I have my M5 at the dealership for the all too common VANOS failure (vehicle went to limp home mode, increased emissions warning, rpm limited, etc.). There are no indications that the VANOS pump is bad and all diagnosis points to the high pressure line. But should I have the solenoids replaced while the tech is in the vicinity? I have 77K miles on the odometer of my 07 M5. This is the first time I have had any problems with the VANOS.