Thanks for all the detective work! I checked the 121 fuse and (unfortunately) it looks fine. I really wished that were the issue so this could be a cheap and easy fix.gta3005 wrote: ↑Thu Sep 29, 2022 5:10 am Well I've got good news and bad news. Codes are currently clear, so that's good. But unfortunately the guy that did it isn't willing to detail what he did to fix it, so thats not great news.
Here's my guess. Replacing the fan doesn't seem to have immediately fixed the issue, so I wouldn't start with this. This leaves 2 other options we haven't looked into yet. First, I did find a thread on this forum with someone having a similar issue. They determined it to be the fan fuse at position 121 (not the original fuse we checked for the fan relay). The other option is the relay itself. There's a possibility my guy was able to test the relay in the vehicle and force it to function again. The one thing that leads me to believe this was the solution is he did mention the relay was probably bad and should be replaced soon (after inspection passes). He did also mention the relay should be matched to the vehicle through software, so you might create some other issues if you just replace the relay and don't have someone to reprogram the vehicle afterwards.
YIKES! Thanks for the update and sorry for the hassle you're dealing with. I'm so curious what BMW would attribute to the entire motor failing and needing to be replaced as a unit, rather than just replace a few parts, but I doubt they'll want to share details, and/or admit issues with their motor.gta3005 wrote: ↑Mon Nov 28, 2022 7:29 pm They said they were having difficulty translating the codes so they needed to send them to BMW headquarters. Heard back today that it needs a new gas motor. Service rep was going thru the numbers (~5g labor, waiting on motor cost) and i reminded him the gas motor is still under warranty. So that's where I'm at
AH! I had no idea there were separate warranties since I bought this from a used dealer, but boy do I feel better now. I've had nothing but questionable interactions with my local BMW dealer so I avoid going to them at all costs and do most maintenance myself, but I'm on the hunt for a reputable shop in case of major issues like this. Thanks for the insight!