E70 35D Codes 4BDC and 4A14
 

Bought the 2010 X5 35D Xdrive about an year ago, bought one year drive train warranty. Few days ago codes 4BDC and 4A14 showed up. Took the vehicle to the dealer and they say BMW does not cover glow plugs and the intake manifold gasket. What use is a warranty worth about $2500 is worth if it will not cover these things. Any way I need to replace the intake manifold, glow plug on cylinder 6 and fuel injection pressure sensor. Need help with it can anyone on the forum please guide me o the links that show the items I need to repair/replace.

The intake manifold is actually pretty straight forward. I did it to replace all the vacuum lines which is something you should consider doing while in there. I actually just reused the gaskets as they were in good shape and haven't had any issues at all. As for the replacement of the other items, can't help you there but I'm sure someone will chime in.

I recently replaced all 6 glow plugs and their controller on our 2009 x5 35d. See my thread for details. ECS Tuning sells a kit that includes the 6 glow plugs (Bosch) controller (Beru) and all the intake manifold gaskets for $312.44.

I followed the great post on how to remove and replace the intake manifold by sgrice

Don’t even think about just replacing one glow plug. The majority of the labor is getting to the glow plugs. The small incremental labor/cost of replacing all 6 and the controller is a no brainer.

Funf Dreisig

Powertrain warranty is VERY limited. There is a reason this is the only policy they sell for cars out of the factory warranty....im sure you thought 'well, it might not cover everything, but hopefully I'll get lucky'. You didn't.


You need to replace the glow plug controller as well (when one GP goes it usually takes out the controller. Search, this is covered here or on Bimmerfest)..I see Funf has given you a good start.


How confident are you with the dealer diagnosis? Was this a full-blown, run all the diagnostics and test plans work up?? Or a 'read two codes and throw a $$ estimate and see if he bites' quickie?

Carly shows for me glow plugs as well for 3 cylinders! I was thinking to clean them at home and put back!

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Waste of time, IMO

For $300 or so, just replace


Would you remove and clean spark plugs??

The original code on our 2009 35d was P067F code — “Cylinder 6 Glow Plug Control Circuit High”
And it is pretty clear the the #6 glow plug was not working (left to right #1->6).

Glow plugs have almost no resistance — perilously close to 1 ohm — which is why they can heat up so quickly. And also why they are hard to check with an ohm meter. As it happens all 6 of my old glow plugs measure roughly the same resistance with a Klein multimeter. So it is very unlikely that my #6 glow plug was really the problem. BUT… the diagnostics for the glow plugs are read by/through the Glow Plug Controller. So it is much more likely that the “Cylinder 6 Glow Plug Control Circuit“ that was reading “High” was within the Glow Plug Controller itself. In other words, the controller was no longer telling the #6 glow plug to turn on.

FWIW the round connector on the left side of the glow plug controller houses a single +12V hot wire that is directly connected to the alternator.

Funf Dreisig

Thank you all, appreciate the help, to top it all my transfer case has also failed have to replace it will create a new post.

Are you going to close the loop on this thread/issue? Answer the questions, describe what happened ...how it was fixed...etc??????

I am still researching what to do with it, in E53 the chain replacement costs about a $300 and seems fairly easy. I may just do that on my transfer case. I will let you guys know what I end up doing I am going to take my time and do some research, a rebuilt E70 transfer case costs $1200 or so, don't know if I will do that, can get a used transfer case from a auto parts recyclers some offer 6 month warranty.