Hi, I’m having an issue with my DRL on my 2013 RX350. They stopped working and I did notice I had a tail light out. I fixed it with the exact same bulb and that’s working but no DRL’s. I checked the forums and some issues were lights out, emergency brake on slightly, fuses and relays. I checked them all out and also made sure they were turned on in the nav also. For the fuse and relay I just swapped them and still nothing. They work when I turn on my lights I can see them working, but not any other time. Wish I could fix them as I like having them! Any help would be appreciated, thanks for your input, Gerry

 

The turn signal stalk control may be broken. That is my best suggestion at this time. I do not know how to test it aside from getting a used one on eBay or a junkyard. I am sure the same turn signal light switch stalk is used on many Lexus and Toyota models.
A quick eBay search found several for $30 and up. Search 2013 Lexus RX350 steering column switch. Some state listings 2013-2015 model years.

 

You can turn the DRL lights off with the lights switch, so you need to leave the lights switch in the "Auto" position.
If you turn it all the way to "OFF" the DRL will be off.
So just leave it in "Auto"

 

I hope that’s not it, doesn’t seem like it would be too easy to change! But thank you!

 

I have the switch in the Auto mode, but they still don’t work!