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This is the F40 purge/vent valve.
Posted: Fri Feb 27, 2026 8:16 am
by andy_bmw_1965
Hello, I was hoping someone could tell me where the vent/purge valve is on a 2020 BMW M135i and how to replace it. Since mine went on the diagnostic, I'm considering taking matters into my own hands to see if I can fix it.
Re: This is the F40 purge/vent valve.
Posted: Fri Feb 27, 2026 8:17 am
by maturo99
Conveniently located above the intake manifold, it is simple to replace.
Re: This is the F40 purge/vent valve.
Posted: Fri Feb 27, 2026 8:18 am
by andy_bmw_1965
Thanks! I believe I've found it. Would it be okay to simply replace the battery without disconnecting it?
Re: This is the F40 purge/vent valve.
Posted: Fri Feb 27, 2026 8:18 am
by maturo99
Replacing that shouldn't need disconnecting the battery, no.
Re: This is the F40 purge/vent valve.
Posted: Fri Feb 27, 2026 8:19 am
by andy_bmw_1965
I appreciate that; after checking, everything appears to be in its proper place; does anyone have any suggestions for removing it?
Re: This is the F40 purge/vent valve.
Posted: Fri Feb 27, 2026 8:20 am
by maturo99
Changing out the rubber vibration damping mount on the valve is as easy as sliding it up and off the metal bracket. To make removal and refitting easier, spritz on some lubricant.