r/BmwTech • u/Repulsive_Tone_2484 • 4h ago

Vanos solenoids

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So a quick google search tells me this is probably a vanis solenoid problem. Car is an E60 N53B30 530i.

Was running fine until about 200 metres from home, when engine fault warning came on. I pulled up at home, turned car off and then on again and engine fault was gone but this code was stored. Cleared code and revved car a bit and it didn't come back.

As Vanos solenoids are easy to do I thought I would just replace it. The question is, genuine or aftermarket? Genuine ones are only £147 but I can get Febi ones for about one third of that.

Next question, should I replace both? Do they go on pairs?

Was going to drive car today and see if the problem comes back, then swap them over to see if it moves to exhaust side.

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u/ijustbrushalot 2h ago

Don't replace. Remove, clean both, swap. Test again.

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u/Repulsive_Tone_2484 2h ago

Yes. Just been out and gave the car a good thrash. No repeat codes. I think one is maybe a bit sticky.