Wow! Thank you for all of this information. I actually understand it. I will follow up and let you know how it all goes!

Hello,
I have searched this forum for any information on how to replace the driver door wiring harness on my 2007 XC90. Previously I posted about fixing it and got some help figuring out how to solder the broken/disconnected wires back into the harness, but unfortunately the wires keep breaking due ...

Fixed. It was definitely a two-person job! I unscrewed the star bolt from the door holder to allow the door to open a bit more and get a little extra working room. Turns out this was enough, so I didn’t have to take the door panel or the door itself off. In the process of wiggling the wire harness ...

BINGO. One of the green wires is broken. I didn't even have to turn the signal on to figure it out ... as soon as I popped the rubber cover off and pulled out the wire harness, it was obvious that one of the green wires was broken in such a way that the ends could still connect if they were in a ...

Thank you, I will check those links and try to do a bit more debugging. I will follow up!

Ok, I went outside, got in the car, turned the car on, then flicked the stalk down to test the left turn signal. It was blinking fast as expected. Then I got out, leaving the driver door open, pulled cargo fuse 2 out, no change (is this normal? Maybe I don't know how fuses work).

But then! I got ...

Thank you for your reply. When you say "stop lights" does that also apply to turn signals? I am going into my garage to check #2 in the cargo fuse box but wanted to make sure that's what you meant.

Hello all,
I joined this site hoping one of you experts can help me! I searched for "xc90 turn signal" in hopes that someone had seen/solved this issue but couldn't find anything.

When I signal to turn left, my dashboard message center says BULB FAILURE and the driver's side front turn signals ...