Automatic Transmission Problems of BMW M3 - part 2

I have a 2008 BMW M3 equipped with the dct transmission and my issue is the lag with 2-3 gears, this is my daily commuter car and for some one who is stuck in stop and go traffic for about 2 hours and 45 miles each way I cant not drive my car any more because of this issue. I've become really frustrated by this behavior. It's not at all intermittent -- it happens every time the car drops into 2nd gear when slowing (and not completely stopping). Decelerating to turn corners is an exercise in frustration (especially with passengers in the car) because the car won't accelerate out of the corner right away. . . And if it does, it does so rapidly, throwing everyone's heads into the headrests. I've tried upshifting to third gear, but there's a lag in that as well if I've already given the car some gas. I've had the first software update performed which has not done much.

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My 09 BMW M3 with dct is exhibiting gear shifting slowness and power lagging problems after hard braking. The most recent incident was a near rear end collision today that required me to brake hard from 70mph, to 40, switch lanes and accelerate to avoid being hit by approaching traffic from behind. When I attempted to accelerate, the car did not respond for what seemed like a couple seconds. The lag was long enough that the car behind me was forced to leave the road to avoid hitting me.

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During a rolling stop situation which is followed by any acceleration (such as a left or right hand turn), there is a throttle delay and the vehicle has the feeling of an "engine stall" and losses all power for 1-2 seconds while it searches for a gear. The problem is consistent and can be recreated at anytime. The problem presents a safety hazard in traffic situations because you are unable to move out of the way of oncoming vehicles. There are multiple complaints from owners on the internet and confirmed at the dealership. The manufacturer claims it is normal operation for the transmission. (technical service bulletin sb si b 28 07 08) however, many people did not experience the problem until after their vehicle underwent a recent recall for transmission software updates. Vehicle 2008 BMW M3 with m dct transmission.

I am extremely troubled by one particular problem I have noticed from the outset: there is a significant lag or hesitation of at least 1 second between applying pressure to the accelerator and the clutch engaging and giving acceleration to the wheels. This does not happen from a stand-still, but occurs primarily when the car is in motion at virtually all ranges of speed, from rolling stop (5km/hr or less) through standard road speeds of any degree (residential 30-40km/hr, city roads 50-70km/hr, or highway 90km/hr+). The problem is acute in d mode, but occurs in s mode as well.

M-dct transmission lag. When you're turning and cars may be coming at you there is no power, causing serious endangerment.

There is an issue with the m-dct transmission equipped on my vehicle. The problem occurs when the car is brought to a near stop such as at an intersection, and then pressure is applied to the accelerator to try and pull away quickly. In this case the vehicle will hesitate for a long period of time, potentially leaving the car unresponsive for a few seconds while coasting slowly into the intersection with oncoming traffic bearing down. The manufacturer claims this behavior is normal for the transmission but it is certainly not safe. Additionally, the problem was exacerbated by a prior software update whose intention was to fix other problematic behaviors of the transmission. So the behavior is clearly not germane to the transmission itself, it is instead the result of glitchy software which the manufacturer should rightly be obligated to fix. I firmly believe that this problem could endanger the lives of the occupants of my vehicle and sincerely hope it can be rectified immediately.

2008 BMW M3 dct the vehicle was recalled for a software update on October 2008. Since then the car has a severe lag issue upon braking then accelerating again. The throttle does not respond for a 1-2 seconds.

I have noticed since the safety recall on the m-dct gearbox: there is a significant lag or hesitation of at least 2 second between applying pressure to the accelerator and the clutch engaging and giving acceleration to the wheels. This results in a complete loss of power and causes the car to just "coast". This does not happen from a stand-still, but occurs primarily when the car is in motion at virtually all ranges of speed, from rolling stop through standard road speeds of any degree . The problem is acute in "d" mode, but occurs in "s" mode as well in 2nd gear. The result of this is that you can pull out into traffic and rather than increase your acceleration normally, the car will just coast with no power. This is extremely dangerous and I have had several near misses with a chance of a car rear ending me because the gearbox is functioning like this.

I have a BMW M3 with the dct transmission. Since getting a software update to fix another NHTSA issue with the transmission, my car will have no power at all for a couple seconds when I slow down to around 10mph, and then try to accelerate again. This leads to a very dangerous situation when cars are coming at me and the car does not move. This occurs mainly when the dct is set to the automatic mode. Many others have had the same issue. This occurs pretty much every time I slow down to around 10-15mph from 40mph or more. Many people have told the dealer and were told this is normal!! BMW is aware of this and told the dealers it's normal. . Read more...

I have the dct transmission with my 2008 BMW M3 and the lag is very unsafe. Dealer saying no fix and problem not unsafe.