The "hold down accelerator for 25s" trick for smoother shift
08-27-2008, 10:20 PM
#181
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My Ride: 525dA LCI 08, space grey, M-tech, Advantage, Comfort, Nav Pro 8.8, voice, black dakota, seat heating front and back, active steering, comfort access, comfort seats, glasroof, auxiliary heating, head-up, night vision, bluetooth, DVD multimedia package in backseat, satin chrom, auto headlight control, PDC, adaptive headlights, CDC, HIFI, remaped 240hp 500nm
Originally Posted by gwf545' post='655892' date='Aug 28 2008, 03:17 AM
RaveD, The transmission reset may actaully be a throttle response related reset that affects transmission operation. There is info. at other web sites suggesting that this throttle hold down reset operation has been around for several BMW generations. Do a search and decide for yourself what is going on.
Its really an big improvement. I hope it lasts
08-28-2008, 08:28 AM
#182
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Originally Posted by rah' post='656076' date='Aug 28 2008, 02:20 AM
I tried the reset this mornig and it realy gave results. Much smoother gearing and it uses the power more right.
Its really an big improvement. I hope it lasts
Its really an big improvement. I hope it lasts
I guess I will try it myself. In sport mode, my car does not seem to downshift properly after rapid acceleration.
08-28-2008, 08:41 AM
#183
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Originally Posted by RaveD' post='656354' date='Aug 28 2008, 10:28 AM
That's the question ... does the improvement survive turning off the car?
I guess I will try it myself. In sport mode, my car does not seem to downshift properly after rapid acceleration.
I guess I will try it myself. In sport mode, my car does not seem to downshift properly after rapid acceleration.
09-03-2008, 10:39 AM
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Only just got my 535d but felt the gearbox was very slow to react when sitting at junction then giving it throttle to move off, it took 2 or 3 second to do anything. I did the reset thingy tonight and must say a big improvement
09-22-2008, 07:45 AM
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I have a 2004 545i with an issue that seems to be transmission related, and I can't fix.
When the car is in drive and heading down the road at a steady speed, especially in the 55-60 kph range, the car experiences a rhythmic hesitation - about every 3-4 seconds, it almost feels as if somebody is tapping the brakes. It's very evident. It never occurs over 80 kph. On the highway, the car is a dream. But back in the city, the symptom returns. It's been happening for about 4 months.
I was thinking a coil was faulty, but at the shop, no codes related to that. And, of course, no codes related to the transmission either... has anybody else experienced this? Any thought as to whether this 25s trick will have an effect? I don't want to try anything that might make things worse...
When the car is in drive and heading down the road at a steady speed, especially in the 55-60 kph range, the car experiences a rhythmic hesitation - about every 3-4 seconds, it almost feels as if somebody is tapping the brakes. It's very evident. It never occurs over 80 kph. On the highway, the car is a dream. But back in the city, the symptom returns. It's been happening for about 4 months.
I was thinking a coil was faulty, but at the shop, no codes related to that. And, of course, no codes related to the transmission either... has anybody else experienced this? Any thought as to whether this 25s trick will have an effect? I don't want to try anything that might make things worse...
09-22-2008, 08:51 AM
#188
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Originally Posted by Cancuckcarnut' post='675308' date='Sep 22 2008, 11:45 AM
I have a 2004 545i with an issue that seems to be transmission related, and I can't fix.
When the car is in drive and heading down the road at a steady speed, especially in the 55-60 kph range, the car experiences a rhythmic hesitation - about every 3-4 seconds, it almost feels as if somebody is tapping the brakes. It's very evident. It never occurs over 80 kph. On the highway, the car is a dream. But back in the city, the symptom returns. It's been happening for about 4 months.
I was thinking a coil was faulty, but at the shop, no codes related to that. And, of course, no codes related to the transmission either... has anybody else experienced this? Any thought as to whether this 25s trick will have an effect? I don't want to try anything that might make things worse...
When the car is in drive and heading down the road at a steady speed, especially in the 55-60 kph range, the car experiences a rhythmic hesitation - about every 3-4 seconds, it almost feels as if somebody is tapping the brakes. It's very evident. It never occurs over 80 kph. On the highway, the car is a dream. But back in the city, the symptom returns. It's been happening for about 4 months.
I was thinking a coil was faulty, but at the shop, no codes related to that. And, of course, no codes related to the transmission either... has anybody else experienced this? Any thought as to whether this 25s trick will have an effect? I don't want to try anything that might make things worse...
09-22-2008, 10:38 AM
#189
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Originally Posted by paulmc' post='661087' date='Sep 3 2008, 09:12 PM
Hmmmm, Still a delay at a junction but certainly changed how it goes up and down the box, much sharper and quicker now
The car is very slow when trying to take off and then suddenly slams you into your seat as it accelerates off.
That's when the turbo has got up to speed and is giving you the power it has.
09-22-2008, 11:30 AM
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Originally Posted by Burj530' post='675368' date='Sep 22 2008, 09:51 AM
I had the same problem. It happened at around 80~90 km/h in steptronic mode. Get the software updated and the problem is fixed.
I'm booked in at the dealership for their assessment.
I go to an independent who's very knowledgeable and thorough. He only services BMWs, and has all the current software and diagnostic equipment, but didn't want to upgrade software at random, thinking it may cause some other problems.
I also am experiencing intermittent issues with my iDrive, and I think he was nervous about blowing up the CCC if he did a software upgrade...