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

 

I asked the same question when mine was replaced and was told its next to the firewall

 

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

 

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 ?

 

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

 

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.

 

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 ?

 

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.

 

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