35d glow plug and control module

[scorpioy]

Hi, my 35d has code 4949 Glow system configuration and code 4A5E Glow plug cylinder 2 activation.

So I decided to follow someone's idea, to swap the glow plugs. After taking out manifold and swapped glow plug 2 and 3.
It's now showing code 4A4E, Glow plug cylinder 3. So its indeed the Glow plug issue. But code 4949 Glow system configuration stays there..

I replaced the control module already, as bought from ebay. I searched what people says it could be a defective one, but its not 100%. I really don't wanna spend over $400 from dealer to try it out... Can someone give some help on this or know definitive guide to troubleshoot code 4949? Or can we ignore code 4949?

Thanks

[ard]

Originally Posted by scorpioy

Hi, my 35d has code 4949 Glow system configuration and code 4A5E Glow plug cylinder 2 activation.

So I decided to follow someone's idea, to swap the glow plugs. After taking out manifold and swapped glow plug 2 and 3.
It's now showing code 4A4E, Glow plug cylinder 3. So its indeed the Glow plug issue. But code 4949 Glow system configuration stays there..

I replaced the control module already, as bought from ebay. I searched what people says it could be a defective one, but its not 100%. I really don't wanna spend over $400 from dealer to try it out... Can someone give some help on this or know definitive guide to troubleshoot code 4949? Or can we ignore code 4949?

Thanks

So you had a controller code (4949) and plug 2 code. Replaced the controller and swapped 2<>3. The 4949 stayed but the plug code moved to 3?


I dont know how the DDE 'traps' errors on this system. It may not be super precise in how it detects an error in the module versus individual plugs.



My impression is that GPs are like spark plugs: who replaces them one at a time? They are a maintenance item...just saying


Did you buy a new OE module on ebay? Used? OEM? or an aftermarket part?


Anyway, I wouldn't be surprised if replacing the one bad plug clears it all up. Likewise, I wouldnt be surprised if you need to replace all 6.

[smassey321]

If you purchased a used controller, you may want to return it and get a new one. 2217800156 is the old part number that ended in 2015. 12218591724 is the latest version.

The Beru part was identical to the BMW one I removed. $99 US. https://www.fcpeuro.com/products/bmw...ru-12218591724

[scorpioy]

I replaced all glow plug about 2 years ago, with aftermarket ones. The control module is new condition. It claims as OM.
Yeh, the one I bought is the same part number as yours, 12218591724.