Heat Output And Temperature Door Activation, Checking

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On vehicles with a high voltage system (hybrid vehicles)

Observe all of the additional warnings for all work performed on vehicles with the high voltage system. Refer to HIGH VOLTAGE VEHICLES SAFETY PRECAUTIONS and HIGH VOLTAGE SYSTEM GENERAL WARNINGS for Hybrid .

If it is necessary for the following procedure to perform work near high voltage components, "perform a visual inspection of the high voltage components and cables for damages" (refer to PERFORMING A VISUAL INSPECTION OF DAMAGE TO HIGH VOLTAGE COMPONENTS AND CABLES ) and "always follow the warnings when working on the high voltage system". Refer to HIGH VOLTAGE SYSTEM GENERAL WARNINGS for Hybrid .

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 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.
Perform 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.

Working on a high voltage system when activated or with the ignition turned on

CAUTION:

The engine may start unexpectedly when performing work while the ignition is turned on or when the ready mode is activated and may cause poisoning in enclosed spaces. Be aware of body limbs and/or clothing when clamping or pulling.

Perform the following steps before turning on the ignition:

Move the selector lever into position P.
Activate the parking brake.
Switch off ignition.
Open the engine hood.
Connect the charging unit for example Battery Charger VAS5903 to the battery jump start terminal for the 12V vehicle electrical system
Switch on the ignition.

-- Charge the vehicle battery, for example, using the Battery Charger VAS5903 in the battery support mode to minimize the number of automatic starts during the test- and measuring procedures when the ready mode is active. Refer to Battery Charger VAS5095A SUPPORT MODE and HIGH VOLTAGE SYSTEM GENERAL WARNINGS for Hybrid .

-- Move the selector level into position "P", activate the parking brake and arrange the necessary tools for testing and measuring procedures that require the ready mode to be active or that require the ignition to be on, so that they cannot come into contact with the turning components in the engine and so that they are not in the vicinity of the turning components of a running engine.

NOTE:

Also move the selector lever into position "P" and activate the parking brake for testing and measuring procedures which require the ignition to be on, but do not require the ready mode to be active.

The ready mode is displayed in the Instrument Cluster Control Module -J285- above the "power meter". Refer to Owner's Manual.

Activate and deactivate the ready mode. Refer to Owner's Manual (consult the display in the Instrument Cluster Control Module -J285-).

-- Activate the ready mode (observe the display in the Instrument Cluster Control Module -J285-). Refer to Owner's Manual.

All vehicles