to replace the headlights and that possibly this could not fix the problem and could need further repairs but this is where they start with this known issue.

- Canal Winchester, OH, USA

Headlight on driver side intermittently goes on and off (mostly stays off) and has been doing this for 60,000+ miles (I have 127,000 miles on it now). I got quoted a huge amount to replace the light - $100+ for the light and one hour of labor. Ridiculous! I see that many more have had this same problem and I just think Toyota should do something regarding this obvious defect. So, decided to do this official complaint. I should have done this a long time ago! it is very dangerous driving around with one headlight but who is to say the problem would fix itself even if I get the light replaced. Something is terribly wrong!

- Penn Valley, CA, USA

Passenger headlight went out while driving. When I went to replace it the next day, the light was working. Today (Dec 30, 2011) problem occurred again.

- Bloomfield, MI, USA

Hid light randomly go out. Sometimes the driver side, sometimes the passenger side...sometimes both. They usually come back on by turning them off and back on at the switch. Dealer quoted $700 per light to fix. Ridiculous for early failure of a "upgraded" light option that we had to pay extra for when we purchased the car.

- Dallas, TX, USA

Carlos collado, et. Al. on behalf of themselves and all others similarly situated vs. Toyota motor sales, U.S.a.. Inc..a California corporation: Case# CV10-3113-R & #cv-10-3124-R. the consumer owns a 2007 Toyota Prius. The case involved 2006-2009 Toyota Prius vehicle owners losing one or both headlamps while driving at night.

- Closter, NJ, USA

I have brought this vehicle to the Toyota dealer four times in this past year for intermittently working headlights. One or the other front headlight turn off without warning. When the headlights are (both) turned off then on, they usually, but not always, both come back on. The dealer is clueless even when problem is demonstrated to the head of the service department. Based on a review of internet chat groups, this seems to be a well known and documented problem, including a class action law suit filed earlier this year (collado et al V. Toyota motor sales).

- Juneau, AK, USA

Headlights randomly goes out while driving. When headlights out, interior lights (lighting of dashboard, etc.) continue. If you turn lights off, then on again, headlights work. Does not happen every time.

- Canoga Park, CA, USA

The contact owns a 2007 Toyota Prius. The contact stated that when driving at various speeds, the headlights would intermittently fail or activate independently. The vehicle was taken to a dealer where they replaced the bulbs yet the vehicle continued to experience the headlight failure. The vehicle was not further repaired. The failure mileage was approximately 10,000. Updated 09/28/11 the consumer stated one of the headlights was replaced under warranty. After the warranty expired, the other headlight started to fail. Updated 10/07/11

- Issaquah, WA, USA

2007 Prius headlight failure - passenger side headlight goes out frequently. By turning lights off and back on it stays on for a while. I can't reproduce the problem when I want to. Looking at consumer complaints it seems to be a wide spread problem and very expensive to replace bulb which doesn't help the problem. Major safety issue at least that Toyota is just brushing aside. I am not a satisfied Toyota customer by all means.

- Twin Falls, ID, USA

After 20K miles the headlights need to be replaced at a cost of over $600. Headlights intermittently go out and come back on. Sometimes passenger side only, sometimes both lights dim then come back up. Turning the headlights on and off seems to correct the issue.

- Chicago, IL, USA

2007 Toyota Prius touring edition hid headlights turn off randomly while driving with the headlights on. I turn off the headlights and turn them back on and they come back on for a variable time before going off again.

- Belcamp, MD, USA

The contact owns a 2007 Toyota Prius. The contact stated while both high intensity headlights were illuminated they would shut on and off intermittently. The dealer replaced both headlights, but the failure recurred within 10,000 miles. The manufacturer was notified, but did not offer any assistance. The failure mileage was 38,000 and the current mileage was 100,000. The VIN was unavailable.

- Davidson, MI, USA

The contact owns a 2007 Toyota Prius. The contact stated that the headlights would fail intermittently for a period of two months before becoming inoperable. The vehicle was taken to the dealer for the failure and the dealer wanted to change the bulb. The contact did not allow them to complete the repair. The contact stated that when the failure occurred, if he would switch the headlight off and on, it would work so he did not believe the failure was caused by the bulb itself. The vehicle was not repaired. The VIN was unavailable. The failure mileage was 28,000 and the current mileage was 30,000. Updated 02/23/11 the consumer stated the head lights would fail intermittently. Updated 05/04/11

- Springfield, IL, USA

2007 Toyota Prius. Consumer states problem with headlight the consumer stated quite frequently and for a long time, one of the hid headlights would go out completely when the headlights were on. Sometimes, it would be the driver side and sometimes the passenger side. The consumer stated if he turned the headlights off and then back on again, the problem would temporarily resolve itself only to happened again at a later time.

- Marinette, WI, USA

Toyota Prius 2007. Headlights intermittenlty go out. Both lights go out on their own.

- Folsom, CA, USA

The contact owns a 2007 Toyota Prius. The contact stated that the headlights shut off intermittently. There were no warning lights prior to the failure. The dealer inspected the vehicle and stated that they could not find anything wrong with it. The VIN was not available at the time of the complaint. The failure mileage was 130000 and the current mileage was 141000.

- San Jose, CA, USA