BMW 330e Hybrid DEAD in Germany 🚨 We Rebuilt the HV Battery & Saved Thousands!

This BMW 330e G21 was transported from Germany after breaking down with a battery light on and the 12V system not charging. In today’s video from OGS Mechanics Hybrid & EV: We show why a 12V battery warning is NOT always the 12V battery itself Diagnose permanent errors in the SME (Battery Management Control Unit) Strip down the BMW’s high voltage battery Find faulty module readings (cell imbalance) Replace the damaged HV module & program the new SME Balance the pack, bench charge, and reassemble the battery Carry out a full road test and range test — final result: over 25 miles pure EV drive! ⏱️ **Timestamps** 0:00 – BMW Hybrid arrived from Germany with 12V charging fault 0:30 – Customer complaint: battery light on, 12V system not charging 1:00 – Why the 12V battery warning doesn’t always mean bad battery 2:00 – Diagnostic scan: errors in SME & HV battery modules 3:30 – Checking cell voltages, finding imbalance (cell 27, Pack 2) 5:00 – Preparing to strip the BMW high voltage battery 7:00 – Opening the HV battery, checking modules & sensors 10:30 – Identifying faulty module with abnormal voltage 12:00 – Sourcing and preparing a replacement module 15:00 – Installing new HV battery module & SME 18:00 – Programming and balancing the HV battery 20:00 – Reassembling & reinstalling the HV battery 23:00 – Regassing AC and bench charging battery 26:00 – Road test: range test and balance check 30:00 – Final results: 25 miles EV range, battery operating correctly 32:00 – Repair summary, cost explained, customer handover 📍 Visit Us: OGS Mechanics Units 9–14, Millers Yard Rear of 28 Long Lane London N3 2QG 📞 Contact: 07918 061897 📺 Watch Our Repairs in Action: 📌 Subscribe on YouTube → Weekly EV/Hybrid breakdowns, fixes & full diagnostics 📲 Follow the Behind-the-Scenes Garage Life: 🎵 TikTok: https://www.tiktok.com/@ogsmechanics 📸 Instagram: https://www.instagram.com/ogs_mechanics 📘 Facebook: https://www.facebook.com/share/15J54KFwjE/?mibextid=wwXIfr 👉 Don’t forget to Subscribe & hit the bell 🔔 for more real-world EV & Hybrid repairs with costs explained. #BMW330e #BMWHybrid #HybridRepair #EVRepair #HighVoltageBattery #CarRepair #ElectricCars #OGSMechanics #HybridBattery #WorkshopLife Music from #InAudio: https://inaudio.org/ Track Name.Sport Rock Energetic by Infraction [No Copyright Music] / Running Faster Music from #InAudio: https://inaudio.org/ Track Name.Sport Trap Rock Workout by Infraction [No Copyright Music] / Are You Ready