I have now figured out how to read and partly how to interpret the metrics of the indirect TPMS on the e-up. We get a "tyre emergency" and a "pressure diffusion" value for each wheel. Since the values are relative, I would like to transmit them to the app as raw data and only display a percentage (100% means everything is ok). Would it be ok to just introduce an if-statement in the app to detect whether the vehicle type is an e-up and change the default displays accordingly? sharkcow PS: I feel this value (incl. a useful alert value) would be very beneficial: I just found out that I had lost quite some pressure over the 2 years I own the vehicle without TPMS reacting. The metrics on OBD showed a nicely measureable change however, which could easily be used to have OVMS notify me. (Yes, I should have checked the pressure regularly, but hey: what's a TPMS for?!)