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This is the DMTL pump running for emmissions. No cause for concern
The N62 engine in your 7 series has a few reasons why that would happen. We would have to look at it to determine what is actually happening to get a solid diagnosis.
More than likely it will need a door lock tumbler and lock assembly.
In most cases, you are dealing with an alternator bracket oil seal. This seal is under direct oil pressure, and it is very important to handle this ASAP to avoid engine damage. Repair estimate is approximately 950 dollars.
More than likely there is internal transmission issue. At the most extreme circumstance- the motor and transmission mounts may be so bad that its pulling the shifter linkage causing this as well.
Howdy, More than likely you have something wrong with the MOST bus, or the CIC/ASK module. This is something that most normal shops will not be able to handle, unless they specifically work on BMW's and have BMW diagnostic equipment.