I had been complaining for a while about the Start/Stop feature when driving the GF’s 2018 Tiguan. She finally got sick of it herself and allowed me to disable it with my trusty VCDS cable.
Guide here on how to do it for MQB platform cars: http://www.vwwatercooled.com.au/forums/f197/disable-stop-start-vcds-tweak-94276.html
I tried the first option temperature method but the ECU wouldn’t accept the value saying it was out of range. The second voltage option worked like a charm. Took it out for a test drive and could see when it wanted to switch off because the A with the circle around it in the MDF screen came on but the engine never stopped.