BMW X6 Power Windows Dead, Regulator Issue Solutions

Hi there! I have some experience with BMWs, having owned a 2019 BMW X4 before switching to an X5. Similar thing happened to me, windows completely dead and error messages popping up. Turned out it was just a dying battery. These newer BMWs are super sensitive to battery voltage, and when it starts getting weak, electrical systems like windows act up. Had my local workshop test the battery, and yep, it needed replacement. Cost me around 290 Euro for parts and labor, but it fixed all the electrical gremlins. Before you head to the shop though, could you share: How old is your current battery? Are you seeing any other electrical issues (like dim lights, slow start)? Did this happen suddenly or gradually? These details would help confirm if you're facing the same issue I had. BMWs can be tricky with electrical stuff, so always good to get all the info first.

Thanks for the detailed response! I've got the same exact issues you described with my X6. Mine has 178359 KM on it since my last service about 2 months ago. The battery is actually the original one from 2021, so your suggestion makes a lot of sense. Come to think of it, I've noticed the start has been a bit sluggish lately, especially in the mornings. The window problem showed up pretty much overnight, worked fine one evening, completely dead the next morning. Definitely going to get the battery checked first before diving into more complex repairs. Thanks for saving me from potentially unnecessary window regulator repairs!

Hey again! Glad my previous response about the battery helped. After reading about your mileage and the original 2021 battery, I'm even more convinced it's the same issue I had. Those original batteries typically last about 2-3 years in these newer BMWs, especially with all the electronic systems they're running. You know what's funny? My X4 did the exact same thing, windows working perfectly fine one day, completely dead the next. And that sluggish start you mentioned? Classic sign of a failing battery. My car was doing the same slow-motion startup routine before everything went haywire. Quick tip from my experience: when you get the battery replaced, make sure they do a proper registration/coding of the new battery. These BMWs need that to function correctly. My first mechanic skipped this step, and I had weird electrical issues for a week until another shop fixed it properly. Also, since you mentioned your last service was 2 months ago, they probably didn't check the battery health then, it's not usually part of regular maintenance unless specifically requested. Let us know how it goes after you get it checked! Pretty sure you'll be back to normal once you sort out the battery situation.

Thanks so much for the extra info and that crucial tip about battery registration! I had no idea these BMWs needed special coding for a new battery, definitely wouldn't have known to ask for that. I've already called my local shop and scheduled an appointment for tomorrow morning. They quoted me around 300 for a new battery including the coding, which sounds about right based on what you paid. Actually, you're right about the last service, I remember now they didn't mention anything about the battery health. Just did the usual oil change and basic checks. Really glad I asked here before assuming it was a window regulator issue. Would've probably cost me way more for unnecessary repairs! Will update the thread once it's fixed in case anyone else runs into the same problem with their X6. Thanks again for all your help!