stefanfuchs1
BMW 7 Hybrid Electrical Nightmare: Dashboard Gone Wild
General electrical malfunction
Failure of various systems in the vehicle
Many fault memory entries relating to overvoltage
Weak battery when starting the engine
4 comment(s)
Thanks so much for sharing your experience! This really sounds similar to what I'm dealing with. I'm honestly relieved to hear someone else went through this and got it fixed. Good call on the hybrid specialist, I'll definitely avoid regular mechanics for this one. Just wondering, do you remember roughly how much you ended up paying for the whole repair? Also, has everything been running smoothly since the fix, or have you noticed any other issues pop up?
Glad I could help! Just wanted to update you, I actually got my car back from the specialist last week. They fixed the overvoltage issue completely by replacing the degraded battery, which was the root cause of all those electrical gremlins. Cost me 290 € for the whole job, which honestly wasn't as bad as I expected given how complex these hybrid systems can be. Since the repair, my car's been running like a dream, no more warning lights, no starting issues, and all systems are working perfectly. It's such a relief not seeing those error messages anymore! They also did a full diagnostic check to make sure everything else was in order. My advice definitely stands, going to a hybrid specialist was totally worth it. These guys know exactly what they're doing with the complicated electrical systems in our cars. Let me know how you get on with yours!
Thanks for the follow-up! I took your advice and finally got my car checked out at a certified hybrid specialist. You wouldn't believe it, they found the exact same issue with the battery system! My repair ended up being a bit pricier at 350 €, but honestly, it was worth every penny. The whole experience was so much better than my last mechanic visit. These guys really knew their stuff and explained everything clearly. They had it fixed in just three days, and I've had zero issues since picking it up last Thursday. No more Christmas tree dashboard, and the car starts perfectly every time! Really appreciate you sharing your experience, it saved me from wasting time and money at a regular garage. The specialist route was definitely the way to go. My BMW's running better than it has in months! Thanks again for all your help!
Hey there! I faced almost identical issues with my 2018 BMW 5 Series Hybrid last winter. The symptoms matched yours exactly, dashboard lit up, unusual system failures, and starting problems. Initially, my mechanic misdiagnosed it as a simple battery issue. Turned out the main hybrid battery was severely degraded and affected the entire electrical system. The voltage regulator was also damaged as a result. Required a full hybrid battery replacement and regulator fix, definitely a serious repair job that took about four days to complete. I'd strongly suggest getting it checked by a certified BMW hybrid specialist rather than a regular mechanic. These hybrid electrical systems are complex and need specific diagnostic tools to properly identify the issue. A general mechanic might miss the underlying problem. Hope this helps with your decision.