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Shifting issue?

Discuss problems you have had or are having with your Z4
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Frank2003z4
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Shifting issue?

Post by Frank2003z4 » Fri Mar 22, 2024 12:13 am

When car in automatic mode, 1st and second shift fine when get on accelerator, once in 3rd and above, car will not accelerate and the traction control light flashes, but if I turn off traction control car will accelerate fine with no hesitation all they way through gears, no issues. If i put in manual mode first second accelerate fine once, once get to third will not accelerate, when traction control is on. Any thoughts, is there a module that controls all the speed sensors?
2003 Z4 3.0
Maroon/tan top 146k miles and counting

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enuff_zed
Lifer
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Joined: Wed Oct 26, 2016 11:05 am
Location: Attleborough, Norfolk

Shifting issue?

Post by enuff_zed » Fri Mar 22, 2024 12:41 pm

As per usual: got any codes?
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enuff_zed
Lifer
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Posts: 14803
Joined: Wed Oct 26, 2016 11:05 am
Location: Attleborough, Norfolk

Shifting issue?

Post by enuff_zed » Fri Mar 22, 2024 12:43 pm

Could be the steering angle sensor out of calibration too, as that links with the DSC.
Have you had any tracking done lately ?
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! :thumbsup:
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RAYK47
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Shifting issue?

Post by RAYK47 » Fri Mar 22, 2024 4:20 pm

I had something similar on my old E90, turned out to be ABS sensor. I think codes will tell you for sure though.

If you turn off the traction control does that help?
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Frank2003z4
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Posts: 11
Joined: Fri Jun 03, 2022 1:56 am

Shifting issue?

Post by Frank2003z4 » Fri Mar 22, 2024 5:18 pm

Traction control off works great, only codes right now is lean bank 1 and lean bank 2. Prior to this I did get a torque converter code. But since driving with traction control off no code
2003 Z4 3.0
Maroon/tan top 146k miles and counting

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