[Radhaz75]

I bought my 2019 330i used 3 years ago. From day 1, the Sport/Comfort/Eco Pro buttons have suck like the previous owner spilled something in there. While the driving modes will change, most days the buttons will not actually depress and click like the TSC and PDC buttons above. On more humid days, I can press them once and they generally unstick for that drive and push and click normally with a bit of a sticky feeling. But by the next drive they are restuck.

From everything I've read, these buttons are indeed an actual manual click as opposed to the ones around the iDrive controller which are a haptic click.

So I was wondering what kinds of products would be likely to be safe to spray into there to attempt to clean up the stickiness (and might have a chance of actually dissolving it), CRC contact cleaner? Brake clean? holding a can of compressed air upside down and squirting it? something else?