BMW X2 Massage Seat Goes Rogue, Won't Stop or Start

Had the same problem with my 2016 BMW X4 last winter. The massage function was acting up just like yours, unusual activation and wouldn't shut off. Turned out the connection cables under the seat were partially damaged, causing intermittent electrical signals. Got it checked at the garage, and they found that moisture had gotten into one of the main connectors, causing corrosion. The mechanic had to replace the wiring harness and the control module for the seat. Not a major mechanical issue, but definitely needed proper fixing to prevent further electrical problems. The repair wasn't too complex, but it took them about 4 hours to complete because they had to partially remove the seat to access the connections. If your issue is similar, make sure they check both the wiring and the control module, as either could be the culprit.

Thanks for sharing your experience! That sounds exactly like what I'm dealing with. Did you remember roughly how much the repair ended up costing you? Also curious if you've had any other issues with the seat functions since getting it fixed? I'm thinking about getting it checked out next week, just trying to get an idea of what I might be looking at cost-wise. Mine's probably similar to yours since the symptoms match perfectly.

Hey there! Just wanted to follow up about the repair costs. After seeing your question, I thought you'd be happy to know my issue got resolved pretty cheaply compared to what I initially feared. It ended up being just 95 € to fix, turned out it was just a faulty cable connection that needed sorting out. Nothing major like having to replace the entire control module, thank goodness! Since getting it fixed, the massage function has been working perfectly, no more unusual activations or getting stuck. It's been several months now, and I haven't had a single problem with any of the seat functions. The mechanic said these issues are pretty common with the electrical connections under the seats, but once properly fixed, they usually stay sorted. Really hope this helps give you a better idea of what you might be dealing with. Seems like our cars had the exact same symptoms, so fingers crossed yours is just a simple cable issue too! Let me know how it goes when you get it checked out.

Just got back from the mechanic and wanted to update you all! I took my X2 in yesterday, and you were spot on about the wiring issue. The mechanic found corroded cables under the seat, though in my case, it was a bit more extensive. Had to replace both the wiring harness and a small control unit. The whole thing cost me more than yours, around 280 bucks, but honestly, I'm just relieved it's fixed. They had it done in about 3 hours, and the massage function is working perfectly now. No more unusual activations or getting stuck! Really appreciate everyone's input here. It definitely helped me feel more confident about taking it to the shop, knowing what to expect. The mechanic was great too, showed me the damaged parts and explained everything clearly. Way better experience than my last repair shop visit! Thanks again for all the help. Feels good to have this sorted out finally!