I've got a 2011 C Class W204. Recently had an issue with ABS, Traction Control, Cruise Cruise Control etc all fail. Replaced the ABS sensor and Reluctor ring which has fixed those issues. However now I get tire pressure warning messages all the time even after the system has been reset. This is the ABS controlled TPMS i.e. it doesn't have individual tyre pressure monitors in each tyre, it uses the ABS sensors to monitor wheel rotation. Anyone have ideas on how to fix this problem, tyre pressures are always OK when checked.