Battery Cooling Module, Removing And Installing: Notes

Read and follow all of the supplemental warnings for all work performed on vehicles with the high voltage system, refer to HIGH VOLTAGE VEHICLES SAFETY PRECAUTIONS and WORKING ON VEHICLES WITH HIGH-VOLTAGE SYSTEM (HYBRID VEHICLES) .

If it is necessary for the following procedure to perform work in the vicinity of high voltage components, "perform a visual inspection of the high voltage components and cables for damages" (Refer to HIGH VOLTAGE COMPONENTS AND CABLES, CHECKING FOR DAMAGE .) and "always follow the warnings when working on the high voltage system", refer to WORKING ON VEHICLES WITH HIGH-VOLTAGE SYSTEM (HYBRID VEHICLES) .

WARNING:

Risk of unintended engine start

The ignition must be turned off and the ignition key must remain outside of the vehicle when working on vehicles with a high voltage system.

WARNING:

Handling high voltage cables:

Do not stand on or place tools on high voltage cables and their components as it may damage the cable insulation.
Never bend or kink high voltage cables forcefully as it may damage the cable insulation.
The round high voltage connectors are color coded with an external color ring and are mechanically coded using the guide- or code tabs. Always make certain that the coding matches when connecting the round connector in order to avoid any mechanical damage the high voltage connector.

CAUTION:

There is a risk of electrocution from damaged high voltage components.

Observe the following when working around high voltage components and high voltage wires:

Never work around high voltage components and cables with cutting, deformed, or sharp edged tools, or heat sources such as welding or soldering tools, heated air, and thermal glue.
Inspect the high voltage components visually before beginning.
Perform a visual inspection of the Electric Drive Power and Control Electronics -JX1-, the Electro-Drive Drive Motor -V141-, the Electrical Air Conditioning (A/C) compressor -V470- and the high voltage lines when working in the engine compartment.
Perform a visual inspection of the high voltage lines and covers when working on the underbody.
Perform a visual inspection of the high voltage lines and the Electrobox with the High Voltage System Maintenance Connector -TW- when working in the luggage compartment.
erform a visual inspection on all of the potential equalization cables.

Observe the following items when performing the visual inspection:

The components do not display any signs of external damage.
The high voltage cable insulation and the potential equalization cables are not damaged.
The high voltage cables do not display any abnormal deformations.
Every high voltage component is marked with a red warning label.

Disable the High Voltage System

CAUTION:

Risk of electrocution

Death or serious bodily injury by electric shock.

The high voltage system may only be activated by qualified personnel (Audi high voltage mechanic).
Make sure that the high voltage system is completely disabled. Make sure the vehicle is de-energized using "Guided Fault Finding" on the Vehicle Diagnostic Tester.
The qualified personal (Audi high voltage technician) determines the voltage and secures the system from restarting using the Service Disconnect Lock :T40262 . Keep the ignition key and the High Voltage System Maintenance Connector -TW- safely with the qualified personal to secure the system from restarting.
The Audi high voltage technician should put a sign on the vehicle to identify it as a high voltage vehicle.

NOTE:

Disable the high voltage system:

Connect the vehicle diagnostic tester.

Select the Guided Fault Finding mode.

Using the GO TO button, select the following menu commands

Functions/Component Selection

Body

Electrical Equipment

OBD-Capable System

8C - Hybrid Battery Management -J840

8C - Hybrid Battery Management, Functions

51 - Disable the High Voltage System (refer to the appropriate service information.)

Before beginning work on the high voltage system, a high voltage technician must disable the high voltage system, refer to the High Voltage System, Disabling (HYBRID) service information. .
Use the respective processes for work performed on the high voltage system, for which the system is required to be switched on. For further information about the high voltage system, refer to WORKING ON VEHICLES WITH HIGH-VOLTAGE SYSTEM (HYBRID VEHICLES) .