SL/R231 Voice Command & hands free calling microphone not working

06-19-2021, 02:45 PM

#1

julrick001

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2013 Sl550

Voice Command & hands free calling microphone not working

I have a 2013 Sl550 ... all of a sudden no on can hear me on phone calls. I then realized voice command also not working. When I select the speak button on the stirring wheel, voice command comes up as it should, but its not hearing me and eventually "cancels". Is there a fuse that can be checked? I've already booted the command system to no avail.

Any ideas would be greatly appreciated. Thanks in advance!

Last edited by julrick001; 07-01-2021 at 11:21 AM.

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03-16-2022, 07:43 AM

#2

DCF

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13 SL63, 07 SL550, 16 Escalade, 11 C70

I notice I have the same problem with a 2013 SL 63. Were you able to resolve the issue? Anybody else have an idea?

Thanks,

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03-16-2022, 01:35 PM

#3

Bay Leaf

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SL 350 R231

Try removing the negative battery lead for 10/15 mins and see if that has re set it.

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03-16-2022, 10:05 PM

#4

julrick001

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2013 Sl550

Quote:

Originally Posted by DCF

I notice I have the same problem with a 2013 SL 63. Were you able to resolve the issue? Anybody else have an idea?

Thanks,

Unfortunately, no. I've solved a number of issues from suggestions on this forum, but this one seems to not have been solved in the past by folks in the forum. I'll try the battery disconnect suggested by Bay Leaf, though I'm not optimistic that it will help as it's not a setting issue that needs to be reset per se. I'll post the results when done.

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Bay Leaf (03-17-2022)

03-17-2022, 01:32 PM

#5

Bay Leaf

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SL 350 R231

Yes give it a try my friend, you've nothing to loose .

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03-17-2022, 03:23 PM

#6

julrick001

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2013 Sl550

Does it matter which battery?

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03-19-2022, 10:17 PM

#7

julrick001

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2013 Sl550

Quote:

Originally Posted by Bay Leaf

Yes give it a try my friend, you've nothing to loose .

Disconnected both batteries.... no luck.. ugh....

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03-22-2022, 01:30 PM

#8

julrick001

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2013 Sl550

Update on Microphone not working with voice command or phone:

Ran diagnostic in engineering menu. Both Microphone 1 and Microphone 2 show Fault: Microphone Circuit open error. Codes 94B7 and 94B8 (Mic 1 and 2) Still researching to determine next troubleshooting step. Can't seem to find fuse chart, or determine where voice/microphone control module is located.

Last edited by julrick001; 03-22-2022 at 01:34 PM.

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crconsulting (03-22-2022)

03-22-2022, 01:37 PM

#9

crconsulting

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2020 GLC300 -2013 Sl550 - 1997 SL600

Quote:

Originally Posted by julrick001

Update on Microphone not working with voice command or phone:

Ran diagnostic in engineering menu. Both Microphone 1 and Microphone 2 show Fault: Microphone Circuit open error. Codes 94B7 and 94B8 (Mic 1 and 2) Still researching to determine next troubleshooting step. Can't seem to find fuse chart, or determine where voice/microphone control module is located.

Ever have any electrical work or interior work done on that car? Radar detector install, dash repairs, things like that.
(no fuse btw)
this issue may also be related:
https://mbworld.org/forums/e-class-w...y-hear-me.html

Attached Files

LI82.70-P-064726_Ver_5.pdf (45.1 KB, 113 views)

Last edited by crconsulting; 03-22-2022 at 01:52 PM.

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03-22-2022, 01:52 PM

#10

julrick001

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2013 Sl550

Quote:

Originally Posted by crconsulting

Ever have any electrical work or interior work done on that car? Radar detector install, dash repairs, things like that.

this issue may also be related:
https://mbworld.org/forums/e-class-w...y-hear-me.html

No, I haven't had any electric work or work of any kind done on the car. Everything else on the car works flawlessly. Bought the car in 2020 with 9K miles on it... has 22K now. This is the only issue I've had with it.

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crconsulting (03-22-2022)

03-22-2022, 01:55 PM

#11

crconsulting

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2020 GLC300 -2013 Sl550 - 1997 SL600

Quote:

Originally Posted by julrick001

No, I haven't had any electric work or work of any kind done on the car. Everything else on the car works flawlessly. Bought the car in 2020 with 9K miles on it... has 22K now. This is the only issue I've had with it.

Yeah, thats a bummer...

Have look at those links and attached XENTRY "tips".
Not much consolation.

Last edited by crconsulting; 03-22-2022 at 01:58 PM.

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03-22-2022, 04:47 PM

#12

crconsulting

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2020 GLC300 -2013 Sl550 - 1997 SL600

Quote:

Originally Posted by julrick001

Can't seem to find fuse chart

Forgot I had this. (don't pay attention to the car pictured. It's R231 part number)
I would look at the radio fuses just in case.
See attachment:

Attached Files

R231 FUSE .pdf (1.12 MB, 80 views)

Last edited by crconsulting; 03-22-2022 at 04:49 PM.

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06-17-2024, 04:51 PM

#13

paw777

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R231

Quote:

Originally Posted by julrick001

No, I haven't had any electric work or work of any kind done on the car. Everything else on the car works flawlessly. Bought the car in 2020 with 9K miles on it... has 22K now. This is the only issue I've had with it.

Hi! Ever get this sorted? Thank you

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06-17-2024, 05:28 PM

#14

julrick001

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2013 Sl550

Quote:

Originally Posted by paw777

Hi! Ever get this sorted? Thank you

I took it to Mercedes and they reset the system and now works....so have no idea what was really wrong with it..... sorry....

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06-18-2024, 10:27 PM

#15

sacho1979

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glc 200

Quote:

Originally Posted by julrick001

Update on Microphone not working with voice command or phone:

Ran diagnostic in engineering menu. Both Microphone 1 and Microphone 2 show Fault: Microphone Circuit open error. Codes 94B7 and 94B8 (Mic 1 and 2) Still researching to determine next troubleshooting step. Can't seem to find fuse chart, or determine where voice/microphone control module is located.

module is under driver’s seat