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      07-09-2008, 11:03 AM   #1
Rennteam
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Weird M3 DCT auto mode problem

It happened three times, tomorrow the car goes to the dealer.

Following situation:

DCT is in auto mode(D1, D2 and so on).
I approach an intersection with DCT auto mode enabled.
Speed shortly before turning to the left or right is around 10 kph.
Car doesn't come to a complete stop.
POWER button is active, S5 is active. DSC is ON.
While I make the turn to the left(or to the right), the D1 or D2 in the display suddenly turns to N and the engine shuts off by itself!
You can imagine how dangerous this is, not only does the steering wheel power support stop, the car just stops in the middle of the street without the braking light. I almost got kicked from the back by another car, the driver was very angry and I understand him well.

This "phenomenon" happened three times, so I suppose this is some sort of software bug, whatever. The car is actually for my wife, she can drive auto only, I'm just doing the break-in for her. It would be impossible for her to cope with this problem and since she is driving with the two kids in this car too, I'm worried that somebody could actually really hit her car when this problem occurs.

Has somebody else experienced the same problem?
I suppose the rev figure is too low and the engine just stalls.

When I shift manually, this never happened but the rev figure fell a couple of times at around 500 rpm or slightly below, however the engine never stopped.

Any ideas? Thanks.
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      07-09-2008, 11:30 AM   #2
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I canīt really tell you what happened, but yesterday when I picked up the car and drove around in the parking lot, the engine turned of when I went from Reverse into 1st. I still donīt know what happened, and it worries me a little bit. On a side note; the DCT is such a blast, I would not have ordered the car without it.

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      07-09-2008, 11:32 AM   #3
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Take it to your dealer and have them run diagnostic test on it. Could be software problem?
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      07-09-2008, 11:40 AM   #4
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Scarry stuff, yeah just take it asap to the stealer.
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      07-09-2008, 12:38 PM   #5
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BMW should prioritizing this issue as others have noted similar problems with the DCT. The last this BMW needs considering the value of the dollar vs the Euro and declining sales is a class action law suit.

Hope all is fixed ASAP.

(Not to be a smart ass, but this is why i am waiting for my 09
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      07-09-2008, 12:46 PM   #6
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Quote:
Originally Posted by gadget View Post

(Not to be a smart ass, but this is why i am waiting for my 09

Not to be a smart ass, but this is (part of) the reason why I bought the C63.

OK I'm a smart ass.
1900 miles and my engine & tranny are fast and flawless. That's what I expected.
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      07-09-2008, 01:04 PM   #7
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Quote:
Originally Posted by Hans Delbruck View Post
Not to be a smart ass, but this is (part of) the reason why I bought the C63.

OK I'm a smart ass.
1900 miles and my engine & tranny are fast and flawless. That's what I expected.
And I'm sure if we went on an MB board there would be plenty of probelms with plenty of C63.

Oh, and your does have a flaw: bloated, too much chrome, dog like reflexes and did I mention heavy and bloated?
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      07-09-2008, 01:15 PM   #8
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Quote:
Originally Posted by Hans Delbruck View Post
Not to be a smart ass, but this is (part of) the reason why I bought the C63.

OK I'm a smart ass.
1900 miles and my engine & tranny are fast and flawless. That's what I expected.
Hans, I respect you that you made your own decision to go with C63AMG. But, Why come to this threads and say stuff like that?

I know that most MB owners are old and they don't know what internet is. So you get bored and come to E92 websites to praise C63AMG everytime huh?

If you don't have anything to add to this, don't just come and say ' that's why I bought a C63 AMG'
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      07-09-2008, 01:17 PM   #9
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To the OP,

I had a similar problem too. I was in S5 mode and was making a right turn when all the sudden the engine turned off. It was during break-in and never happened again.

Keep us updated!
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      07-09-2008, 01:21 PM   #10
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Quote:
Originally Posted by Rennteam View Post
It happened three times, tomorrow the car goes to the dealer.

Following situation:

DCT is in auto mode(D1, D2 and so on).
I approach an intersection with DCT auto mode enabled.
Speed shortly before turning to the left or right is around 10 kph.
Car doesn't come to a complete stop.
POWER button is active, S5 is active. DSC is ON.
While I make the turn to the left(or to the right), the D1 or D2 in the display suddenly turns to N and the engine shuts off by itself!
You can imagine how dangerous this is, not only does the steering wheel power support stop, the car just stops in the middle of the street without the braking light. I almost got kicked from the back by another car, the driver was very angry and I understand him well.

This "phenomenon" happened three times, so I suppose this is some sort of software bug, whatever. The car is actually for my wife, she can drive auto only, I'm just doing the break-in for her. It would be impossible for her to cope with this problem and since she is driving with the two kids in this car too, I'm worried that somebody could actually really hit her car when this problem occurs.

Has somebody else experienced the same problem?
I suppose the rev figure is too low and the engine just stalls.

When I shift manually, this never happened but the rev figure fell a couple of times at around 500 rpm or slightly below, however the engine never stopped.

Any ideas? Thanks.

I am confused by your description of the problem. You say "DCT is in auto mode(D1, D2 and so on)". Then you say that "S5 is active". How is that and what do you mean? Are you in one of the D modes or one of the S modes? You can't be in both at the same time or am I misunderstanding you?

Does this happen in all D modes or just one?
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      07-09-2008, 01:22 PM   #11
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Quote:
Originally Posted by RealSanaii View Post
To the OP,

I had a similar problem too. I was in S5 mode and was making a right turn when all the sudden the engine turned off. It was during break-in and never happened again.

Keep us updated!
I am thinking to buy with DCT. Please let us know if BMW found a solution to this fix.
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      07-09-2008, 01:23 PM   #12
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Quote:
Originally Posted by Hans Delbruck View Post
Not to be a smart ass, but this is (part of) the reason why I bought the C63.

OK I'm a smart ass.
1900 miles and my engine & tranny are fast and flawless. That's what I expected.
My engine/tranny is fast and flawless too, im sure there are cases of C63 problems just like the new M.
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      07-09-2008, 01:23 PM   #13
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Quote:
Originally Posted by Rennteam View Post
It happened three times, tomorrow the car goes to the dealer.

Following situation:

DCT is in auto mode(D1, D2 and so on).
I approach an intersection with DCT auto mode enabled.
Speed shortly before turning to the left or right is around 10 kph.
Car doesn't come to a complete stop.
POWER button is active, S5 is active. DSC is ON.
While I make the turn to the left(or to the right), the D1 or D2 in the display suddenly turns to N and the engine shuts off by itself!
You can imagine how dangerous this is, not only does the steering wheel power support stop, the car just stops in the middle of the street without the braking light. I almost got kicked from the back by another car, the driver was very angry and I understand him well.

This "phenomenon" happened three times, so I suppose this is some sort of software bug, whatever. The car is actually for my wife, she can drive auto only, I'm just doing the break-in for her. It would be impossible for her to cope with this problem and since she is driving with the two kids in this car too, I'm worried that somebody could actually really hit her car when this problem occurs.

Has somebody else experienced the same problem?
I suppose the rev figure is too low and the engine just stalls.

When I shift manually, this never happened but the rev figure fell a couple of times at around 500 rpm or slightly below, however the engine never stopped.

Any ideas? Thanks.
Is it shutting off or stalling? Perhaps the car is shifting into neutral and trying to idle but something is wrong with the idle control valve and the car stalls. All you see is the car in neutral and the engine dead. I ask because you mention a problem with the rev dropping low. If the car is in gear then you would feel a severe jerk if the revs really drop to 500. Do you feel that? It could be something as simple as a bad/dirty ICV? It's something to check in older cars when the have problems idling but I imagine there could be problems with the valve on a new car too. Do you ever have problems when the car is idling? Is it worse with the AC on?

I'm not an expert mechanic, but you did ask.
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      07-09-2008, 01:26 PM   #14
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Quote:
Originally Posted by jm1234 View Post
Is it shutting off or stalling? Perhaps the car is shifting into neutral and trying to idle but something is wrong with the idle control valve and the car stalls. All you see is the car in neutral and the engine dead. I ask because you mention a problem with the rev dropping low. If the car is in gear then you would feel a severe jerk if the revs really drop to 500. Do you feel that? It could be something as simple as a bad/dirty ICV? It's something to check in older cars when the have problems idling but I imagine there could be problems with the valve on a new car too. Do you ever have problems when the car is idling? Is it worse with the AC on?

I'm not an expert mechanic, but you did ask.
In my experience, the engine was totally off. I had to pull over to see what was going on but engine started fine after that. And at 1500 miles, no problems.
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      07-09-2008, 01:29 PM   #15
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Oh boy! Good luck buddy...keep us up to date ASAP. And not to be a smart ass but 1.) if you think the 09 is gonna have any less problems than the 08, then get ready for a dose of reality! 2.) here we go again (i will try my very best to be nice here) The Merc C63 is a GOOD imitation car, but in the end an imitation of the M3 nonetheless! I have a Merc. Like to take it out for a relaxing spin on Sundays, or maybe drive it to Church. But when i wanna drive a real car I, I drive my M3
ps- the C63 engine sounds like my John Deere riding lawn mover.
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      07-09-2008, 01:30 PM   #16
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Whoa! This is serious and potentially very very dangerous. Whoever has had this problem should probably tell their service departments that other people are also having these issues so that BMW USA can escalate it and let the German engineers know. It'll help out all the others by making the voices louder.

I'm getting my M3 DCT sedan around July 20th and will make sure I ask the guys here at Manhattan to make sure I've the latest software etc., in the car.

Good luck with the fix.

- aLV
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      07-09-2008, 01:32 PM   #17
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Quote:
Originally Posted by gadget View Post
BMW should prioritizing this issue as others have noted similar problems with the DCT. The last this BMW needs considering the value of the dollar vs the Euro and declining sales is a class action law suit.

Hope all is fixed ASAP.

(Not to be a smart ass, but this is why i am waiting for my 09
Actually BMW sales are up...see this forum further down...

http://www.m3post.com/forums/showthread.php?t=155168

I am kinda being smart ass......

Jason
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      07-09-2008, 03:42 PM   #18
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Quote:
Originally Posted by e46e92love View Post
And I'm sure if we went on an MB board there would be plenty of probelms with plenty of C63.
Actually no, there aren't.

Quote:
Originally Posted by RealSanaii View Post
Hans, I respect you that you made your own decision to go with C63AMG. But, Why come to this threads and say stuff like that?

I know that most MB owners are old and they don't know what internet is. So you get bored and come to E92 websites to praise C63AMG everytime huh?

If you don't have anything to add to this, don't just come and say ' that's why I bought a C63 AMG'
You are exactly right. Biting tongue now, sorry.

FWIW, (which is zero on this forum) there ARE enthusiasts who are choosing the C63. I am not alone in defecting from the M3 to C63, there are others. And yes, that board is damned slow! I guess the C63ers for the most part have more important things to do.... unlike ME right now!
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      07-09-2008, 03:58 PM   #19
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Quote:
Originally Posted by Hans Delbruck View Post
Actually no, there aren't.
Well except for the whole loss of power thing when outside temps get above 70 degrees..... just kiddding Hans

Jason
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      07-09-2008, 04:08 PM   #20
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[quote=Hans Delbruck;2961273]Actually no, there aren't.



of course their aren't thats why MB is ranked one of the lowest in customer satisfaction behing kia i believe
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      07-09-2008, 04:12 PM   #21
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Quote:
Originally Posted by Hans Delbruck View Post
Not to be a smart ass, but this is (part of) the reason why I bought the C63.

OK I'm a smart ass.
1900 miles and my engine & tranny are fast and flawless. That's what I expected.
Don't let him fool you. He had to take his car to the shop due to an engine problem with barely 60 miles on the odo Hans, is there a reason for this trolling?
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      07-09-2008, 04:36 PM   #22
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Originally Posted by ihyln View Post
Don't let him fool you. He had to take his car to the shop due to an engine problem with barely 60 miles on the odo Hans, is there a reason for this trolling?

ooooo good gossip!

Jason
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