Have a 2004 RX330. While driving to work this morning, I turn on the high beams. High beam turned on momentarily, and then went out. High beam indicator was on. Further check revealed that the DRLs are out. I will check blubs and fuses tonight, but would appreciate any advice you can give me.

Thanks,

Art

 

Probably a fuse. Chances both high beam 9005 bulbs going out at the same time is rare. The DRL uses the 9005 high beam bulbs, so if no high beam you also have no DRL.

 

My understanding is that the left and right high beam bulbs, form a series circuit in DRL position. This makes them run at half voltage and the intensity of light is reduced.

Check fuses, then each bulb.

Salim

 

Interesting, I had removed one high beam bulb and still had the opposite DRL light turn on.

 

^^ It does not seem like a series circuit then.

Salim

 

You know what, I can't be sure anymore. I remember I wanted to disable my DRL and was playing with removing fuses and removing one bulb and neither worked out for me. My info is too and based off memory and can't be reliable anymore I don't have the car anymore so I can't verify. I used to remember everything I did to my cars but I guess I'm getting old

 

First off, thanks to all that replied.

This is one of those problems were you cannot ignore the obvious. Fuses were good and voltage was present. Turns out that both bulbs blew. Unusual to say the least, but I'm guessing that when the first bulb blew it may have caused a slight surge that blew the other.

Thanks Again,

Art