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High-voltage system - General information - Edition 02.2021
00 – Technical data
1
Safety information
(VRL015196; Edition 02.2021)
⇒ m1.1 easures for working on vehicles with high-voltage sys‐
tem”, page 1
⇒ p1.2 recautions when working in the vicinity of high-voltage
components”, page 2
⇒ p1.3 recautions when using testers and measuring instru‐
ments during a road test”, page 2
⇒ p1.4 recautions when working on the cooling system”, page
2
1.1
Safety measures for working on vehicles with high-voltage system
Danger to life from high voltage
The high-voltage system is under high voltage. Severe or fatal
injury from electric shock.
– People having electronic medical devices for life support or
health maintenance in or on their bodies are prohibited from
working on the high-voltage system. Such medical devices
include internal analgesic pumps, implanted defibrillators,
pacemakers, insulin pumps and hearing aids.
– High-voltage system must be de-energised by a suitably
qualified technician.
Risk of injury from unexpected engine/motor start
On electric and hybrid vehicles, it can easily be overlooked that
the vehicle is in “ready” mode. There is a risk of parts of the
body becoming trapped or drawn in.
– Switch off ignition.
– Always store the ignition key outside the vehicle.
Risk of damage to high-voltage cables
Improper handling of high-voltage cables or high-voltage con‐
nectors may result in damage to their insulation.
– Never support body weight on high-voltage cables or high-
voltage connectors.
– Never support any tools on high-voltage cables or high-volt‐
age connectors.
– Never kink or severely bend high-voltage cables.
– Always observe the coding when connecting high-voltage
connectors.
1. Safety information
1
English 
