Perhaps EU/UK systems operate differently than US systems? The Tire pressure sensors part numbers are exactly the same for both the US E60 (5 series) and the US E70 (X5). I don't think BMW USA would develop 2 different systems for similarly developed chassis'; but I may be mistaken. If not, then should the E70 TPMS operate the same as the E60 5 series?

https://www.ecstuning.com/News/BMW_E...nitor_Sensors/

https://www.ecstuning.com/News/BMW_E...nitor_Sensors/