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  #1  
Old 01-08-2020, 01:52 PM
robinasu robinasu is offline
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Weird cold shift point --> normal?

Hey all, since I bought the car some months ago, when cold, the 2nd to 3rd shift point is kind of high- about 2.5k. When warm, it shifts "normally," depending on load.

It seems harmless, but has always been odd to me.

Does this happen with your vehicles? I'm driving a 2012 X5d.
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  #2  
Old 01-08-2020, 02:06 PM
Chill_X5 Chill_X5 is offline
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I have 2012 X5d and I do have the same thing happening. I"ve been told it's normal for diesels to do so. Car wants to warm up as quick as possible.
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Old 01-08-2020, 02:31 PM
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Doug Huffman Doug Huffman is offline
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Yes. Certainly the 35d delays first and maybe second shift to warm the ZF and engine. I'll see if I can find the citation ... nope, didn't find it.
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Last edited by Doug Huffman; 01-08-2020 at 02:49 PM.
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Old 01-08-2020, 02:55 PM
robinasu robinasu is offline
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Cool

Thanks - makes sense they want it hot, but then they use a **** thermostat with ****ty or no ecu logic to detect a thermostat failure.

Last edited by robinasu; 01-08-2020 at 03:38 PM.
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Old 01-14-2020, 08:59 PM
robnitro robnitro is offline
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Yes it revs high when cold but you can get xhp and flash a tune that doesn't do that
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Old 01-15-2020, 06:55 AM
edycol edycol is offline
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Quote:
Originally Posted by robinasu View Post
Thanks - makes sense they want it hot, but then they use a **** thermostat with ****ty or no ecu logic to detect a thermostat failure.


Does that to lower NOx emissions. Diesels are not as quick to warm up as gasoline engines.


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Old 01-15-2020, 09:39 AM
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QSilver7 QSilver7 is offline
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Its an engine warm up cycle:


Another way to get out of this cycle...if you have the M/S Steptronic set-up...if you push the gear selector over into the S (sport) gate...this will stop the "adaptive" funcitons of the transmission thus stopping the engine warm up cycle's programming. Once you've reached any of the requirements for ending the warm-up cycle (the speed limit is usually the 1st or easiest to acheive)...you can then push the gear select lever back into D to resume regular shift patterns.
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Old 01-15-2020, 01:02 PM
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2010xdrive35d 2010xdrive35d is offline
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Happens to me too! Letting the d run a little longer in the mornings before take off makes it shift sooner. Still thinking when I do my trans service that might smooth out. Won't know until then.
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Old 01-16-2020, 05:42 AM
robnitro robnitro is offline
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Quote:
Originally Posted by QSilver7 View Post
Its an engine warm up cycle:


Another way to get out of this cycle...if you have the M/S Steptronic set-up...if you push the gear selector over into the S (sport) gate...this will stop the "adaptive" funcitons of the transmission thus stopping the engine warm up cycle's programming. Once you've reached any of the requirements for ending the warm-up cycle (the speed limit is usually the 1st or easiest to acheive)...you can then push the gear select lever back into D to resume regular shift patterns.
What's funny about that "official documentation" is that it still will shift high... I got rid of the stupid behavior by using xhp.
Also higher rpm when cold does not help a diesel warm up... More cold air means a colder burn.
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Old 01-16-2020, 05:53 AM
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Nyc Dito Nyc Dito is offline
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Quote:
Originally Posted by QSilver7 View Post
Its an engine warm up cycle:


Another way to get out of this cycle...if you have the M/S Steptronic set-up...if you push the gear selector over into the S (sport) gate...this will stop the "adaptive" funcitons of the transmission thus stopping the engine warm up cycle's programming. Once you've reached any of the requirements for ending the warm-up cycle (the speed limit is usually the 1st or easiest to acheive)...you can then push the gear select lever back into D to resume regular shift patterns.
Q,It didnt work for me. Sport mode acted the same when cold yesterday and today (except obviously sporty once warmed up). All good though, im doing XHP/Rod Sutphin soon.
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Old 01-17-2020, 03:23 PM
robinasu robinasu is offline
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Quote:
Originally Posted by robnitro View Post
Yes it revs high when cold but you can get xhp and flash a tune that doesn't do that
I was interested until saw I need to buy another app and android phone to load it. Maybe I will get interested later. Please let me know is this is incorrect.
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