E39- ISTA won’t connect, but it used to

[bwdysart]

I had got it up and running like 6 months ago, and then the cable sat in my toolbox for a while since the car was fine, now I need it again and it appears it won’t communicate with any modules after it asks for the vin. My computer does still read the cable in device manager. What could’ve changed?

[328 Power 04]

Did you check COM port number? Windows 10 / 11 loves updating that. It also changes the COM port number and the latency sometimes.

[bwdysart]

Did you check COM port number? Windows 10 / 11 loves updating that. It also changes the COM port number and the latency sometimes.

It still says com9 in the config. Do I need to set the cable to com9 in device manager too?

I’m trying to remember what all I did to make it work in the first place it’s been so long haha

[328 Power 04]

It can be any COM port number, but they have to match in both places.


Also in Device manager, make sure you set the latency to 2ms.