High-voltage Service Disconnect
The service disconnect is a plug or switch that isolates the high-voltage battery for safe work.
What is High-voltage Service Disconnect?
It splits the battery circuit. Only trained staff should use it. Its location is shown in rescue sheets. Manufacturers describe exact procedures, often including switching off the car, disconnecting the 12-volt battery, removing the service plug and waiting several minutes. Technicians then confirm zero voltage with approved meters and wear insulated gloves. Emergency services use similar cut points to make crashed vehicles safe.
How it works
Removing it breaks the HV circuit physically.
Why it matters for your car
Wait the specified time for capacitors to discharge. Verify absence of voltage before work.
Other terms
- A-Pillar
- AC Charging
- AdBlue Warning Light
- Body Control Module (BCM)
- Breakover Angle (Ramp Angle)
- CCS Connector (Combined Charging System)
- Cell-to-Pack Battery Design
- DC-DC Converter
- Digital Key (Phone As Key)
- Exhaust Leak
- Feeler Gauge
- Flex-Fuel Vehicle (E85)
- Gas Strut (Gas Spring)
- Grab Handle
- Litres Per 100 Km (l/100 Km)
- Load Securing
- Matrix LED Headlights
- Misfuelling (Wrong Fuel)
- Potentiometer
- Silicone Spray