the radio works but when i press the cd it shows a code er01 and it won't eject or nothing won't playing anything what can i do

 

One of the discs may be stuck. Look in the slot and you'll probably see a disc, try playing with it with a narrow object and see if it comes out. I usually get the CD out with a pen, which I usually have in the center armrest.

 

Had a similar problem when I first bought my CL-S. I put in a CD that I burnt on my home PC and it messed up my CD player. My radio worked but the CD player wouldn't play, eject, or allow another CD to be inserted. Tried removing power and re-initializing the radio (with the code) and that didn't solve it either.

There was not label on the CD so I suspect the format (the way i burnt it) messed up the drive somehow. Brought it to the dealer and they installed a whole new unit.