BMW X6 Washer System Dead: Quick Diagnostic Guide

As a BMW X4 (2011) owner, I had almost identical symptoms last year. The washer pump completely failed due to a corroded wire connection at the relay. Initially, I also thought it was linked to the headlight washers, but the main issue was much simpler. The mechanic found that water had seeped into the connector housing near the pump, causing corrosion at the terminals. They had to replace the wiring harness section and the pump relay. It wasn't a major repair, took about 2 hours to fix. The wipers started working perfectly after that. For your X6, I'd suggest checking the fuses first, but it sounds very similar to what I experienced. It's not a serious issue that affects vehicle safety or performance, just an inconvenience that needs attention. The wiring harness is usually the culprit in these cases.

Thanks for sharing your experience! That's really helpful, as it sounds exactly like what I'm dealing with. I'll definitely check those fuses first before heading to the shop. Just curious, do you remember roughly how much you ended up paying for the repair? Also, has everything been working smoothly since then, or have you noticed any other quirks with the washer system?

Hey there! Glad I could help with my previous advice. I actually just got mine fixed last week, and you're not going to believe it, it was exactly what I suspected! The mechanic found the same issue with the corroded wire connection at the relay that I mentioned before. Total bill came to 165 € for fixing the cable connection and pump relay. Money well spent, if you ask me! Everything's working like a charm now, the headlight cleaning system fault that was bugging me is completely gone. No more warning messages on the dashboard, and all washer functions are back to normal. It's such a relief not having to deal with that anymore! And to answer your question about other quirks, nope, absolutely zero issues since the repair. The system's been working flawlessly for both the windshield and headlight washers. Just make sure you get a competent mechanic who knows their way around BMW electrical systems. These kinds of problems can be tricky to diagnose if you don't know what you're looking for. Let me know how it goes with yours, sounds like it'll be a similar fix!

Just got back from the mechanic, and I can't thank you enough for your advice! You were spot on about the wiring issue. Turns out there was corrosion in almost the exact same spot you mentioned. The repair was quick and straightforward, took them about 2.5 hours total. Bill came to slightly more than yours at 195 €, but totally worth it. The mechanic actually showed me the corroded parts, and wow, it was pretty bad! I've been testing everything for the past couple of days, and the system's working perfectly now. Windshield washers, auto wipers, headlight cleaners, all back to normal. Such a relief not having to deal with this anymore. Really appreciate you sharing your experience, saved me from spending way more at the dealership. Sometimes these seemingly complex problems have relatively simple solutions. Think I've found my new go-to mechanic too!