kskane

Yes, I replaced all solenoids (3xblue, 3xyellow, 1xblack) and 5xgasket+1Sleeve and I have driven 4000KM since the change. Jerks are still present. I am looking at the software upgrade as an option at this point instead of replacing the mekatronic (which to me is TCU+Solenoid+Valve body) or the torque converter.

seanjordan20

The only difference I can see between what you did and what I did is I actually sent my VB in to be rebuilt since I was already going to spend $500 for solenoids I just spent an extra $100 and they rebuilt and replaced solenoids, replacing internal gaskets with the improved ones and checking for internal leaks, valve issues and correcting bore misalignment. What you are describing can be an issue with the VB or might can be solved with an update but deciding which to do will be up to you. A new VB cost around $1200 which is rebuilt. Rebuilding yours costs around $600 including shipping and lifetime warranty from one of the best in the business.

I looked around and found something that describes what you are having and what can cause it. Look at the gasket surfaces section. I can not tell you what really corrected the issue that I had (late shifting and Trans Malfunc. error) because all mine were corrected at once with the rebuild. I hope this helps out.

kskane

Thanks for the reply seanjordan20 and I wish there were places here in Australia to repair the valve body. The here simply start talking about replacing, no repair and if repair is suggested the cost is more than what I can get sent from US. From what I can see, your suggestions are inclined towards software upgrade or VB refurbishing, and not towards torque converter. I really do not wish to remove the the whole tranny, as the VB I can handle myself. So far, I believe the software upgrade is in order as mine was done in 2005, pretty old software.

seanjordan20

That is old. I think my last upgrade was 2008. What are the numbers they are talking about for rebuild. Would it benefit you to send your VB to the states for rebuild knowing that shipping will make it more expensive. I know there is a place in china that is cheaper but the warranty is not as great or would it be better just to order one from the States. I know software upgrade is an option but if it does not work what would be your next course of action.

I have not said anything about the torque converter because it is not showing any signs that it is bad. Signs of a bad converter are overheating, slipping, shuddering (jerking at low speeds), dirty fluid, high stall speeds, or strange noises. So that has been off the table for me at the beginning. If you are not running low fluid then it will not go bad.

I would start cheap to expensive myself. I cant say which is it but I can say it is only the two but if I had to put money on it then it would be the VB. I hope that I have given you enough info to make a sound decision. If you need any help with rebuilding your VB or purchasing one let me know.

kskane

Looked and found a VB rebuild kit ZF6-6R60-ZIP, is that good?

seanjordan20

Are you going to do the rebuild. Post a link? What does it consist of. You personally cant rebuild a VB unless you have the equipment which cost thousands. The pressure tester is over $25,000 alone.

seanjordan20

Ok I did a search and saw what you were seeing. That is the rebuild kit but it doesnt include the solenoids. Sonnax is the company who rebuilt mine and they are a good company. I would recommend you having them rebuild it and get the life time warranty.

Ok never mind I forgot you are in Australia. There is alot to rebuilding a VB. Once you replace the parts you need a way to align and test it. You are in a odd situation being that you do not have the accessibility we have in the states. You can actually get it done but will mean you will be with out your car for 3 to 4 weeks. Its hard but have you looked to find if there is a place who sells the Mech for a decent price? Rebuilding it yourself is not an option unless you have the equipment and knowledge.

kskane

Thanks for the advise, and the cost to buy a Mekatronic with refurbished VB is A$3000, but I can buy that kit from Sonnax for A$200. According to what I read, that kit does not needs any special tools to rebuilt, It is as simple as pulling out each valve and replacing the parts with the new kit and there are 6 valves in total. So, has anyone done this as a DIY is the question.

Another alternative is to upgrade the software on the transmission. I found a SIB, which says this issue is related to the software upgrade and to upgrade the entire car not just transmission. I called 3 dealers here, and general response I get, they will charge me A$300 for the software upgrade but no one will give me guarantee if the upgrade will go smooth. The dealer is not responsible for any module that goes bad and I will have to pay for replacement.

kskane

I found that the issue is related to NIC. Some say the NIC is software issue related to adaptation. Is that really the case. Anyone knows what causes the NIC problem?

bmwrider2010

It is not torque converter and it is not related to software. You can try that but you will be wasting your time. Most likely it is mechatronic body. Don't risk rebuilding it yourself with sonnax kit. I would send it to a specialist at the same time they would pressure test it.

Also it could be worn bushings in tranny. That can be checked by reading adaptation values.