CD changers, command units, voice control units, PSE units, and Tele Aid units are prone to failure, especially in early models.
Car Problem Reports
Mercedes-Benz S430 CD Changers and Command/Voice Control/PSE/Tele Aid Units May Fail
Mercedes-Benz S430 Problem
Average Mileage: 86,700 mi (10,000 mi - 145,000 mi)
Visitor, 2006 Mercedes-Benz S430, 60,000 mi
CD Changer went bad 1st. It stopped working and then we began to have issues with the Main Head Unit in the dash. It turned on and off intermittently and finally went out completely. We have yet to get a proper diagnosis for this issue.
Nav unit will not boot up. Mercedes dealer wants to replace the whole unit for $4500. I don't think its the unit but a computer glitch.
Visitor, 2000 Mercedes-Benz S430, 80,000 mi
Radio and CD not stop of working. I cann't to find solution. Please your help.
At times the CD changer reports a error of "no cartridge" and it cannot load CD. Other times it works fine.
Visitor, 2006 Mercedes-Benz S430, 59,000 mi
Radsio Command Unit Died
radio/navigation stopped working. blank screen. occasionally it will start up and work. who repairs these? firstname.lastname@example.org
Visitor, 2005 Mercedes-Benz S430, 83,000 mi
COMMAND screen flashes on and off, radio goes on and off all by itself, no way to turn it on or off.
Looks like it needs a re-boot, but there are no directions on how to do it.
Tried different ignition keys-no effect.
Replaced an alternator just a few weeks ago.
My unit would turn off and on, and I reported the problem with my first A service. They could not get it to duplicate. I again reported the problem and was told there was a recall on the instruments. The instruments were fine, the unit still turned off and on at will.
The problem was diagnosed when warranty expired.
Just Quit working. No warning . Just went.
Visitor, 2000 Mercedes-Benz S430
The CD changer went out about 3-months ago. the radio would not turn on at the time the CD changer was going out.