I also have a 2007 N52KP with GM6 transmission (328xi built 3/14/2007, with 133,000 miles). The "Oil Wear Error", BMW Fault Code 578E, was saved in EGS memory at about 11 years after build date. That Fault does NOT light ANY warning light, and the only way you know it's there is by doing a Functional Jobs scan in INPA, or scanning the EGS with a BMW-specific code reader that can read transmission fault codes.My 2007 328i auto has 64,000 miles. I've been told conflicting reports on how often to have the transmission serviced. How often should the Transmission be serviced? I would like the car to last at least another 100,000 miles.
60K miles is what Miller is recommending for newer ZF trannies. Do it even if you've missed the first one.My 2007 328i auto has 64,000 miles. I've been told conflicting reports on how often to have the transmission serviced. How often should the Transmission be serviced? I would like the car to last at least another 100,000 miles.
I have NO basis for an opinion on that issue, as I have always had a shop do transmission repair or rebuild, and never examined the wear parts/ clutches, the valve block, and only have a vague concept of how the solenoids function. I always maintained older cars, and changed my own transmission fluid & filter every 3 or 4 years (less than 50k miles). Tranny usually had a clutch failure (usually Reverse ;-) @ ~ 100,000 miles or 10-15 years in spite of proper maintenance.The theory..."Do it every 50k or don't do it at all."
From the service and warranty manual for my 2009, page 9 : "AutomaticTransmission (not shown in CBS): Maintenance work: Replace ATF at intervals of 100,000 miles."My only observation in response to that theory is: "Why did BMW/GM tell people the tranny was "lifetime" sealed, with NO established service interval for fluid & filter changes, and yet include "Oil Wear Fault" (whether by oil quality sensor or mileage/age) in the possible diagnostic codes?