Only problem it's not strictly OBD2 compliant and I've only ever seen
Carsoft and one other Russian homebrew program talk to the ECU apart from
BMW's own diags software. Same with the later E36s too.
You're probably right.
My mistake. The position I gave was for an E34, but 523 makes it an E39, in
which case the OBD connector has a similar round screw top, but is on the
right hand side, near the fillers for the w/screen washer reservoirs.
AFAIK on the E39 they are OBD2 compliant.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.