BMW M2 Air Valve Issues Causing Multiple Engine Problems

Hey there! I've got some experience working on BMWs, had a similar issue with my 2021 M4 last year. The symptoms you're describing sound really familiar. I took mine to the workshop when I noticed the engine check light and those jerky movements. Turned out the hose connection from the pump to the valve was shot. Got it fixed for about 175 Euro, the repair itself didn't take too long, maybe half a day. I'd recommend getting it checked soon because these symptoms can lead to bigger problems if left unchecked. The M series are great cars but they need proper attention when these things pop up. Just to help you better, can you tell me if you've noticed any unusual noises when starting the car? Also, when exactly did these symptoms start showing up? Knowing the mileage would help too. BTW, I've got some experience with BMWs, not a pro mechanic but I've dealt with a few issues over the years.

Hey, thanks for jumping in! Last service was done just a month back at 42180 KM. I've noticed a slight whirring noise during cold starts, but it's pretty inconsistent. Haven't heard anything during normal driving though. The symptoms started appearing about a week ago, right after some heavy rain, if that helps. Was your repair just the hose replacement, or did they need to do anything with the valve itself? I'm hoping it's something simple like in your case. Just want to get an idea of what I might be looking at cost-wise before taking it to the shop.

Hey again! Interesting that your issues started after heavy rain, that actually adds up with what I experienced. In my case, the moisture had gotten into the connection points and caused some corrosion, which is why the hose needed replacing. For my M4, they initially just replaced the hose, but during inspection, they found that the valve itself had some minor damage too. I decided to get both fixed at the same time, ended up being around 400 Euro total with parts and labor. The whirring noise you mentioned during cold starts? That's exactly what I heard too. The rain connection makes me think you might be dealing with something similar. Water probably found its way into places it shouldn't be. The good news is that if you catch it early (which sounds like you have), you can prevent any serious damage to other components. Given that your car is a 2023 model, you might still be under warranty. Definitely worth checking that before paying out of pocket. My M4 was just out of warranty when this happened to me, typical timing right? Keep me posted on what you find out at the shop. These BMW M series are fantastic machines, but they can be a bit sensitive to these kinds of issues.

Thanks so much for all that detailed info about the M4 repair, super helpful! You're right, I did check and my M2 is still under warranty, which is a huge relief. Just scheduled an appointment with the dealer for tomorrow morning. The rain connection you mentioned makes total sense, especially since the timing matches up perfectly with when my problems started. I'm feeling a bit better knowing that your issue was resolved without any major complications. Really hoping mine turns out to be something similarly straightforward with the hose or valve. Will definitely keep you updated once I get the diagnosis. Thanks again for sharing your experience, it's given me a much better idea of what to expect when I take it in. These M series really are amazing cars, even with their occasional quirks!