PML Diagnosis Correct?

[spidey3]

Hi all

Need some advice here. When going up steep slopes eg getting out of deep carparks, my ride hesitates before dropping gear to surge up, My CSA did a test and said they detected gear shift lag. He said it's due to my kelleners 19" as its 235/35/19 (non-staggered) specs is not according to recommendation, pointing at the wheel info on driver door side. Sounds real convenient to me. He seems more interested to save my workshop colleagues from more work than solving customer prob. I suggested it might be due to stale tranny oil (if there's such a thing), but as expected it was brushed off.

I do ack tat my ride used to slow too much while rolling (foot off pedel) eg. in car parks, but it's learnt tat it's on bigger wheels somehow and prob's gone mostly. But the slope prob's still there. Seems better since I switched to Shell from SPC, but not sure since it still happens occasionally. Wonder if real solution is just a change of the run-in engine oil instead. Any bros with 19" can advice if my CSA is right or plain BS? Thanks!

 

[como]

Re: PML Diagnosis Correct?

Hi all

Need some advice here. When going up steep slopes eg getting out of deep carparks, my ride hesitates before dropping gear to surge up, My CSA did a test and said they detected gear shift lag. He said it's due to my kelleners 19" as its 235/35/19 (non-staggered) specs is not according to recommendation, pointing at the wheel info on driver door side. Sounds real convenient to me. He seems more interested to save my workshop colleagues from more work than solving customer prob. I suggested it might be due to stale tranny oil (if there's such a thing), but as expected it was brushed off.

I do ack tat my ride used to slow too much while rolling (foot off pedel) eg. in car parks, but it's learnt tat it's on bigger wheels somehow and prob's gone mostly. But the slope prob's still there. Seems better since I switched to Shell from SPC, but not sure since it still happens occasionally. Wonder if real solution is just a change of the run-in engine oil instead. Any bros with 19" can advice if my CSA is right or plain BS? Thanks!

it is plain super BS !!

not sure how steep is the slope but sometimes i do experience this surging when going up deep slope, give e accelerator a good press b4 embarking on the slope, it will be smoother instead of gently pressing it. see if it helps. it does take a while for the ECU to drop gears if u are gently nudging the accelerator.

if the surging is still bad, bring it in for a check.

 

[spidey3]

Re: PML Diagnosis Correct?

Thanks. But they seemed pretty confidant abt the assertion, even ffered to change to stock rims to test further. Maybe I shld bear the hassle and do tat..

 

[como]

Re: PML Diagnosis Correct?

PML never fails to amaze us ya.

 

[Slater]

Re: PML Diagnosis Correct?

dude i have the same problem when going up market street carpark, iam on stock 17"! think its just the way the gears react coz at the point when car is going up slope it is at no mans land between 1st and 2nd. i usually switch to DS mode to allow a longer drag and avoid the car deciding between 1st and 2nd.

 

[jinooi]

Re: PML Diagnosis Correct?

i'm sick and tired of bashing PML...

spidey, don't waste time lah...

 

[spidey3]

Re: PML Diagnosis Correct?

i'm sick and tired of bashing PML...

spidey, don't waste time lah...

Yes mentally draining talking to them brickwalls most of the time haiz..

Enjoying my ride otherwise

 

[spidey3]

Re: PML Diagnosis Correct?

Thanks Slater hearing tis from a 6-potter even, I guess it's 'normal' n I just have to gun it on those slopes then.

 

[kungfupanda]

Re: PML Diagnosis Correct?

Yup, mine is also a 325 yet I also feel that lag whenever I encounter a road hump up slope.

I must step harder for the engine to kick down and the rev surge upwards to gain momentum.


so is that normal?

 

[Slater]

Re: PML Diagnosis Correct?

what i do is rather than releasing the accelerator completely, i try and keep it depress slightly even during turns up the slope to prevent the gear from kicking down.

 

[satinGHOST|r!der]

Re: PML Diagnosis Correct?

I think this problem is more software related than a hardware one. You should ask PML to update the gearbox software. No you must bang table to update the gearbox software. E90s are plenty on the road and they wont perform an update unless there is something really wrong with it. PML is just incompetent to update every car coming in unless there is a problem. Usually BMW comes out with updates at least every quarter for most cars so there is definitely an update. Or you could try resetting your gearbox as follows:

1. Switch to ignition on mode. (Meaning do not brake and start up the car. Just press the start button untill you see an exclamation sign stating ignition on mode.)

2. Fully depress the accelerator pedal untill u hear a click aka the kickdown button when you full press the pedal. Press it all the way down for 25s-30s. This should reset the gearbox learning curve.

Sometimes when there are more than 1 driver to a car, the gearbox acts weird and it is good practise to reset the adaptation values of the gearbox once every 3 months to let it learn again.

Hope this helps.

THIS HAS NOTHING TO DO ABOUT THE RIMS AND TIRES. ITS THE GEARBOX/ENGINE MANAGEMENT SYSTEMS.

Cheers!

 

[spidey3]

Re: PML Diagnosis Correct?

Thanks for the advice Will 'prompt' PML to do the software upgrade. Just not sure if it'll mean going thru another learning curve. Presently the car's seem to have learnt my driving style (or perhap e other way way hmm).

 

[Slater]

Re: PML Diagnosis Correct?

I think this problem is more software related than a hardware one. You should ask PML to update the gearbox software. No you must bang table to update the gearbox software. E90s are plenty on the road and they wont perform an update unless there is something really wrong with it. PML is just incompetent to update every car coming in unless there is a problem. Usually BMW comes out with updates at least every quarter for most cars so there is definitely an update. Or you could try resetting your gearbox as follows:

1. Switch to ignition on mode. (Meaning do not brake and start up the car. Just press the start button untill you see an exclamation sign stating ignition on mode.)

2. Fully depress the accelerator pedal untill u hear a click aka the kickdown button when you full press the pedal. Press it all the way down for 25s-30s. This should reset the gearbox learning curve.

Sometimes when there are more than 1 driver to a car, the gearbox acts weird and it is good practise to reset the adaptation values of the gearbox once every 3 months to let it learn again.

Hope this helps.

THIS HAS NOTHING TO DO ABOUT THE RIMS AND TIRES. ITS THE GEARBOX/ENGINE MANAGEMENT SYSTEMS.

Cheers!

thanks for this piece of info Omar. When the gearbox resets itself what is the default mode (spirited or non spirited) that it will adapt?

 

[satinGHOST|r!der]

Re: PML Diagnosis Correct?

thanks for this piece of info Omar. When the gearbox resets itself what is the default mode (spirited or non spirited) that it will adapt?

When the gearbox resets itself, you will find that the gearbox changes gear very fast. Over time, it will adapt according to your driving. If you do more highway driving, you will find that the gears will change faster to give you the highest gear for fuel economy. If you are stuck in the traffic most of the time, the car will drag longer on each gear and shift slowly. I have personally driven a few to notice this. Hence, its good to reset the gearbox once in a while to let it relearn given that the ECU is not able to adapt to identify the kind of driving given our constrained spaces here, urban or city.

Hope this helps.

 

[eng98]

Re: PML Diagnosis Correct?

I think i am sharing the same problem too. It can be feel most when the car is traveling slowly, so most of the time, it can be felt in multi storey car park.

Told PML when i sent in the car for servicing. They told me they had reset the gearbox software, but after that still felt the same. So last friday I sent it in again and got a tester to go for a test drive. Went to a MSCP near PML and showed him the problem.

So now waiting for PML to fix a date to fix it. I am also having the "ticking" sound from the air con on AUTO mode, which has not been able to solve for so many months and I had sent in the car on 3 occassions for it, still unsolved. So hopefully this time can do it together.

BTW, my 320i to fully stock.

 

[dgsk]

Re: PML Diagnosis Correct?

I drive a 630i and the sluggishness is just as described here. Since changing to Brisk spark plugs all this disappeared. My solution before this was to switch to sports mode during these moments.

 

[spidey3]

Re: PML Diagnosis Correct?

Hi

I couldn't wait and fearing I'd lose my cool w pml csa for sh*tting ya (u somehow have tat tot behind ur head and dread dealing w them), so I tried the gearbox reset trick from Omar this morning. It REALLY worked! The gear shifts are instantly much smoother and the car feels more zippy. Put it thru the acid test at theonce-wretched carpark upslope on way out of my workplace and voila hesitation and gear drop were gone (tested at same rev) Just to share my experience here.

Wish to thank Omar for the great advice! Ride's even more pleasant now

Wonder how the gearbox was messed up in first place. Can't suspect anyone else cept it happened before delivery? Anyway.

I think this problem is more software related than a hardware one. You should ask PML to update the gearbox software. No you must bang table to update the gearbox software. E90s are plenty on the road and they wont perform an update unless there is something really wrong with it. PML is just incompetent to update every car coming in unless there is a problem. Usually BMW comes out with updates at least every quarter for most cars so there is definitely an update. Or you could try resetting your gearbox as follows:

1. Switch to ignition on mode. (Meaning do not brake and start up the car. Just press the start button untill you see an exclamation sign stating ignition on mode.)

2. Fully depress the accelerator pedal untill u hear a click aka the kickdown button when you full press the pedal. Press it all the way down for 25s-30s. This should reset the gearbox learning curve.

Sometimes when there are more than 1 driver to a car, the gearbox acts weird and it is good practise to reset the adaptation values of the gearbox once every 3 months to let it learn again.

Hope this helps.

THIS HAS NOTHING TO DO ABOUT THE RIMS AND TIRES. ITS THE GEARBOX/ENGINE MANAGEMENT SYSTEMS.

Cheers!

 

[arowana1]

Re: PML Diagnosis Correct?

Hi all

Need some advice here. When going up steep slopes eg getting out of deep carparks, my ride hesitates before dropping gear to surge up, My CSA did a test and said they detected gear shift lag. He said it's due to my kelleners 19" as its 235/35/19 (non-staggered) specs is not according to recommendation, pointing at the wheel info on driver door side. Sounds real convenient to me. He seems more interested to save my workshop colleagues from more work than solving customer prob. I suggested it might be due to stale tranny oil (if there's such a thing), but as expected it was brushed off.

I do ack tat my ride used to slow too much while rolling (foot off pedel) eg. in car parks, but it's learnt tat it's on bigger wheels somehow and prob's gone mostly. But the slope prob's still there. Seems better since I switched to Shell from SPC, but not sure since it still happens occasionally. Wonder if real solution is just a change of the run-in engine oil instead. Any bros with 19" can advice if my CSA is right or plain BS? Thanks!

best bullshit i heard in 2009! i get this too on my e90, esp when i go up to the upper carparks at imm. as pointed out correctly by bros here, it is caused by the gear shifting down and car suddenly found the power to move up :woowooo: trick is not to let gear shift down, so u actually gotta rev a bit and climb the slope faster.

 

[Slater]

Re: PML Diagnosis Correct?

Hi

I couldn't wait and fearing I'd lose my cool w pml csa for sh*tting ya (u somehow have tat tot behind ur head and dread dealing w them), so I tried the gearbox reset trick from Omar this morning. It REALLY worked! The gear shifts are instantly much smoother and the car feels more zippy. Put it thru the acid test at theonce-wretched carpark upslope on way out of my workplace and voila hesitation and gear drop were gone (tested at same rev) Just to share my experience here.

Wish to thank Omar for the great advice! Ride's even more pleasant now

Wonder how the gearbox was messed up in first place. Can't suspect anyone else cept it happened before delivery? Anyway.

check with u arr spidey, when you depress your pedal all the way to the ground do you feel a click at the end? Or did you just push it all the way to the floor? I couldn't feel the click on my car

I tried the same trick for 30 secs but diff in gear change was only marginal. Not sure if its just a placebo effect.

 

[centurion]

Re: PML Diagnosis Correct?

Now why did you have to reset the gearbox software?

You were driving like a pussy weren't u?

It's a sports sedan. Drive it like one

@Slater it only works when the `learning gearbox' is really screwed up. If yours is not, resetting it will be no avail.

Usually cars driven by 2 people, or a schizo, will have this issue.