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- Towny23
- Member Since: 27 Jul 2025
- Location: Midlands
- Posts: 4
Another Newbie Question.
I had such success with my previous enquiry, that I've decided to ask another question...
When accelerating from a total stop or a rolling stop my D5 seems to hardly move to start with but, a further millimetre pressure on the accelerator, and the car leaps forward like a scalded cat!
This is particularly annoying at a 90 degree junction. I'm trying to learn to finesse this characteristic -with minimal success so far.
Are they all like this or is this a fault do you think? If so what can I do to cure it?
Many thanks for any response.
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- Mole HD
- Member Since: 18 Nov 2024
- Location: Orkney Islands
- Posts: 396
Don't think it's a fault since mine, even though it's a TD6 diesel, does exactly the same...I thought at first that the butterfly valve in the throttle body was sticking so I checked. It was fine.
Be interesting if anyone else has felt the same...petrol or diesel.
Edit:
Just out of interest, I went a-looking on t'interwebs to see what I came up with. Seemingly, it may not be the throttle response that's the issue but the ZF gearbox. As a common gearbox issue, the possible solution will work on both petrol or diesel.
A possible solution...not tried it myself so take it with the required amount of salt. Maybe worth testing though. If for no other reason than to rule it out and place it into the Urban Myth section of the forum... It certainly won't do any harm...
Reset Automatic Transmission:
0. Press "Start" button only. (ie: Do NOT start the engine.)
1. Press and hold accelerator pedal to floor for approx. 15secs.
2. Press "Start" button again.
3. Release accelerator pedal.
4. Wait approx. 2mins.; start engine and drive.
(Footnote: This process (according to the poster on another forum) will renew the transmission program and erase the adaptive learning system to learn your driving style. If ever the system feels slow/sluggish just perform another reset.)
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- ajac
- Member Since: 20 Jul 2025
- Location: Shakespeare's County
- Posts: 43
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Not really picked this behavoir upo on mine. Not sure if d5’s are the same but my old 405 (same gear box) manual said the car will learn the drivers style and effectively shift to suit. Had the car long? May be a previous owner was a bit erratic?
If Moles suggestion does not bear fruit - perhaps a box flush?
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- Wolfpack
- Member Since: 25 May 2019
- Location: Norfolk, UK
- Posts: 436
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I’ve got a petrol si6. It’s always needed a delicate foot from start. Even the Indy technician who came to collect it for its service remarked that it “scared him witless” how fast it set off after “hardly touching the pedal”
I bought it 2nd owner ….maybe it still thinks the first owner is driving it.
I will try that reset tomorrow.
Edit: Maybe I am imagining it …..but having carried out the aforementioned ritual ( I did it at midnight to add a little more magical weight) I am able to report back that the car is absolutely, unchanged.
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- Mole HD
- Member Since: 18 Nov 2024
- Location: Orkney Islands
- Posts: 396
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Does this adaptive learning thing take a period of time to learn your driving habits?...I've absolutely no idea
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- ajac
- Member Since: 20 Jul 2025
- Location: Shakespeare's County
- Posts: 43
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Not really, few hundred miles i think.
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