I have the single CD player. If there is a CD in the player and I have left the radio on, when I leave the car and put the key back on the CD player will come on each time.
What do you do to get the radio to come on when you leave the car and start it again?

 

Remove the CD

 

If it was on the radio when I last switched off, its on the radio when I next switch on - regardless of a cd in the slot...

 

Same here