[stg3MB335i]

This is ridiculous, the amount of money you pay for one of these cars and the more and more i read about this problem it keeps happening, 56k on my motor. WAS running JB3, 3inch DP's, AA charge pipe, BOV, Full straight pipe exhaust with open res's, H&R coils, Wave track rear.
Anyway, was driving the other day, went to down shift to pass a car and get on it just for some fun in 4th gear, boost hit 16psi, back to 11psi at 4 grand, then back to 15-16psi from 4500 to 6200rpm, around 6200 heard a very loud pop noise, thought at first it was a charge pipe or a boost line pop, but no, Mis fired all the way home with no bank 2. Pulled in the garge, ended up letting it sit for awhile, changed spark plugs because i was due anyway, didnt change a thing. Took it into BMW and it's reading INTERNAL MALFUNCTION DME 30bb, Multiply misfire and no fire at all on bank to. Machanic is telling me when the DME went out it took the coil packs with it in bank 2, So now with NO warrenty left i have to pay for a NEW DME, and to recode it. NEW coil packs, after just replacing spark plugs, "which if you have a 335 know how stupid costly they are". So roughly right now i'm at around 2-3 grand worth of time and money into this stupid ass DME failing. Is there anyone out there that has a better solution for this problem? "And by better i mean cheaper" ha



07 335 DME-

[nafoo]

Maybe find an indy shop with a gt1? Not sure if that's what is used to reprogram.

What caused the DME failure?

[Brey335i]

Sounds fishy to me. The DME happened to fail just when you were at high boost?

[Rotorocious]

Also worried about this.

[bulldog_yyc]

Originally Posted by sleepergm

Oh found the extra info:

For some of you N54 engine owners out there.

SI B 12 18 07
Engine Electrical Systems October 2007
Technical Service

SUBJECT
N54: Running Issues with Various Faults in DME


MODEL
E90, E92, E93 with N54 from 6/10/07 to 8/18/07

E60, E61 with N54 from 6/10/07 to 8/18/07


SITUATION
Vehicle runs poorly, misfires, and may not start. One of the following fault codes, or the combination of the codes, is stored in the DME: 30BA , 30BB or 2ACC. Subsequent fault codes like 29CC, 29CD, 29CE, 29CF or 2ACB may be stored in the DME as well. Service Engine Soon Light may be illuminated.

CAUSE
Defective diode in DME.

CORRECTION
On a customer complaint basis and only if the vehicle is in the effected production range, replace the DME and reprogram/recode the complete vehicle.

WARRANTY INFORMATION
Covered under the terms of the BMW New Vehicle Limited Warranty.

Please refer to the latest KSD for all applicable labor operations and allowances. If the appropriate labor operation is not contained in KSD, then a work time labor operation should be used.

Defect Code
12 71 00 15 00

http://www.e90post.com/forums/showth...ighlight=diode

I would ask for a goodwill repair since this is a known issue but your best bet would be to remove the tune beforehand.

[Beemw335]

The dme failed just like that? Thats fkn weird man. i can understand failure while programing but it makes no sense to me that it would just fail like that.
Did you smell like electrical smoke? Maybe the dealer tried reprograming and fried your dme and are blaming it on you??

[Turkeybaster115]

Thank God I'm an October 2006 build! At 90K miles, mine should have taken a shit by now. Financially, I'm not fit enough to take another major failure, since my water pump cleaned me out a while ago. I'm just crossing my finger that my LPFP lasts till I can save up some $$.

This is nonsense though. BMW has shameful reliability. Such a pity too since these cars are such animals at the track. BMW should do a recall on a sad joke like this!

[wickedgtr]

Few options to try:

Not sure if it will work, but i have my original dme, but if it can be coded for your car - There is no reason (at least electronically) that it shouldnt be able to be coded - but the dealership may not have the tools/software to do that. Maybe an indy shop?

or - order the Power kit since you'd get a new dme as part of it (most 07's do)

or - take the dme to an electronics repair shop - Diodes are easy to test and replace - I even do electronics repair and could try to repair it if you wanted.

PM me if you want any help.

[JamesM3M5]

Try http://www.autoecu.com. They don't have the ECU listed but they do repair all sorts of control modules and components. We used them to fix an E46 convertible top module.

Whew, mine is a 07/2006 build.

[Turkeybaster115]

Also according to the TSB, these are for cars in the model year '08-'09, not '07's. We have Late '06/early '07 build dates! The thread title is misleading.

[nitehawk]

Double check, but I thought the DME was covered for 7 years under emissions warranty...it's in the owner's manual somewhere

[cn555ic]

Originally Posted by Turkeybaster115

Also according to the TSB, these are for cars in the model year '08-'09, not '07's. We have Late '06/early '07 build dates! The thread title is misleading.

E90, E92, E93 with N54 from 6/10/07 to 8/18/07

E60, E61 with N54 from 6/10/07 to 8/18/07




To me it seems as though its for basically 07 in a two month span 6-10-07 till 8-18-07 that its defective

[E30M3Driver]

Wow that sucks. I recently got the power kit and a whole new DME for $599 - glad i did that now. Good luck! I'm a 07/07 build.

[Turkeybaster115]

Originally Posted by cn555ic

E90, E92, E93 with N54 from 6/10/07 to 8/18/07

E60, E61 with N54 from 6/10/07 to 8/18/07




To me it seems as though its for basically 07 in a two month span 6-10-07 till 8-18-07 that its defective

Yes, sorry, my bad! Make that '08 model year only, with build dates from Mid June to Mid August.

[cn555ic]

lol! WOW! Your still not getting it... Its not model year '08! Its model year 2007 with build dates from 6-10 till 8-18 of 2007 model years! Its only isolated to 2 months only of 2007

[N54bimmer]

This fkn sucks...My build date is 07/12/07... Im still cpo, should I try to get them to change it? How can I check, I never had any ses or lights on the dash...

[vase330]

Originally Posted by Turkeybaster115

Thank God I'm an October 2006 build! At 90K miles, mine should have taken a shit by now. Financially, I'm not fit enough to take another major failure, since my water pump cleaned me out a while ago. I'm just crossing my finger that my LPFP lasts till I can save up some $$.

This is nonsense though. BMW has shameful reliability. Such a pity too since these cars are such animals at the track. BMW should do a recall on a sad joke like this!

You lucky bastard! I have 1/3 your milage out of warranty my LPFP decided to take a dump along with the fuel pressure sensor. Barely 500 miles later, the Water pump started some nasty Houdini leaks that would appear dump a whole lot of fluid then seal just as quickly in the most inopportune times. All told ran me close to $4K in less than a month. So I know what you are saying. Very annoying.

[Bakeme521]

You had so many "!" that i just wanted to tell you that you had to many. Didn't read the OP.

[Rotorocious]

Damnit! Mines a 10/2006

[cn555ic]

Originally Posted by Bakeme521

You had so many "!" that i just wanted to tell you that you had to many. Didn't read the OP.

!!! Lol

[stg3MB335i]

Originally Posted by E30M3Driver

Wow that sucks. I recently got the power kit and a whole new DME for $599 - glad i did that now. Good luck! I'm a 07/07 build.

Whole new ecu/dme for 600 bucks? why wouldn't everyone do this then when having DME failure? Are you happy with it? what advantages does it give me over the OEM DME?

[stg3MB335i]

Originally Posted by Beemw335

The dme failed just like that? Thats fkn weird man. i can understand failure while programing but it makes no sense to me that it would just fail like that.
Did you smell like electrical smoke? Maybe the dealer tried reprograming and fried your dme and are blaming it on you??

No, one of my good friends is a tech at my local bmw shop, he hooked up my obd2 port in front of me we scanned everything, we tried updated it, It's looking like either 3 bad coil packs caused this or it just decided to fail on me. Even if it were coil packs failing though, they shouldn't cause my DME to fail. Makes no sense.