You could try if you have some tools and a little time.
assitant
I'm not sure.  Can you open up the dashboard?
assistant
The window in my car won't roll up. What could be wrong?
user
The remote control doesn't seem to be working. It's possible that a wire or cable is broken inside the car. If the car was recently repaired, it might be covered under warranty.
assistant
Okay, so it could be a wire or cable.
user
Right. Are you near a car dealership or a local garage that can help?
assistant
So you don't think I can fix it myself?
user