Not changing up!

[Scamp's Walker]

Auto box not changing up from third....any ideas?

[sparks_E39]

How many miles and what BMW is it?

[phumy]

Did you check the stat and the engine temp sensor?

[mr.man]

Duff wheel sensor. Was on my 528 with same problem.

[Scamp's Walker]

mr.man and sparks, I have pm'd you.

[fixedwheelnut]

Have you had any new tyres ? a difference of more than 4mm in tread can lead to a big enough difference in wheel speed measured at the sensors to make the control unit think the car is cornering and prevent changing up a gear.

[Waynester]

My 97 523 did this if I booted it hard from stationary.
It would just not change up from 3rd! I had to use the triptronic
to get the desired gear. New tyres - no problem since!



(did this with my new itouchpodthingy......coool)