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VANOS system on by BMW!
11-10-2017, 07:49 AM
Post: #1
VANOS system on by BMW!
Hello! I suspect the VANOS system on by BMW is not working. Tell me how to determine the fault and what to do?
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11-10-2017, 10:14 AM
Post: #2
RE: VANOS system on by BMW!
VANOS is the variable valve timing system, which changes the cam / gear position depending on the driving situation. One of the more common failures is the solenoids that control gear position. If one or both go bad it may put a trouble code into the ECM. IOW, you need to have someone scan the system as a starting point. The diagnostic codes will point you toward what needs replacement.

Here's a short article so you can see how it works.

https://www.eeuroparts.com/blog/557/bmw-...explained/

After reading up on the subject you may decide this type of repair is beyond the average DIY person but at least you will have enough education so you can choose a shop to handle it.
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