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Glow Plug Control Module

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Old May 19, 2012 | 12:18 PM
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mbhouston
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2008 ml320 CDi
Glow Plug Control Module
Hi,
Does anyone know where the glow plug control module is located? Any pictures will help. I have a ML 320 CDI.

Thank you,
MBP
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Old May 28, 2012 | 06:29 PM
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98 Black C43 , 12’ ML 350 Blutec
I asked the same question when mine was replaced and was told its next to the firewall
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Old May 28, 2012 | 07:48 PM
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mbhouston
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2008 ml320 CDi
Thanks for the reply. I found the location...very easy 10 minute job. Just need to order the unit. I want to make sure it is the problem.

Regards
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Old Jun 8, 2012 | 08:13 PM
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2008 ml320 CDi
I replaced the control.....works like a dream, CEL is now off. Cost was $130 for unit and 20 minutes to install.

Thanks for all the help.
MBP
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Old Jun 9, 2012 | 07:22 AM
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2005 E320 CDI (sold); 2007 R320 CDI (sold); 2008 ML320 CDI; 2014 ML350 Bluetec
Originally Posted by mbhouston
I replaced the control.....works like a dream, CEL is now off. Cost was $130 for unit and 20 minutes to install.

Thanks for all the help.
MBP
did you replace glow plug or relay ? The other day I got similar problem - I turned off warning message and I didn't get since.

How did you find what it should be installed ?
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Old Jun 9, 2012 | 06:08 PM
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mbhouston
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From: Texas
2008 ml320 CDi
I replaced the relay, called the controller. I had a code that pointed to the number 2 cylinder glow plug. I replaced the glow plug but ecu did no reset it self....continued with the same code. After a while, the glow plug indicator lamp turned off within seconds but came on after the car started for another 40 seconds. CEL remained on. Symptoms pointed to the glow plug controller.

Hope this helps.
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Old Jun 11, 2012 | 07:10 PM
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2005 E320 CDI (sold); 2007 R320 CDI (sold); 2008 ML320 CDI; 2014 ML350 Bluetec
Originally Posted by mbhouston
I replaced the relay, called the controller. I had a code that pointed to the number 2 cylinder glow plug. I replaced the glow plug but ecu did no reset it self....continued with the same code. After a while, the glow plug indicator lamp turned off within seconds but came on after the car started for another 40 seconds. CEL remained on. Symptoms pointed to the glow plug controller.

Hope this helps.
Thanks ...I have similar problems ...Since I turned off CEL, I didn't get any message but for sure, it is coming back in 3-4 months with colder days
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Old Jun 18, 2012 | 09:15 PM
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mbhouston
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2008 ml320 CDi
I am getting messages regarding the controller.
The original part number is:6421532279. This is replaced by a new part number:6429002700. I bought my part from http://www.genuinemercedesparts.com/. This a Mercedes dealership with an online presence. You can search by part number or vehicle. Reliable folks, takes three days to arrive on my doorstep. Cost was $131.20 plus &10.99 shipping.

Good luck.
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Old Feb 21, 2014 | 10:28 PM
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Ml 280 cdi
Glow Plug Control Module location
Originally Posted by mbhouston
Thanks for the reply. I found the location...very easy 10 minute job. Just need to order the unit. I want to make sure it is the problem.

Regards
Looks like I need to change the module in my ML 280 CDi (2008), too. Can someone let me know where the module is located ?
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Old Feb 22, 2014 | 08:25 AM
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It is under a bracket on the top front right side of the engine.


There is a you tube video of it being replaced on a Jeep that I found very helpful.
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Old Feb 24, 2014 | 03:48 PM
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LM320 CDI
glow plugs module ( 2008 ML320CDI ) are located at the same place like in the Jeep Grand Cherokee 2007 ( at the right side on front of the engine
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