AWD Failure on Suzuki Swift 1.3L

[JackFrost]

I hope I am sharing this in the right section, so I’m usually tinkering with Audi quattros, but my girlfriend’s Suzuki Swift 1.3L decided its AWD doesn’t feel like working, right as we’re in the snowy Swiss mountains, on vacation. The front wheels are spinning like crazy, while the rear just watches. Anyone know if AWD failures are common on this model? And where the hell do I even start troubleshooting, and where can I find a good manual? Appreciate any advice, and I’ll check back tonight after some winter “drifting.”