My PDK behavior
#1
My PDK behavior
i've been noticing something usual after intital start up. When in AUTO mode its seems like there's a delay (about 2 seconds) before the PDK engages 1st gear. To clarify, I get the sense that the clutch is not dissengaging to my throttle input. This has only happened about 5 times now and always after intital (Cold) starts but it has gotten my attention now. I have 10k on the car. Anyone else experience this?
#2
yes...
When I select reverse to back out of my garage in the morning, PDK works perfect, but, when I reach the street and select Manual drive, it will hesitate to engage unless I let it sit for a moment after selecting drive, and before giving it any throttle.
While annoying, I had the first gen bmw SMG, and frankly, PDK is so much better in every sense that this one "glitch" doesn't trouble me (call it reduced expectation, given my experience with these automated manual gear boxes).
tim
While annoying, I had the first gen bmw SMG, and frankly, PDK is so much better in every sense that this one "glitch" doesn't trouble me (call it reduced expectation, given my experience with these automated manual gear boxes).
tim
#3
The clutch is normally slightly engaged in PDK even at stop to create "crawling" (or "creep" depending on which document you read) mode.
If you are on a hill, hill start can grab - but that's cold or hot. How cold are you talking about? Cold cars (been sitting out at 32F or lower) always seem "cold" to me - meaning they don't seem as smooth and ready to go right off. I don't notice anything particularly odd though with the PDK.
If you are on a hill, hill start can grab - but that's cold or hot. How cold are you talking about? Cold cars (been sitting out at 32F or lower) always seem "cold" to me - meaning they don't seem as smooth and ready to go right off. I don't notice anything particularly odd though with the PDK.
#4
I suppose it has to do with the fact that reverse and 1st are on the same shaft and share the same clutch (see below), so there's no dual clutching (in the normal sense) at work there.
#5
The clutch is normally slightly engaged in PDK even at stop to create "crawling" (or "creep" depending on which document you read) mode.
If you are on a hill, hill start can grab - but that's cold or hot. How cold are you talking about? Cold cars (been sitting out at 32F or lower) always seem "cold" to me - meaning they don't seem as smooth and ready to go right off. I don't notice anything particularly odd though with the PDK.
If you are on a hill, hill start can grab - but that's cold or hot. How cold are you talking about? Cold cars (been sitting out at 32F or lower) always seem "cold" to me - meaning they don't seem as smooth and ready to go right off. I don't notice anything particularly odd though with the PDK.
by cold i mean at 1st start in the am. Its happend in every season. I only mention this because its seems like its occuring more often-seemingly.
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#8
A PDK is not a tranny ?!? I imagine, Michael that you meant it's not a manual tranny. I would argue that it is an electro-mechanically actuated manual tranny. And as a manual tranny (i.e., without a cushioning hydraulic torque converter) will, when cold, be slightly harsher, as a manual tranny is.
#10
Adias brings up a good point about how PDK operates too.
#12
I don't think so. I normally stay in auto while the car warms up to prevent myself from over-revving it - my self-discipline is not so great some days.
And Auto or not, you have to manually shift from R to D regardless. While I could imagine some subtle differences in the computer programming, what else can the car be doing when you go from R to D while stopped? I think it has to go into 1st no matter what.
And Auto or not, you have to manually shift from R to D regardless. While I could imagine some subtle differences in the computer programming, what else can the car be doing when you go from R to D while stopped? I think it has to go into 1st no matter what.
#13
A PDK is not a tranny ?!? I imagine, Michael that you meant it's not a manual tranny. I would argue that it is an electro-mechanically actuated manual tranny. And as a manual tranny (i.e., without a cushioning hydraulic torque converter) will, when cold, be slightly harsher, as a manual tranny is.
#15
I am having the same problem. Almost always when the car has been sitting for awhile, which means it is almost impossible to replicate for a mechanic. Mine is a 2012 so i am just about out of warranty.