2015 R TracDSC
#21
I'm just getting used to the car again. I need to re-read the manual to remember what all those buttons are for.
My usual routine is steering and dampers in dynamic, exhaust on quiet, and TracDSC. TracDSC lets the tail get a little loose on throttle, but I don't remember the details of what it is supposed to do.
My usual routine is steering and dampers in dynamic, exhaust on quiet, and TracDSC. TracDSC lets the tail get a little loose on throttle, but I don't remember the details of what it is supposed to do.
#22
I'm just getting used to the car again. I need to re-read the manual to remember what all those buttons are for.
My usual routine is steering and dampers in dynamic, exhaust on quiet, and TracDSC. TracDSC lets the tail get a little loose on throttle, but I don't remember the details of what it is supposed to do.
My usual routine is steering and dampers in dynamic, exhaust on quiet, and TracDSC. TracDSC lets the tail get a little loose on throttle, but I don't remember the details of what it is supposed to do.
#23
I don't have the updated clutch. I have an un-smashed car with an original clutch. So far I remain unconvinced that moving the sensitivity of the accelerator pedal to the initial travel is the right thing.
#24
I thought I remembered you were a bit dissatisfied with the clutch feel.
I too did not use the dynamic throttle mapping mostly because the original (crappy) clutch required some real finesse and care to avoid slipping during a shift. Since the updated clutch I have found the benefit in using the dynamic setting.
I too did not use the dynamic throttle mapping mostly because the original (crappy) clutch required some real finesse and care to avoid slipping during a shift. Since the updated clutch I have found the benefit in using the dynamic setting.
#25
The DSC/TracDSC/off setting does not appear to affect anything other than the way the ABS HCU logic behaves. In the JaguarDrive info on TOPIx it states:
How the DSC works is described in the attached PDF on page 6.
DSC controls Vehicle Stability and Traction only.
In Dynamic the Traction and DSC parameters are the same as Normal.
TracDSC and DSC ‘off’ are independent of the JDC modes. TracDSC and DSC ‘off’ function the same in all JDC modes.
If TracDSC is selected or DSC is switched off and then subsequently the JaguarDrive Control mode is changed, DSC is automatically switched back on.
In Dynamic the Traction and DSC parameters are the same as Normal.
TracDSC and DSC ‘off’ are independent of the JDC modes. TracDSC and DSC ‘off’ function the same in all JDC modes.
If TracDSC is selected or DSC is switched off and then subsequently the JaguarDrive Control mode is changed, DSC is automatically switched back on.
#26
I thought I remembered you were a bit dissatisfied with the clutch feel.
I too did not use the dynamic throttle mapping mostly because the original (crappy) clutch required some real finesse and care to avoid slipping during a shift. Since the updated clutch I have found the benefit in using the dynamic setting.
I too did not use the dynamic throttle mapping mostly because the original (crappy) clutch required some real finesse and care to avoid slipping during a shift. Since the updated clutch I have found the benefit in using the dynamic setting.
#27
This is the best driver oriented explanation I've found so far:http://topix.jaguar.jlrext.com/topix...20dynamics.pdf
It may already be posted on this forum, but I haven't seen it.
Last edited by Unhingd; 10-01-2016 at 09:03 AM.
#28
That "Driving dynamics" PDF is for a late-model XK, but the system is very similar. The PDF that DJS posted earlier (https://www.dropbox.com/s/wskjex70o2...ntrol.pdf?dl=0) is a similar overview for the F-Type.
I can't see anything in the F-Type technical documentation that mentions DSC/TracDSC as controlling anything other than braking the corners as needed, and telling the ECM to reduce engine torque. With DSC fully off you will still have interference when the car feels it is absolutely necessary (like restricting the torque when the wheels are spinning to protect the drive line), and it will even turn the full DSC back on if you push it too fast or hard. The overview guides are all mixed in with the JaguarDrive settings which can change transmission, steering, suspension and throttle control. JD and DSC are completely different things that work together, and can be used independently of one another.
It is worth noting that the different JD modes (winter/normal/dynamic) do change the interferance thresholds in both DSC and TracDSC settings. Although no detail is given, I suspect this would allow it to take action sooner in winter and later in dynamic.
I can't see anything in the F-Type technical documentation that mentions DSC/TracDSC as controlling anything other than braking the corners as needed, and telling the ECM to reduce engine torque. With DSC fully off you will still have interference when the car feels it is absolutely necessary (like restricting the torque when the wheels are spinning to protect the drive line), and it will even turn the full DSC back on if you push it too fast or hard. The overview guides are all mixed in with the JaguarDrive settings which can change transmission, steering, suspension and throttle control. JD and DSC are completely different things that work together, and can be used independently of one another.
It is worth noting that the different JD modes (winter/normal/dynamic) do change the interferance thresholds in both DSC and TracDSC settings. Although no detail is given, I suspect this would allow it to take action sooner in winter and later in dynamic.
#29
- Vehicle stopped
- Engine at 2000 rpm
- Engage 4th gear and release the clutch
Mine is vague and I have had some slippage under particularly aggressive shifting, but it is nowhere near what you described.
I almost always use TracDSC because I would rather handle some wheelspin than having the system cut power. It's much more predictable for me. After having power cut when I was passing a very slow moving vehicle I opted to decline the full set of electronic nannies in most situations.
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James Tootle (10-01-2016)
#30
#31
#32
FWIW, my dealer told me turning it off doesn't completely turn it off (can't remember percentage). He said you have to hold it for longer than the manual says (again, can't remember how many seconds) before it completely shuts off.
Never played with it, so not sure if true or not
Never played with it, so not sure if true or not
Dave
#33
The symbol (car with squiggles) will be illuminated for DSC off and also for TracDSC. It stays lit. You'll get a message in the center dash telling you which of the two it is, but that message only lasts for a second or two.
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