Volvo V70 radio code

Is there a quicker way to input the unlock code into a V70 radio than
having to wait two hours with the ignition on? I thought I knew the code
but obviously didn't and now according to the manual I have to wait for
another two hours with the radio switched on, is the two hours cumulative
or do I have to do it all in one sitting?

 

I believe it has to be continuous, and there is no quicker way.

 

Arse. I thought you'd say that. Oh well that makes for an exciting two
hours sitting in the car listening to the radio ... oh no wait can't even
do that.

 

Assuming the car is in a safe place, I'm sure the radio wouldn't notice
if you went for a coffee break or watched a ball game or whatever.
If you have a second key, you could lock it up with that.

 

Spent a couple of hours reading a magazine in the car yesterday so all is
now sorted thanks.