Replacing the headlamp - some notes

You should replace both headlight bulbs.

The bulbs dim as they age, and the other bulb may be close to failing as well.

Also, never touch the glass bulb with your fingers when handling the bulb. The oils left on the bulb will create a hotspot that will lead to premature bulb failure. If you do accidentally touch the bulb, clean it gently with a soft cloth with some rubbing alcohol on it.

 

The passenger (right) side headlight bulb can be replaced by simply removing the air intake snorkel, using a socket, end, or hand wrench. Then reach in and rotate the bulb holder 1/4 ccw and remove. The wiring is long enough to get it out. Then disconnect the electrical plug with a screwdriver to fully remove the bulb and socket. If you do the more accessible driver's (left) side first you then know how it all fits. I did not have to remove the cooling reservoir. In fact I did both bulbs parked in front of the auto supply.

 

Hi guys, new to me 12 v (lowercase v for the Prius v wagon) Two with 36K miles LH low beam out. Bulb number H11

Has anyone tried an LED replacement for the H11?

 

Anyone have an idea on why, over last six months, four H11 low beam bulbs, on driver side have blown out. I've replaced each bulb myself and have made sure they are properly seated and have used electrical grease when changing them. Also, checked circuit breakers and they appear okay.

 

Will just comment that the "super bright" halogen bulbs tend to have very short lifespans. My experience is that the regular halogens last longer.
Look for any loose connections and or that you are getting the socket seated fully. Bulbs hate vibration and loose connections.

 

Have you cleaned the glass on the bulbs with 99% rubbing alcohol so there is no hot spot?
Also do a Google review of the bulbs that you installed, some are not very good and depending where whey were bought they could be counterfeit.

 

As a matter of interest, what did you use the "electrical grease" on ?

 

On/in the connectors that go on the bulbs, that's my guess.

 

Yes, used the grease on the electrical connection and yes, made sure to avoid getting any on actual bulb. As to using the "brighter" halogen bulbs yes, I tried them at first but have gone back to OEM, which are now on both sides. I did not clean the bulbs with the rubbing alcohol but will try it; I've tried handling the bulbs carefully because of the potential hot spot problem from any oil but never know may have touch them inadvertently. The idea about the bulb going out do to vibrations may be next thing to check. Thanks for the replies.