1997 E420 Blower INOP

[BlackMagic528]

Hello, all.

The climate control fan on my mother's 1997 E420 is not blowing, no matter what setting the system is on. According to her, the fan did come on, briefly (like a few seconds) once after going over a bump, but has not operated since. Interestingly, this happened immediately after it got out of a body shop. We're not really willing to take it back there, either. Long story.

Anyway, I've been looking over some past threads (found through Google) and I'm beginning to think the problem may with with the regulator, but I was hoping for some confirmation of that suspicion. Also, where precisely is the blower motor on this thing? Behind the glove box? Under the dash?

Any thoughts on how to fix this? We're in Chicago, and I don't like the idea of my mother driving around in a car with barely any heat. Thank you in advance.

Kyle