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C250 Issue, HELP PLEASE!

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Old Sep 2, 2015 | 11:27 PM
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harris1564's Avatar
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Mercedes-Benz C-Class 250 4Matic
C250 Issue, HELP PLEASE!

Hey guys, I got myself a 2010 C250 4Matic last year. Last night, the battery of the car died and I starting receiving the following: SRS Malfunction Service Required" and the car would not start. This morning I gave it another try, and the car started after a couple of attempts. However, now the problem seems to be something else. My climate control module is not receiving any power... On top of that, the cooling fan of the car is running on high ALL THE TIME when the car is started... Do you guys know what could the problem be?
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Old Sep 3, 2015 | 09:49 PM
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E46_5MT's Avatar
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10 C300
Have you replace your battery? On all my BMW they are act wired and following random code when I have weak battery.
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Old Oct 1, 2015 | 02:17 PM
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Mercedes-Benz C-Class 250 4Matic
Got the car checked out by my local Mercedes dealer. One of the module was fried. Repair cost me 1000$. It was caused by the battery.
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Old Feb 3, 2017 | 05:33 PM
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C300 2011
Please share the info

Originally Posted by harris1564
Hey guys, I got myself a 2010 C250 4Matic last year. Last night, the battery of the car died and I starting receiving the following: SRS Malfunction Service Required" and the car would not start. This morning I gave it another try, and the car started after a couple of attempts. However, now the problem seems to be something else. My climate control module is not receiving any power... On top of that, the cooling fan of the car is running on high ALL THE TIME when the car is started... Do you guys know what could the problem be?
I have exactly same issue on my C300 2011. Could you please share what module was fried?
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Old Feb 3, 2017 | 05:51 PM
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From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Did either of you try to jump-start the car or remove the battery terminals ?
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Old Feb 3, 2017 | 06:10 PM
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C300 2011
Originally Posted by Carsy
Did either of you try to jump-start the car or remove the battery terminals ?
Yes, this did happen after jump-start.
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Old Feb 4, 2017 | 01:38 AM
  #7  
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Mercedes-Benz C-Class 250 4Matic
Originally Posted by bypart
Yes, this did happen after jump-start.
I can't remember the name. It's the thermostat module. It will need to be brought to the dealership in order to get the part programmed, unless you have someone that has the equipment to set it up.

In my case, battery was the caused. I would strongly recommend to not jump starting these cars. Second, repace the battery instead of taking the risk of frying another module.
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Old Feb 4, 2017 | 11:33 AM
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C300 2011
Originally Posted by harris1564
I can't remember the name. It's the thermostat module. It will need to be brought to the dealership in order to get the part programmed, unless you have someone that has the equipment to set it up.

In my case, battery was the caused. I would strongly recommend to not jump starting these cars. Second, repace the battery instead of taking the risk of frying another module.
Thanks for the info. No more jump starting for this sensitive "baby".
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Old Feb 8, 2017 | 11:33 PM
  #9  
bypart's Avatar
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C300 2011
Issue resolved

Originally Posted by bypart
Thanks for the info. No more jump starting for this sensitive "baby".
in my situation the AC Control Unit was fried. Missing signal from this unit was causing a radiator fan to run on high. I purchased used AC Control Unit with the same part number and SW(software version)and HW(hardware version) as the original one. No programming was required. All came back to normal. Saved a lot of money comparing with dealer prices.
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Old Aug 10, 2017 | 02:23 PM
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**Delete**

Last edited by Mackhack; Aug 10, 2017 at 02:25 PM.
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Old Oct 30, 2017 | 12:28 AM
  #11  
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From: Augusta, Georgia
2011 E 350 Black,Mocha Int
Auxiliary battery

Hey beanr,
Never thought about the shelf life thing I read
Somewhere that it’s supposed to charge back and
Forth so to speak.

I was so glad to get it installed
i had had wierd quirky things going on with my car and auxiliary battery popped up in my info gauge I became concerned and started research via google and YouTube
my battery is right next to the drivers door inside
the dashboard near the hood release
installed the cabin filter opposite side several weeks back I’ve also replaced air filters spark plugs front brake pads
feels great saving all that money
but I never experienced and malfunction messages just popped it in
so good so far
hope this helps
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Old Nov 23, 2018 | 01:49 AM
  #12  
astha2's Avatar
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W203 C240
Ok. I found a strange thing with the transmission. Ever it goes to limp mode, if look for a slope where I can stop the car with "nose"down position where the front is lower than the back, and then when I restart it, it would not be in limp mode.
any idea why this is happening?
I remember seeing a little float thingy when cleaning the conductor plate. Does this have anything to do with it?

Thanks heaps
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Old Nov 23, 2018 | 03:55 AM
  #13  
Kelvin Bellrose's Avatar
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From: Edmonton Area
2007 CLK550 Coupe, 2003 CL600, 2012
You can boost from another vehicle, just make sure to shut it off first. If it's not running it's the same as using a battery, which is recommended by MB.
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