Audi A4: Warnings when Working on Vehicles with High Voltage System
Vehicles with a High-Voltage System (Hybrid Vehicles)
Working on Vehicles with High-Voltage System (Hybrid Vehicles)
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.
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.
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.
Performing a Visual Inspection of Damage to High Voltage Components and Cables
Extremely Dangerous Due to High-Voltage
The high-voltage system is under high-voltage. Electrocution can cause death or very serious personal injury from damages high-voltage components and high-voltage cables.
- Perform a visual inspection of the high-voltage components and the high-voltage cables.
- Never use tools that are for cutting, deformed, or sharp edged.
- Never use welding, soldering, thermal adhesive or hot air.
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Introduction
The purpose of this repair manual is to provide service
advisors and technicians with the basic knowledge needed to
ensure professional and competent procedures.
Note
Only the careful study
A/C Technology Basic Principles
Physical Principles
The four known states of water also apply to air
conditioning system refrigerants.
1 - Gaseous (invisible)
2 - Vapor
3 - Liquid
4 - Solid
SEE MORE:
Wheel Housing Liner
Overview - Front Wheel Housing Liner
Overview - Wheel Housing Liner
1 -
Drive Axle Cover
Removing and installing. Refer to
→ Chapter "Drive Axle Cover, Removing and Installing".
2 -
Bolt
2 Nm
Quantity: 6
3 -
Front Wheel Housing Liner
Removing and instal
Keys
Key set
Fig. 26 Your vehicle key set
Vehicle key
You can unlock and lock your vehicle with the vehicle
key.
Mechanical key and release buttons for
the mechanical key
A mechanical key is integrated in the vehicle key.
To remove it, press the release button and remove
the mechanical key.
Usi
