I have a 2001 Ford focus Ghia 2L. While driving the offside rear window just dropped. Is it repairable or do I need a new unit?

Is this a real question? Holy moly...

You have screws on every corner of the panel, maybe one for the door handle. Take that off. You might have to take the plastic and foam out a little. This will give you access to the window. Best of luck to you.

stick some blue tack in tank

I presume there is a slippage in the drive of the window winder. Open carefully the window flaps, first of all look carefully as you press for the motor to function. when the grinding noise come on, slowly life up the base of the glass support to see if it is holding. If this works open out the mechanism, check the cords/ reel/ gear for fault and replace. Hope you get this right. Try with patience / caution. Hope my advice works . Good day

There is a little utility/tool that is on the internet (can be found with a bit of searching). You put your serial no. in and it gives you the correct code. I have tested on three of my own units and correct code each time, as per the issued radio passport. I will not say where on internet, as I agree with what "emissionwiz" stated about how do we know radio not result of illegal activities.

If there is no decal under the hood somewhere, start with the belt around the crankshaft, and then go flats to flats, ribs to ribs. You may have to try a couple of times, but you'll get it.

Can only find out that the hub needs to be tightened to
235 nm Dunno if this helps

what year is the car? joe

the key fob sounds like it might be sending a signal sometimes so take the battery out and see if there is any change.joe

hammer and chisel its spot welded on