Battery Cooling Module, Service Position
Battery Cooling Module, Service Position
With high voltage systems (hybrid vehicles)
Read and follow all of the supplemental warnings for all work performed on vehicles with the high voltage system.
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 => [ Visual Inspection of High-Voltage Components and Cables for Damage ] Visual Inspection of High-Voltage Components and Cables For Damage and always follow the warnings when working on the high voltage system.
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.
How to handle high voltage cable:
• 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.
• Color-code the round high voltage connector with an external color ring and code them mechanically using the guide- or code tabs. Always make certain that the coding matches when connecting the round connector in order to avoid mechanically damaging the high voltage connector.
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 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 the cover 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.
Bring the battery cooling module into the service position
- Turn off the ignition.
- Remove the luggage compartment floor.
- Remove the rear outlet air guide for the traction battery. Refer to => [ Traction Battery Rear Outlet Air Guide ] Traction Battery Rear Outlet Air Guide.
- Remove the front outlet air guide for the traction battery, refer to => [ Traction Battery Front Outlet Air Guide ] Traction Battery Front Outlet Air Guide.
- Remove the air guide for the battery coolant module, refer to => [ Traction Battery Inlet Air Guide ] Traction Battery Inlet Air Guide.
- Disconnect and free up the connectors - 1, 2 -.
- Remove the nuts - arrows -.
- Cover Traction battery (A2) with Audi fender protector (V.A.G 1917A) - 2 -.
- Remove the battery coolant module - 1 - and lay it on the covered battery module as illustrated.
Risk of damaging refrigerant lines and hoses.
• Do not stretch, kink or bend refrigerant lines and hoses.
Installing
Installation is carried out in the reverse order while observing the following.
- Reinstall the previously removed component.
- Switch on the ignition.
- After installing, check and, if necessary, erase the displayed faults in the DTC memory for the Climatronic control module (J255) control head and the battery regulation control module (J840). Refer to the Vehicle diagnostic tester in "Guided Fault Finding".