BMW X4 Engine Problems: DISA Valve Issues & Solutions

Hey there! I have some experience with BMWs and had a similar issue with my 2019 X3 last year. Really frustrating when these things happen! Actually, I was experiencing almost identical symptoms, rough idle, sluggish acceleration, and that dreaded check engine light. After taking it to my trusted workshop, they diagnosed a faulty DISA valve. It was causing improper air intake management, which explained all those symptoms. The repair involved replacing the entire DISA unit, which set me back about 280 Euro. But honestly, the car's been running like new since then. I also own a BMW 3 Series, so I'm fairly familiar with how these engines behave when something's not right. Could you share your engine variant and mileage? That would help me give you more specific advice about what to look out for. Also, have you had any other warning lights or noticed any unusual sounds?

Thanks for sharing your experience! Mine has 7651 KM and just had its last service done. I'm dealing with the same issues you described. It's good to know replacing the DISA valve fixed it for you. Did you notice any warning signs before the problems started? Also, how long did the repair take? I want to get this sorted quickly since it's really affecting my daily drives. Really appreciate the help from fellow BMW owners who've been through this!

Hey again! Always happy to help out another BMW owner. Yeah, I remember clearly how it started with my X3. Actually, before the major symptoms kicked in, I noticed the engine would occasionally hesitate when accelerating from a stop. It was subtle at first, like a tiny problem that would come and go. I honestly brushed it off initially, thinking it was just the cold weather or something. Big mistake! The repair itself wasn't too time-consuming, took my mechanic about 2-3 hours total. They had the parts in stock, which helped speed things up. But I'd suggest getting it checked ASAP since you're experiencing the full set of symptoms already. No point risking more damage, especially with a fairly new car like yours. From my experience with both my BMWs, these engines are pretty solid, but when the DISA valve starts acting up, it's best to tackle it right away. Mine got progressively worse over about two weeks before I finally took it in. The stalling at idle was what finally pushed me to get it fixed, scared me half to death when it happened at a busy intersection! Let me know how it goes after you get it checked. I'm curious if it turns out to be the same issue as mine. These newer BMWs are great cars, but they sure can be finicky sometimes!

Thanks so much for all the detailed info! It's super helpful hearing from someone who's dealt with the exact same thing. Those initial symptoms you mentioned, that slight hesitation from a stop, I've definitely been experiencing that too. Honestly, I was doing the same thing, trying to convince myself it wasn't a big deal! After hearing about your experience, I've already called my mechanic and scheduled an appointment for tomorrow morning. Don't want to risk having it stall on me like what happened to you! Really glad you mentioned the repair time too, helps me plan my day better knowing it's roughly a 2-3 hour job. It's such a relief knowing this is probably fixable with just a DISA valve replacement. Was getting worried it might be something more serious. My mechanic quoted me similar to what you paid, so that seems about right. I'll definitely keep you posted on what they find. Thanks again for taking the time to share your experience, it's exactly what I needed to hear to stop procrastinating on getting this fixed!