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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning (Refrigerant R134A Servicing) (2 Of 2) >> 87 Air Conditioning >> Warnings When Working On Vehicles With High Voltage System >> Working On Vehicles With High-Voltage System (Hybrid Vehicles)

Working On Vehicles With High-Voltage System (Hybrid Vehicles)

WARNING:

Extremely Dangerous Due to High-Voltage

The high-voltage system is under high-voltage. Death or serious bodily injury by electric shock.

-- Individuals with electronic/medical life- and health sustaining machines in or on their person cannot perform any work on high-voltage systems. Life- and health sustaining machines are for example pain killer pumps, implanted defibrillators, pacemakers, insulin pumps, and hearing aids.

-- Have the high-voltage system de-energized by a qualified person.

WARNING:

There is a Risk of Injury from the Engine Starting Unexpectedly

On electric - hybrid vehicles an active ready mode is difficult to identify. Parts of the body can be clamped or pulled.

-- Turn off the ignition.

-- Place the ignition key outside of the vehicle interior.

CAUTION:

Risk of Damaging the High-Voltage Cables

Misuse can damage the insulation of high-voltage cables or high-voltage connectors.

-- Never support objects on the high-voltage cables and the high-voltage connectors.

-- Never support tools on the high-voltage cables and the high-voltage connectors.

-- Never sharply bend or kink the high-voltage cables.

-- When connecting pay attention to the coding of the high-voltage connectors.

Further information about the high-voltage system. Refer to SAFETY PRECAUTIONS or the appropriate service information. .