Originally Posted by shata
Voted, 105k knock on wood / Original but she gets her coolant changed on regular basis.
330I 2006 - She got about 3 changes in 105k, Everything still looks good from looks of it.
Coolant changes have nothing to do with pump failure. Heat loading causes the pump to fail.
The only way to be assured when to preemptively change the pump out is to have the car scanned regularly with a BMW-reading scan tool (i.e. NOT on an OBD2 reader) and look for pump low-speed fault codes. Once the codes start to appear, change the pump because it will fail eventually.