DSC ; DTC
04-05-2006, 05:43 PM
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In my car, 04 545i, I have noticed that I can turn the DSC to reduced control or completely off. But it leaves the DTC on. Can anyone explain what the DSC is and what the DTC beyond the actual names and to their functions. Is there any yaw control in the 545?
Feel free to elaborate on all topics related to the DSC, DTC and breaking assist.
Thanks.
Feel free to elaborate on all topics related to the DSC, DTC and breaking assist.
Thanks.
04-05-2006, 07:17 PM
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DSC on is yaw control and extreme traction control (DSC on).
DTC on is less traction control and less yaw control possibly only because there is less traction control (DTC on).
Both off is supposed to be neither traction control nor yaw control (press and hold DTC button for a few seconds until the triangles show up in the instrument cluster).
Unfortunately, in principle, one cannot completely disable traction control while leaving most, if not all, yaw control active.
On my car, in fact, I am positive that some yaw control remains even with both DSC and DTC off. That would be fine if it turned out that traction control is mostly muted. But, it appears to me that an overly aggressive amount of traction control, probably for purposes of engine/tranny salvation, also remains under 20.01.00--which is most annoying.
DTC on is less traction control and less yaw control possibly only because there is less traction control (DTC on).
Both off is supposed to be neither traction control nor yaw control (press and hold DTC button for a few seconds until the triangles show up in the instrument cluster).
Unfortunately, in principle, one cannot completely disable traction control while leaving most, if not all, yaw control active.
On my car, in fact, I am positive that some yaw control remains even with both DSC and DTC off. That would be fine if it turned out that traction control is mostly muted. But, it appears to me that an overly aggressive amount of traction control, probably for purposes of engine/tranny salvation, also remains under 20.01.00--which is most annoying.
04-06-2006, 01:12 PM
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Originally Posted by Znod' post='265316' date='Apr 6 2006, 06:17 AM
On my car, in fact, I am positive that some yaw control remains even with both DSC and DTC off. That would be fine if it turned out that traction control is mostly muted. But, it appears to me that an overly aggressive amount of traction control, probably for purposes of engine/tranny salvation, also remains under 20.01.00--which is most annoying.
But are you sure Znod, that still some electronic control stays on even if you take them both off?
Could it just be the softness of the system or is there maybe a safecontrol?
The car could have some anti-self-catastrophe mode.
Why not, sounds even logical.
If a car has a four year warranty in the US and cars with strong V8's could (and for sure is)
driven to the edge...
But still something is missing.
The dudes in Europe chip their R6 diesels to huge torgue values.
As we know, the ripping power kills transmissions but the torgue will do it fore sure, in a while...
04-07-2006, 06:11 AM
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Originally Posted by Ricracing' post='265638' date='Apr 6 2006, 04:12 PM
Answer to wingfan919: Znod's got it.
But are you sure Znod, that still some electronic control stays on even if you take them both off?
Could it just be the softness of the system or is there maybe a safecontrol?
The car could have some anti-self-catastrophe mode.
Why not, sounds even logical.
If a car has a four year warranty in the US and cars with strong V8's could (and for sure is)
driven to the edge...
But still something is missing.
The dudes in Europe chip their R6 diesels to huge torgue values.
As we know, the ripping power kills transmissions but the torgue will do it fore sure, in a while...
But are you sure Znod, that still some electronic control stays on even if you take them both off?
Could it just be the softness of the system or is there maybe a safecontrol?
The car could have some anti-self-catastrophe mode.
Why not, sounds even logical.
If a car has a four year warranty in the US and cars with strong V8's could (and for sure is)
driven to the edge...
But still something is missing.
The dudes in Europe chip their R6 diesels to huge torgue values.
As we know, the ripping power kills transmissions but the torgue will do it fore sure, in a while...
I am sure that some residual effects remain on my car after turning both off. I have observed the car mute a small fishtail, and I have seen it shift very early after it thought too much wheel spin had occurred (actually a relatively small amount). Fail safes would be OK, but what happens on my car is way over zealous.
04-07-2006, 06:20 AM
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Originally Posted by Znod' post='265896' date='Apr 7 2006, 05:11 PM
Hi Rr:
I am sure that some residual effects remain on my car after turning both off. I have observed the car mute a small fishtail, and I have seen it shift very early after it thought too much wheel spin had occurred (actually a relatively small amount). Fail safes would be OK, but what happens on my car is way over zealous.
I am sure that some residual effects remain on my car after turning both off. I have observed the car mute a small fishtail, and I have seen it shift very early after it thought too much wheel spin had occurred (actually a relatively small amount). Fail safes would be OK, but what happens on my car is way over zealous.
Could this be worth asking from the factory?
In my car I can't really feel that any restrictions
would be on.
Of course the engine has its rpm limiter but that's it.
Could it have something to do with the autotrans programming?
04-07-2006, 01:00 PM
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Originally Posted by Znod' post='265316' date='Apr 6 2006, 05:17 AM
On my car, in fact, I am positive that some yaw control remains even with both DSC and DTC off. That would be fine if it turned out that traction control is mostly muted. But, it appears to me that an overly aggressive amount of traction control, probably for purposes of engine/tranny salvation, also remains under 20.01.00--which is most annoying.
PS: for all you safety conscious treehuggers out there (
), I only have this kind of fun when I am alone in the car and when there is absolutely no one around.
04-07-2006, 02:35 PM
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I have heard that also - that traction control is never fully off on the American Cars.
04-08-2006, 12:57 AM
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Originally Posted by Ricracing' post='265899' date='Apr 7 2006, 09:20 AM
Dear Znod,
Could this be worth asking from the factory?
In my car I can't really feel that any restrictions
would be on.
Of course the engine has its rpm limiter but that's it.
Could it have something to do with the autotrans programming?
Could this be worth asking from the factory?
In my car I can't really feel that any restrictions
would be on.
Of course the engine has its rpm limiter but that's it.
Could it have something to do with the autotrans programming?
04-08-2006, 01:00 AM
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Originally Posted by jsal' post='266148' date='Apr 7 2006, 05:35 PM
I have heard that also - that traction control is never fully off on the American Cars.
04-08-2006, 01:25 PM
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Originally Posted by Znod' post='266303' date='Apr 8 2006, 12:00 PM
It was off on my car under 19.01.01. But, dumb and trusting me updated to 20.01.00 to get MP3, and now I can't shut the nanny all the way off. But, others have not had this experience when updating to 20.01.00.
I'm running with the 19.2 and the car works just perfect.
If I didn't get you wrong you also have a stock car.
The fact is I'm really not giving my low powered car any punish,
except for some overtaking i.e. when needed.
In everyday driving the car responses highly satisfactory.
The really ice roads tells me a lot.
If I don't sell my 18" RF's next week, I will burn out the Dunlop RF's,
finding out something about the cars electronics...