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Mild hybrid systems are not new. They were some of the first hybrid vehicles to be put into production. The 48-volt mild hybrid system is now becoming more common among some vehicle makers. What considerations are there for repairing a vehicle equipped with a 48-volt mild hybrid system? Let’s see what BMW has to say.
BMW first introduced the 48-volt mild hybrid system in July 2020 stated in ST-2007 48-Volt Electrical System a technical training manual from BMW. This system reduces emissions, improves the automatic engine stop/start, engine off coasting and aids the combustion motor with an eBoost function.
Per BMW:
- "The 48-volt system will be included on all future vehicles equipped with a B58 engine."
- "48-volt warning labels and cables are now purple in color for easy identification of the 48-volt system."
The 48-volt system can be put into maintenance mode by opening the hood. The 48-volt system powers down until the hood is closed. For some repairs, the 48-volt system needs to have the negative battery cables disconnected.
The OEM Hybrid And Electric Vehicle Disable Search features a battery layout and step-by-step directions to locate the procedure to disconnect the negative battery cables.
Additional I-CAR Collision Repair News you may find helpful:
- 48-Volt Mild Hybrid Systems
- Collision Information Website Access: BMW/Mini
- Hybrid And Electric Vehicle Article Hotspot
- Step-By-Step: Accessing BMW/Mini Repair Information
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Article validated in 2024