2007 BMW 525xi Base 6 Cyl 3.00L
Steering & Suspension
Alert code TPMS malfunction comes on after replacing, mounting &balancing all 4 tires.
The repair shop also replaced the front arm with bushings & Belt Tensinor
Assuming that all the TPMS sensors are good that are inside each wheel, then maybe the system just has to be relearned using a TPMS tool that many (but not all) shops have. The majority (if not all) volume tire shops have this tool.