"Put it park" does not seem like a good limp mode to me!5chn3ll wrote: ↑Mon Sep 16, 2019 10:28 am OK, here's the working theory, backed up by a ridiculously small amount of traction from teh Google: some OBD-II code scanners do not place nicely with the diagnostic ports on some vehicles. Kia, for example, has advised its techs to look for and disconnect OBD-II dongles, including code scanners and insurance company "good driver" trackers, because they can introduce signal degradation issues.
Multiple CAN-BUS errors will put the vehicle in "limp home" mode - there are several white papers out there explaining that the current bus implementation makes the system especially vulerable to attackers. I think my cheap-ass code scanner worked nicely as an "attacker" in our scenario. Interesting reading: https://rtcl.eecs.umich.edu/wordpress/w ... CCS_16.pdf
This doesn't explain Dr. S's problem with the rental as I doubt he had a code reader or dongle(funny word btw) in the rental, but maybe the rental company does?
Has the jeep recovered from the issue?