Usually for the 5000 and 6000 you just get a set of removal tools, insert them into the holes on either side of the front panel and then pull the radio out.

But I've got a feeling that the 4500 is the awkward one. Isn't it in three sections, or something?

I've had a very quick look on YouTube and I believe it's this one:

www.youtube.com/watch?v=_IOiEoUjYo8

www.youtube.com/watch?v=RIRSxVDNsOA

Now worked out how to undo the front panel and get it loose, but the

The middle heater control won't let go? Can't see how it's supposed to

Be removed? Motor speed wire block unplugs. screen, foot demist selector unplugs

No idea with heat settings one.

It's a very poor design not like old ford radios