Yes - I recall that, and asking how it got corroded, and ignoring it, because I saw no signs of corrosion anywhere that I looked. And it was a 2007 XC90, so I didn't know whether it even applied to my P2. Also I assumed (wrongly) that you were referring to the connections at the main fuse panel near...

So what I saw in the 2006 were these pair of BFC's (Big Fat Connectors). Each had a pair of red 10-ish gauge wire. I think they bring power from the fuse panel beside the battery up to the the CEM, drivers door fuse panel, and under-hood fuse panels. The pic shows their location in my 2006, right un...

I sold it. As I was going through this, I was also keeping an eye out for a replacement vehicle, and came across a 2006 XC70 with under 100k, and super-well maintained. So I bought it. The buyer of the car in this thread was made aware of the issue - I even printed out a bit of this thread for him. ...

Yep - as stated about a half dozen times - all fuseboxes inspected thoroughly - all good...

If there's really two fuseboxes in the engine compartment, that totals 5, because there's also the cluster of 50A fuses back by the battery, which I have also checked. Maybe you're referring to an S70 or C70? (The V70 battery is in the back cargo area.) On my 2001 V70, I've not found two fuseboxes i...

I carefully checked all connections and fuses in all 4 fuse locations (under hood-both layers, drivers side, REM, and main fuses near battery). Are there more fuses in this car that I haven't found? So, I'm not sure what you mean by 'main bus' but I've been thinking along the lines you are and have ...

I disagree that it's the alternator. Even if the alternator died totally, I don't see how that'd cause a sudden electrical power loss, since the battery would have sourced power to all loads in the car for quite some time. I've spent a LOT of time studying the wiring diagrams, so if you can explain ...

So, here's the update. The issue has popped up 4 times. Each time, removing the battery cable basically 'reset' things back to normal. The issue hasn't occurred in the last 2 weeks over 400 miles of driving. The last thing I did was mentioned above - I removed and swapped the location of all the rel...

Hey any chance you've had any breakthroughs in the past few days? I have some very similar symptoms this morning. Right now my priority is just to get the car home, but then I think I will use your thread as a guide. Thanks! Your symptoms sound different. My issue always manifests as all the brake ...

OK, well I'm not going to be the noob that pops in with a problem, and never closes out the thread. But, I really don't have a resolution yet. Here's the entire mini-series: Summary: The car has had three occurrences of sudden electrical failure over the last month. These three instances were simila...