Steering Wheel Controls/Horn not working

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Jan 2, 2013 | 07:03 PM
  #1  
Hello,

I have a 2003 C240. The steering wheel controls and the horn have stopped working. I've checked all the fuses and still don't know why it doesn't work. Has this happened to anyone or does anyone know how to fix this? Thanks.
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Jan 2, 2013 | 09:20 PM
  #2  
Its mostly likely one of the harnesses in the steering column or a crimped wire in it.
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Jan 2, 2013 | 09:40 PM
  #3  
Thanks for your input phister. I've researched a little more and have been reading about it possibly being the clock spring.
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Jan 3, 2013 | 10:56 AM
  #4  
if you need help heres a page with all the parts and diagrams of the steering column

http://www.mymercedesparts.com/parts...w=21&maxRow=10
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Jul 15, 2013 | 10:44 AM
  #5  
Did you find out the solution to this issue? The right side on my c230 coupe is completely dead both phone and arrow buttons alongside with the horn is not working.
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Jul 19, 2013 | 02:16 AM
  #6  
Same problem; I fixed it on mine last weekend after reading this thread. The connector came off and had to solder it back on to the PCB:

https://mbworld.org/forums/c-class-w...-controls.html
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Mar 16, 2014 | 05:44 PM
  #7  
Problem !! Not working horn control panel and srs message
I car recently was repaired a new evaporator and another part for a/c was changed, now I have problems with control panel, the horn is not working and the air bag problems, plus a red light came up srs problems. Can you tell me what happen??/
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Mar 19, 2014 | 01:54 AM
  #8  
Not sure this is a related issue with the steering controls; unless they removed the steering wheel to carry out the repairs. Otherwise, it may have to do with the removal of the center console *not sure about the horn* but I have had the SRS warning light go off when installing a Head unit.
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Mar 20, 2014 | 10:17 AM
  #9  
if you look on in the world .org you will find instructions on how to repair the switches. fact is the solder joints go bad and you need to simply heat up the solder joint and put the switch back in and it will be fixed. I had the same problem and I was able to fix it in this manner. definitely not the clock spring. basically you remove the air bag / horn button and then remove the switches from the airbag module. it's not hard I did the whole job in about a half an hour to an hour since I didn't know what I was doing
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Mar 20, 2014 | 10:21 AM
  #10  
I was trying to say earlier benzworld .org<br />
<br />
Quote: if you look on in the w<br />
orld .org you will find instructions on how to repair the switches. fact is the solder joints go bad and you need to simply heat up the solder joint and put the switch back in and it will be fixed. I had the same problem and I was able to fix it in this manner. definitely not the clock spring. basically you remove the air bag / horn button and then remove the switches from the airbag module. it's not hard I did the whole job in about a half an hour to an hour since I didn't know what I was doing
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