I have mine in the shop for a coolant leak. Mine is in between the heads (v8) in what they called the valley drip pan. It's under the induction (air intake) between the heads.
just went over 62k miles losing a quart of coolant/month; where are the usual suspect areas to inspect ?
Check above. Its on a 7 series but it gives you an idea of the work involved. Bentley just released there repair manual for the 5 series. Might want to pick it up if your going to tackle this job yourself.
This is a design flaw that BMW will never admit. Similar to Porsche and there IMS bearing issue which if it goes out 95% of the time the whole motor needs to be replaced. Engineers have even studied the IMS bearing from Porsche and laugh at the design saying no way in hell it will last. Most are amazed how some people get well over a 100K on it. Aftermarket bearing was design and has shown great results over the years. Yet Porshce won't even work with them. Because if they did they'd be admitting the problem. Similar to BMW's coolant pipe. This company has a way to cut huge amounts of time off the repair but a BMW dealership chances are will never put that part in your car.