I have a 2013 XJL Portfolio Edition with the above message. Due to quirks in the owners driveway/garage, local shop "Turned Off" the TPMS as low pressure was required for access to garage. Does anyone know how I can turn it back on?

 

Had once same issue with my van. However i always filled tyres up before roaduse.
As far i know you need factory tool (JLR SDD) to enable/disable TPMS.
(Not sure if its doable from "engineering mode" of centre display?)