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Old 06-15-2015, 12:05 PM
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Comand knob problem

 
Old 08-08-2014, 11:15 PM
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C250 CGI
Update, mine C250 CGI (inline 4) also broken, 4 years 3 months....
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Old 08-13-2014, 12:44 PM
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C250 CGI
Hi all, update here. Mine last for 4 years and 4 months and the scroll died.

Fortunately the link below saved my wallet (someone shared at here and thank to him)
http://www.benzworld.org/forums/gene...-problems.html

My local dealer said it cost MYR2300 (Malaysia Ringgit, equivalent to USD740) without installing. I was able to repair it myself although it really don't seems that easy as compare to Video. I spend only RM11.50 (to buy the epoxy glue, equivalent to USD3.70) to repair this thing, but you sure need more patient than this.

Anyhow thank to the author who record this. I save plenty of money!
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Old 09-21-2014, 06:25 PM
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2009 C300, 2007 S550
I opted to just replace the part since it lasted 4 years. Got it from http://www.oediscountparts.com for $177.00 (part# 204-870-06-79)

Thanks for posting that video (and if the person who made the video reads this board, big thanks to you!)

I had the part out and swapped within 10 minutes And that includes being careful and cleaning as I put it back together, it seriously was quick to do.
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Old 10-05-2014, 09:56 AM
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2011 glk
Thumbs up comand knob

3 years 11 months and rotation of control knob quit. 2011 glk seems like its coman. Thanks to md world found that link on how to repair it. Basic tools, common sense, and of course patients. I plan on doing it soon. Car is great just had to put bridstones on and brakes all the way around, very easy. Went with high grade ceramic pads almost stopped brake dust.
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Old 12-06-2014, 02:25 PM
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C350
I just replaced my command knob, and I think I took me all of 10 minutes. This video is a HUGE help. Very easy to follow. In fact, it was so easy I'm thinking about having a go at actually repairing my broken knob.
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Old 12-19-2014, 08:26 PM
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2009 c300
navigation control knob 2009 C300

My knob also stop scrolling after 5yrs. All other functions work. I repaired mine from a Utube video. The problem is the knob shaft inside the unit has broken if half. To fix it you must remove the unit from the console and disassemble it completely. I watched the Utube video and it was excellent.

good luck.
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Old 05-14-2015, 11:32 AM
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GLK 350
The rotary axis may be broken. The attached links showed how to repair it by glue. The page text is in Chinese, but the pictures shows the steps to find the broken neck, which is the weak section for torsion force.

http://club.autohome.com.cn/bbs/thre...0153753-1.html
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Old 05-16-2015, 09:39 PM
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GLK 350
Open the box, get out the axis, you will find the weak neck position, it is between the metal and plastic transition section, only four points contact works for torsion force flow, poor!!!!

Glue it with A+B glue, then it works! Today I repaired my GLK 350, 2012, 75,000km, successful! The turning function comes back!
Attached Thumbnails Comand knob problem-20150516_191050.jpg   Comand knob problem-20150516_185920.jpg   Comand knob problem-20150516_185950-c.png  
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Old 06-01-2015, 03:40 PM
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2011 GLK350 failed at 4yrs 2 months

My comand knob has also failed to work when rotating. I called my dealer and Mercedes head quarter. Both were of know help. What's really troubling is the knob is rarely used. We predominantly use the steering wheel buttons for navigating the radio and only use the knob for GPS entries. So with minimal use, now I'm forced to buy parts for a poorly designed product and either do the shaft repair service myself or purchase a new knob that may have the same issue.

How is Mercedes able to not recognize this trend and provide owners with real solutions?
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Old 06-19-2015, 05:47 PM
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c200 estate (W204)
I also had the same problem a few weeks ago in my 2010 C200. After a few hours of research, it took half a day to fix it myself and that included the time it took for the glue to set. I decided that I was not going to pay an exorbitant amount to a dealer to fix a problem which obviously is as a result of poor design. I would encourage anybody who has this problem to go ahead and try the fix as it is not so difficult.

These 2 links were very helpful:


Goodluck

Last edited by nwachy; 06-19-2015 at 05:51 PM.
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Old 07-27-2015, 04:40 PM
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Mercedes Benz C300 4Matic Sport Sedan
Hey Guys, new here since I just bought a 2009 C300 4Matic Sport Sedan and was playing around with the features and such.

I noticed that the scroll wheel wasn't working when I rotate it and thought it was literally meant to function as is like that until I googled and stumbled upon this thread and a few others.

My question is, how easy or hard is it to fix this yourself? I tend to like to fix things myself but have never really tried with something of this magnitude. And I sure as hell am not bringing it to an MB dealer when I called and they said they would like to do a DX on it first to see whats the main issue which costs $200+.

I saw the videos on youtube and was wondering, how long do you have to wait for the epoxy to set and dry? Are there any major $$$ risks associated with attempting to fix this yourself.
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Old 07-27-2015, 04:50 PM
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W204 2008 C350
I paid $207 including tax and shipping (part itself was $180) for a new one and replaced mine altogether. The hardest part was removing the old one without damaging the wire. I ripped mine out and called it a day.
As for repairing the part itself, I'd assume once you get everything out safely, it's not so bad. Just a matter of applying the epoxy to the right areas. IT's good practice to let epoxy cure for 24 hours before use. Especially with moving parts.
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Old 07-27-2015, 04:58 PM
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Originally Posted by illlojik View Post
I paid $207 including tax and shipping (part itself was $180) for a new one and replaced mine altogether. The hardest part was removing the old one without damaging the wire. I ripped mine out and called it a day.
As for repairing the part itself, I'd assume once you get everything out safely, it's not so bad. Just a matter of applying the epoxy to the right areas. IT's good practice to let epoxy cure for 24 hours before use. Especially with moving parts.
Yea I figured once its out, the rest would be sorta easy, but knowing me I might break something and it would cost much more $$$ to fix.

I am thinking about just replacing the part itself altogether.

May I ask did you order Part: 204-870-06-79 from parts.com or the other site listed above?

How long did it take you to install the new replacement part? And when you said you "ripped" your wires out, did you literally do that with no damage? I'm just trying to find the fastest and safest way to fix this issue.

Also would this work on my 2009 C300 4Matic Sedan?

Sorry for so many questions, I did read through the thread, but I wanted to be sure and specific about the answers. Thanks again guys.
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Old 07-27-2015, 05:01 PM
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W204 2008 C350
Originally Posted by gnueliafnak View Post
Yea I figured once its out, the rest would be sorta easy, but knowing me I might break something and it would cost much more $$$ to fix.

I am thinking about just replacing the part itself altogether.

May I ask did you order Part: 204-870-06-79 from parts.com or the other site listed above?

How long did it take you to install the new replacement part? And when you said you "ripped" your wires out, did you literally do that with no damage? I'm just trying to find the fastest and safest way to fix this issue.

Also would this work on my 2009 C300 4Matic Sedan?

Sorry for so many questions, I did read through the thread, but I wanted to be sure and specific about the answers. Thanks again guys.
Minus the fiddling with the old wire, takes about 30-40 minutes to carefully take apart the console and put everything back in. Probably faster .
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Old 07-27-2015, 05:07 PM
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Originally Posted by illlojik View Post
Minus the fiddling with the old wire, takes about 30-40 minutes to carefully take apart the console and put everything back in. Probably faster .
Sounds great. Regarding the part no. is it the one I mentioned previously? Thanks.
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Old 08-24-2015, 02:57 PM
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MB GLK 320 CDI -09
Fix Comand knob problem

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Old 08-24-2015, 09:55 PM
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Great information here for us DIYers

Thanks to everyone who contributed
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Old 10-06-2015, 06:39 PM
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2008 C300 6spd
My nav was deemed nearly useless because the knob happened to break while the map was at full zoom out 500 miles - I came across another thread here on favorite voice commands and realized "zoom in" or "zoom out" in maps exists. Maybe this is common knowledge but not for me. This is after driving around for a year basically looking at a full globe...

In sum, use voice for zoom for those of you who would rather not spend on the rotate function!
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Old 10-10-2015, 08:59 PM
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2010 C300 4Matic Sport
Just wanted to add that my knob went out at around 4 years and 5 months.
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Old 10-14-2015, 02:07 PM
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c350 AMG Pkg Navi
Cool I have fixed mine....

Hello everyone, I'm a proud owner of a 2009 c350, I was in a trip to NY this weekend and I have knob failiure. I decided b4 purchasing the part 375 CAN, to put a part the one that failed. I was able to actually put everything a part an fix the original controller.

If any of you are in Toronto, please contact me so I can explain exactly what is needed to be done if you don't think you can do it I maigh be able to help you please Don't spend your money b4 trying this it actually achievable and if it worked out for me should also work out for you all right.
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Old 11-07-2015, 09:52 PM
  #96  
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'08 C300 MM Pano
Originally Posted by 959drew View Post
Good to hear.

I was able to get the unit and wire out intact without cutting the wire. I did this by unscrewing the 3 large torx screws on the yellow box holding the stick shift and moving it forward out of the way. I was then able to pick out the wire which is wedged in behind a few other wires.
Thank you for your contribution. Very much appreciated!
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Old 11-11-2015, 12:40 PM
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2009 C300 Sport 4Matic
Mine is an '09 and I have joined the command scroll wheel failure club this week.
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Old 12-24-2015, 08:09 AM
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Mercedes Benz 2011 C300 4Matic Sport
I have a 2011 C300 and the knob was very well cared for. 4 Years and a couple month later, it failed!

This is how I feel Mercedes Benz

<--- Mercedes Benz
^
Me

Merry Christmas

ps: I hope the extended warranty I just purchased from the car dealership will cover that.
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Old 02-29-2016, 12:26 PM
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2008 C300
Hey,

My knob stopped working today and I live in Toronto...any help would be much appreciated
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Old 02-29-2016, 12:27 PM
  #100  
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2009 C300 Sport 4Matic
Search youtube for Scott w204 command knob repair. He has a step by step video of how to fix it up - for that and many other w204 maintenance / repairs / mods!
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