BMW X6 VANOS Woes Causing Rough Idle and Power Loss

Hey there! I went through something very similar with my 2014 BMW X4 last year. Based on your symptoms, it really sounds like a camshaft solenoid valve issue, that's exactly what I dealt with. The rough idle and power loss were my main symptoms too, and the check engine light was flashing just like yours. In my case, one of the solenoid valves had failed completely, and there was also a wiring problem affecting the power supply to the VANOS system. The repair wasn't something I'd call minor, they had to replace the faulty solenoid and fix some electrical connections. It's definitely not a DIY job and needs proper diagnostic equipment. The car ran like new after the fix, and the fuel economy went back to normal. I'd strongly suggest getting it checked at a shop that specializes in BMW engines, as they'll know exactly what to look for in the VANOS system. This isn't something you want to leave unattended, as it can lead to more serious engine problems if ignored.

Thanks so much for sharing your experience! This really helps, as it sounds exactly like what I'm dealing with. I'd love to know how much you ended up paying for the solenoid replacement and electrical work? Also, have you had any other issues pop up since getting it fixed? I'm trying to figure out if I should prepare for any other related problems that might come along with this repair.

Hey again! Happy to help update you on my experience. After getting the repair done, I can tell you it was absolutely worth every penny. The final bill came to 250 € for fixing the faulty solenoid valve and sorting out the power supply issue. Honestly, that was pretty reasonable considering how much better the car runs now. The best part? Since getting it fixed, my X4 has been running perfectly smooth, no more rough idle, power loss, or any of those annoying symptoms. The engine light hasn't flashed once, and my fuel economy is back to where it should be. It's like driving a completely different car! I know you were worried about potential follow-up issues, but I can honestly say I haven't had a single problem with the VANOS system since the repair. The key was getting it fixed right away before it could cause any additional damage to the engine. Just make sure you go to someone who really knows BMWs, it makes all the difference. Looking back, my only regret was waiting as long as I did to get it checked out. Once they fixed that Inlet VANOS issue, everything else fell right into place.

Thanks for the detailed follow-up! I actually just got back from the mechanic today, and thought I'd share my experience too. The repair wasn't as scary as I initially feared. Turned out my problem was also a faulty solenoid, but I also needed some wiring fixes. Total bill came to about 300 with parts and labor, a bit more than yours but still reasonable. The mechanic I found was actually great, totally different from my last experience. They diagnosed it quickly and had my car back to me the same day. You're right about how it feels like a different car now! The engine's running smooth, no more warning lights, and I can actually feel the power back when I accelerate. Just wanted to update everyone who might have similar issues, don't put it off like I initially did. Getting it fixed promptly really is the way to go. Really appreciate everyone's input here, helped me make the right decision and saved me from potentially bigger problems down the road.

2018 bmw m550i got a code for vanos not reaching set point I'm going to replace both intake and exhaust vanos actuator have no symptoms car runs fine plenty of power just a check engine light i could feel minor engine shake on first start up but that's it will keep you posted

Before replacing the VANOS actuators, consider checking the oil level and quality, as low or dirty oil can affect VANOS performance. Also, inspect the electrical connections to the actuators for any loose or corroded contacts. These simpler checks might resolve the issue without needing to replace parts. Let us know how it goes or if you have any questions!