Rear Refrigerant Lines to Battery Cooling Module
Rear Refrigerant Lines to Battery Cooling Module
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.
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.
Removing
- Turn off the ignition.
- Drain the refrigerant circuit.
- Remove the left aerodynamic trim panel.
- Remove the EVAP canister.
- Open the retainer - arrow A -, pull it to the right - arrow B - and free up the wire - 1 - on the bracket.
- Remove the nuts - arrows - and move the heat shield - 1 - slightly downward.
- Remove the nut - arrow - from the bracket for the refrigerant pipes.
- Remove the nuts - arrows - and bolts - 1, 2 - and disconnect the refrigerant lines.
- Remove the bolts - 1, 3 - and disconnect and remove the refrigerant lines - 2, 4 -.
• Close all open lines and connections on the refrigerant line with suitable caps (avoid dirt and moisture from entering the system).
Installing
Installation is carried out in the reverse order while observing the following.
• Follow the instructions for installing the O-rings. Refer to => [ Refrigerant Circuit O-rings ] Refrigerant Circuit O-Rings.
• Following attachment, check routing of refrigerant pipes. They must be inserted in holders provided and not make contact with other components.
- Replace the O-ring seals - 4 - depending on the version. Refer to Electronic Parts Catalog (ETKA).
- Clean the refrigerant line connections - 3, 5 - and inspect them for damage.
- Make sure the O-ring fits correctly inside the grooves - 4 - on the respective mounts.
- Inspect the alignment pin - 2 - (not present on all connections) for damage and make sure that it is seated correctly.
- Tighten the bolts - 1 -.
- Evacuate and fill the refrigerant circuit.
- Install the remaining removed components.
- Switch on the ignition.
- Check the event memory of the Climatronic control module (J255) , and erase any displayed malfunctions using the Vehicle diagnostic tester in "Guided Fault Finding".
- Operate the A/C system after filling the refrigerant circuit. Refer to => [ A/C System, Operating after Filling Refrigerant Circuit ] A/C System, Operating After Filling Refrigerant Circuit.