Hi MB World!
My 99 SLK 230 had to be jump started from sitting for several weeks. The radio MUTED displayed.

Is their a button for turning off the radio MUTED!!

I've disconnected the ground from the battery & left the car sit overnight.
Entered the radio code & the radio displayed the saved chanels but no sound. I can hear the thump from the speakers when the radio is powered. The MUTED display returned after turning the radio off & on.

Stock MB Bose radio, cd changer,phone, "phone not enabled"

How can I remove all power to resit the memory in the radio?
Question also listed in SLK 170 thread.

Stuart

 

hmmm, the clk320's have a a mute button.

dont know about the slk's, but... try pressing that button...

sry if that doesnt help any.

 

TKS for looking K K

Well I have read the operation guide from front to back, but no mention of a mute button. The only button that might be close is the "*" noted as a function button, has no effect.

Stuart

 

I have the same problem on my '99 SLK230. I was searching for a solution but to no avail.
I can't believe that there are only two of us out there with this problem?

I just turned on my radio one day and the "muted" showed up on the LCD display. Mine had nothing to do with disconnecting the battery.

After a coupld of days with it displaying that, I now have tried to disconnect the battery but also to no avail. It asks for the code, which I input, and it shows a radio station display for about 1-2 seconds then displays "muted". I believe it has something to do with the MB original StarTac phone that no longer works because it is analog but I don't know how to get the radio to work again. I have removed the phone from the connection but it still displays "muted"

Any info or direction would help,
TIA,

 

Does either car have Tele-Aid?

 

MBTech is suggesting that if the cars have tele-aid, the system may have been accidentally activated, which would mute the radio. The older, analog tele-aid systems no longer work because the frequencies they used to operate on were reassigned to other uses. It may be necessary to have them disabled via STAR.

 

Sometimes the tele-aid goes into tele-aid runaway...pretty much the control unit gets a mind of it's own, and will mute the radio. On some 2000 and up which are on the d2b ring, you can just remove it from the optical loop. However on 99 I remember them not being on the optic loop, so you would need to disconnect it, and code the vehicle via sds as mentioned.

 

How do you know if the car has TeleAid?

I am hoping for a "shadetree" fix, like disconnecting something or such, not giving my hard-earned cash to the lackluster techs at my not-so-local MB dealership.

 

Do you have a sos button?

 

No, I have a '99 and I don't think I've ever seen an SOS button on any of the '99's I've been in...but that's only three.
I think there is a mute wire on the connector on the back of the radio but I don't know which one it is. Perhaps someone has a wiring diagram for the '99 with a BOSE,AM/FM,Cassette,trunk-mounted CD changer radio that could show which wire is the "mute" wire?

 

Here's the info on my connectors on the radio rear, if this helps sort this out or if this rattles anybody's thought process. Thanks in advance !!

Pin/Colors
A1 - Green/White
A2 - Yellow/Green
A3 - Empty
A4 - Red/Green
A5 - Blue/White
A6 - Grey/Blue
A7 - Tan/Green SPOTS
A8 - Brown

B1 - Empty
B2 - Empty
B3 - Yellow
B4 - Yellow/Brown
B5 - Blue
B6 - Blue/Brown
B7 - Empty
B8 - Empty

C1 - Empty
C2 - Empty
C3 - Empty
C4 - Blue/Black (x 2 wires connected in same hole)
C5 - Black
C6 - Brown
C7 - Empty
C8 - Empty
C9 - Empty
C10 -Empty

The car has a BOSE system, as it says BOSE on the speakers behind the seats.

 

Hello all,

Has the "muted radio" issue been resolved and if so, how?

 

im having this issue on my 2005 c class. please help?

 

I'm having the Tele Aid Muted issue as well. Has anyone gotten a fix for it? My battery died a few times when I left the car sitting for months without running it. I'm not sure if that has anything to do with this message, but I can't use the radio and really would like to. MB dealership wants $100 just to look at it, regardless if they find a solution or fix. would love some assistance.

 

Well!
If this helps sort this out or if this rattles anybody's thought process. Thanks in advance !!
A1 - Green/White
A2 - Yellow/Green
A3 - Empty
A4 - Red/Green

B1 - Empty
B2 - Empty
B3 - Yellow
B4 - Yellow/Brown


C1 - Empty
C2 - Empty
C3 - Empty
C4 - Blue/Black

 

Which car is this from?

If the radio says "Tele-Aid Muted", it must be from a misbehaving Tele-Aid unit as mentioned earlier in this thread. Just get rid of that unit or at least remove the wire to the mute line (if it mutes the radio this way).

For other cases, locate the mute wire (behind the radio or the amplifier) and monitor the signal level. It could be a bad old phone control unit (not the cradle/adapter).