I recently bought a 2013 Z4 35is and tested out all the systems including launch control. I am aware you need to cover 6.2 miles of distance from start before the launch control will engage and following the steps from the manual, all is working as intended.
Then I bought and flashed the MHD stage 1 to the car and since then the launch control won’t engage despite following all the steps as advertised. Wondering whether anyone else have encountered a similar issue?
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Flashed MHD now no launch control FIXED
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Hejnfelt
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Flashed MHD now no launch control FIXED
Last edited by Hejnfelt on Mon May 15, 2023 7:52 am, edited 1 time in total.
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B21
- Lifer
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- Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia
Flashed MHD now no launch control
I never use launch control…it’s extremely cruel to the car’s powertrain…
I assume that something in MHD replaces / substitutes launch control…
Do you use xHP?
I assume that something in MHD replaces / substitutes launch control…
Do you use xHP?
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is
A very modified Atacama Yellow 35is
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Hejnfelt
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Flashed MHD now no launch control
I have not flashed xHP yet, but it’s on my list of things. Why so?
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B21
- Lifer
- Posts: 5463
- Joined: Tue Oct 05, 2021 7:15 pm
- Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia
Flashed MHD now no launch control
XHP is quite sophisticated in allowing you to control a wide variety of shift related aspects…MHD and xHP go hand in glove
Great combo
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is
A very modified Atacama Yellow 35is
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Hejnfelt
- Newbie
- Posts: 33
- Joined: Tue May 02, 2023 10:11 pm
Flashed MHD now no launch control
I am planning to flash xHP but want to get ironed out why the launch option isn't working. Even if I don't plan to use it often, I don't like it when software does things it wasn't meant to do, so just wondering why launch control is inactive now and whether there is an option to get it back.
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enuff_zed
- Lifer
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- Location: Attleborough, Norfolk
Flashed MHD now no launch control
It's a new green initiative.
If you increase the power of your car they disable launch control to protect the hedges and trees around you.
If you increase the power of your car they disable launch control to protect the hedges and trees around you.
HQ of 'Norfolk Zed Rescue'.
Always happy to help if I can.
If the forum helped you, why not help the forum back. Thats the Z4 way!
Always happy to help if I can.
If the forum helped you, why not help the forum back. Thats the Z4 way!
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Hejnfelt
- Newbie
- Posts: 33
- Joined: Tue May 02, 2023 10:11 pm
Flashed MHD now no launch control
Haha
I figured out the issue and answering for the sake of future people searching the forums, in MHD there’s an option to disable the kick down sensor in Manual mode so the DCT doesn’t change down when flooring it in M mode. I had that option checked. Unchecking this option and reflashing, instantly fixed the launch control so seems the launch control relies on the kick down sensor.