Safety Precautions

WARNING:

Danger of electric shock from live parts
Risk of serious burns or death
Health risks for persons with medical devices/life-support systems

NOTE: Before starting to work on the high-voltage system, a high-voltage technician must isolate the high-voltage system from the power supply. See HIGH-VOLTAGE DISABLE .

NOTE: For regular maintenance work, the high-voltage system does not need to be isolated from the power supply.

NOTE: Only High-Voltage Technicians (HVT) are permitted to isolate the high-voltage system from the power supply. The Electrically Instructed Person (EIP) is permitted to perform defined items of work according to instructions and under the supervision of the HVT.

Work on high-voltage components must only be performed following isolation of the high-voltage system from the power supply by the HVT.
All work on high-voltage vehicles must only be performed by persons who are at least qualified as EIPs.
When performing each task on a high-voltage vehicle, the high-voltage components in the task/work area must be inspected visually.
The high-voltage technician ascertains that the system is de-energised and secures it to prevent reactivation.
The high-voltage technician ensures that the system cannot be reactivated by storing the remote control, operating lever (remote control replacement in the ignition lock in the case of "Keyless Entry and Go"), maintenance connector and pilot line connector in a safe place.
The high-voltage technician identifies the vehicle as de-energised by attaching a corresponding sign.
Persons with medical devices must not carry out any work on vehicles with a high-voltage system. Medical devices include internal analgesic pumps, implanted defibrillators, pacemakers, insulin pumps and hearing aids.
The high-voltage cables must not be extensively bent or kinked
Anything anomalous or unclear must be reported to the HVT or the High-Voltage Expert (HVE).
Working close to high-voltage components and high-voltage lines using cutting, deforming and sharp-edged tools or heat sources, such as welding, soldering, hot air and thermal bonding, is prohibited.

NOTE: Definition of isolating the HV system from the power supply applies to isolating the system from the power supply at the high-voltage battery (rear) and power electronics (front).

Isolate from power supply
Ensure that system cannot be switched back on again
Verify safe isolation from power supply