STX550 not Engaging Manual mode???

raptorthumper said:

Hi all. Guess what. I also had the exact same problem with manual mode not working intermittently. After some months not at all actually... (tiptronic not working)
It's now fixed AND I didn't replace the instrument cluster.

I pulled the instrument cluster out and inspected it and pushed on all the components and looked at the soldering. Nothing that I could see as a bad solder joint or blown component using my phone's camera magnification.

I put the cluster back in and the theft light came on briefly before going out. Went for a drive and everything is working perfect again.

I believe the power cycle did a full software reboot and fixed the problem. You need to remember that this is a CAN bus network going to the auto transmission and a digital message is what tells the transmission what it should try to do.

I don't think anyone needs to replace the cluster. Just pull it out press on components if you want to and put it back in after 10mins.

Now I'm wondering if just pulling the battery terminals off for a while would of fixed this???

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spiezzy said:

Update everything going fine I put the multi meter on the old cluster and went threw the 61 diodes on the circuit board and found the possible culprit and a dry solder joint might find a replacement diode and re solder the joint and see if it works just for the heck of it
will up date when I do this
cheers Pete

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jasonstx550 said:

update, put second hand cluster in,has fixed the problem,cant believe it ,have spent $2500 in the last 6 months at different shops to rectify problem
Cant thankyou enough for the info you have shared with me.

KMS on the new cluster are half what the original had on it so happy days.

More important for us is the manual mode for when we tow a boat going down bulli pass or ousley. Thankyou once again.

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