Quote:
Originally Posted by busaboy
2004 SL55 in the USA with only 3800 miles that will not read any CDs in the CD0 slot in the Comand unit. Original owner says the unit worked when he originally bought the car. He says both audio and Nav disks were used and the total time the CD0 unit was used in the last 6 years was less than 1 hour.
I get a no CD is inserted message if I select CD0 when in CD mode. A few times I got a CD reading error message. The CD changer works OK.
If I press the NAV button and put in a new Blaupunkt DX Nav CD, the unit acts like no CD was inserted.
If I enable the Infos screen when in engineering mode while moving, the GPS line and Speed both say 0. How can I test the GPS electronics without a NAV CD? Is the Speed indicator 0 due to no GPS?
Dealer says there are no test CDs that I can buy to test the unit.
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Okay, there are test CD's you can buy. The part number for the diagnostic CD is W220 589 01 22 00
The fact that your system doesnt seem to read any disks though indicates a problem with the laser. You can try cleaning the lens with one of those Cd lens cleaners that has the small brushes on the disk. If you can get one which has cleaning fluid then applying a small amount of this to the brushes will help.