Update Transmission Firmware

[rule1110]

Originally Posted by crystalworks

I'd have tried cheaper fluid before the ZF. Especially since they did not rebuild the valve body. Did they reset trans adaptations?

But to answer your second question. After servicing my 6hp26 with aftermarket seals, Valvoline Multi-Vehicle Synthetic ATF, and resetting trans adaptations, the 2-1 slam was gone immediately. And it was a severe slam, like getting hit from behind @ 10mph.

No haven't reset the tran adaptations. The advice from the transmission shop wasn't to do it. I do have INPA so have the ability to do it, main reason I haven't yet is I saw there is a lengthy re learn procedure so I would need to find the time and a suitable place to do that.

I contacted xhp flashtool to see what their product can offer. They said their software is built on the latest bmw software so if a bmw software update was to cure my issue then xhp should also do the same. The price was around $320Au for the license and 3 maps. I would probably only use the stage 1 map if I got it. I've been trying to find a good review of xhp with a diesel to see what it's like.