leafRead tyre pressures
The Drive tab has individual tyre-pressure tiles where the vehicle supplies them. Select psi, bar or kPa in Settings → Units. Compare pressures with the vehicle’s own tyre placard and manual under the specified conditions; the app does not choose the correct pressure for your load and tyres.
Try the alternate method only when needed
Some later ZE1 cars do not answer the normal meter request. Settings → Connection includes “Read tyre pressures the alternate way”, and the card can suggest it when appropriate. The alternate method listens for a supported broadcast instead of assuming the normal diagnostic reply is available.
This switch is off by default. It can add listening time to the polling cycle. If it does not produce readings, record your model, region and adapter for support rather than repeatedly changing unrelated car settings.
Why older cars may be blank
The implemented meter requests have better support on ZE1 than on the earlier families. A blank tile does not establish a failed sensor or mean the tyre has zero pressure. Use a proper gauge to check an actual pressure concern. Leaf Pro does not currently perform TPMS relearning or sensor registration.
Read the 12 V card in context
The 12 V card displays available voltage and current. A car in READY or charging may have its DC-DC converter supplying the low-voltage system, so the displayed voltage is not equivalent to a rested battery test. One reading cannot diagnose a weak auxiliary battery.
If you have starting problems or repeated electrical warnings, arrange an appropriate battery and charging-system test. Keep high-voltage and 12 V systems distinct; they serve different roles and require different checks.