UPDATE: 2008 XC70 Ignition/starting issue

[stheemka]

My 2008 XC-70 recently developed a weird intermittent start issue. Most of the time, you get in, insert the key fob, depress the brake and then the start button, and it starts no problem. But periodically, for no reason we can detect, when you do all this and then press the start button, you just get a click, then some flashing of various indicators, "interlock" being one of them, and the starter never turns over. Just a click and the instruments kind of go crazy. Sometimes you can click it again and take out the fob, and sometimes you click it again and still nothing, but it won't release the fob. It is like some part of the car thinks it is running or something. We also get a rotten egg small, so maybe the fuel system is operating somehow too while this is going on?

Sometimes it snaps out of it after you let it sit for a bit, but last night no amount of trying got it to start. I tried again this morning, though, and it was fine.

We thought for a while that it was the key fob (one worked and the other didn't, it seemed like) so we changed the batteries in both, and while it was fine for a week or two, it started doing this again yesterday, neither fob worked.

UPDATE 2/17/23: We seemed to have gone months without this being an issue, but this morning it happened again. Put the key in, and everything goes haywire. Here is a video:https://photos.app.goo.gl/LCukaCCptF2tPD1w9

Any ideas for even where to start? Thanks!

[rockhead1002]

Did you ever figure out the issue??