Quote:
Originally Posted by Stevens21234
it seems like every dealer just replaces the part instead of fixing it. It's like the tesla approach and it's not a good thing.
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This is a great point. It's also why BMWs have a semi-undeserved reputation for being super expensive to maintain. Unlike a good independent mechanic, dealer service departments aren't paid to do any hardcore troubleshooting. They just replace large, expensive assemblies until the problem goes away and then bill BMW or the customer.
Case in point is the old SMG III transmission in the previous M5/M6. It has a well-deserved reputation for being unreliable and requiring $10k+ replacement/repair bills. However, once the cars started dropping out of warranty in 2010 or so, indie mechanics started doing real troubleshooting on these gearboxes. In the end, it was determined that the vast majority of the issues were with improper lubrication of the clutch release bearing and/or improper hydraulic fluid levels in the SMG pump. Both fixes obviously cost significantly less than replacing the entire unit.