I could do with some advice from those who understand the control electronics of our magnificent cars, please. As I understand it, after a soft reboot by disconnecting the battery etc., they learn the driver's acceleration style and adjust the throttle's sensitivity accordingly. I find the result of this cleverness does not really suit me, probably because I am not consistent. Most of the time, I am content to move off from traffic lights in a steady, firm sweep of modest power and bask in the muted V8 burble. Occasionally, for a variety of reasons, I give in to the temptation to briefly floor the pedal. The result of my inconsistency is that I am teaching the system bad habits, so that I am frequently unable to move off in whatever style I happen to choose on that occasion; either she leaps forward like a jack-in-a-box or creeps forward like an elderly tortoise, relatively speaking; this is most aggravating when I get one but wanted the other.

So, my question for those who know is, can I turn off this ability to change throttle sensitivity? I would just like to fix it at a medium setting, and then it can teach me how to use it. That is what I grew up with, and it suits me better.

 

Most of the cars after a battery off do these:
1. learn min & max accelerator pedal (say 6% & 94%) and treats them as 0 and 100
2. learn fuelling i.e. how much fuel to add for the incoming air, at a variety of load values - these are summarised in fuel trims

some sort of co-operation and learning may well happen between PCM & TCM to help with smooth gear changes

Any learning inside the TCM (aka adaptations) is unaffected by battery off.

 

Oh dear! What are PCM and TCM, please?
And does this mean that I have to put up with the car sometimes trying to take off like a jack rabbit, and other times like a lethargic tortoise, both for the same amount of pedal movement so far as I am able?

 

I really don’t know the technical side of all this but I do have the same driving style. For a little fun I leave it in normal mode, for a lot of fun I move into Sport mode. When I drive in normal mode it’s always smooth. I’ve wondered if the modes learn differently but I’ve never asked the question. 07 XKR

 

There are a few Jaguar tech notes on this very topic. In short, the car will learn to adjust trims and throttle based on the manner of driving whether spirited or commuter or a combination of both. You are worrying about nothing.
In my situation, I typically prefer to have the car in S mode and use the paddles, traction control disabled, whether spirited driving or not. I prefer the manual management for the driving condition. But there are those slumber periods that my passenger prefers.

You may "feel" better, if you engage the S mode and disable the traction control for those periods you want to feel like a stallion.

 

I'm not sure the throttle sensitivity is adjusted for driving style - the transmission does adjust.

 

I stand corrected. I was looking at the total "performance package". ECM and TCM work in cooperation.
And as stated earlier, the TCM is not "reset" by the "system reset".