Battery Cooling Module Condensation Water Drain
Battery Cooling Module Condensation Water Drain
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.
Checking
- Turn off the ignition.
- Remove the luggage compartment floor.
- Bring the battery cooling module in the service position. Refer to => [ Battery Cooling Module, Service Position ] Battery Cooling Module, Service Position.
- Check the condensation water drain - 3 - for debris and make sure it is installed correctly.
Removing
- Remove the luggage compartment floor.
- Bring the battery cooling module in the service position. Refer to => [ Battery Cooling Module, Service Position ] Battery Cooling Module, Service Position.
- Remove the nuts - 2 - and - 3 - and move the heat shield slightly to the left.
- Unlock the plastic ring - arrows - and push the condensation water drain into the battery cavity.
- Remove the condensation water drain from the bracket.
Installing
Installation is carried out in the reverse order while observing the following.
• Replace the condensation water drain if the plastic ring is damaged.
• Caulk the plastic ring with silicon if it is loose.
- Note the installation position when attaching the plastic ring:
• The tabs - 1 - for the plastic ring must be positioned between both of the markings for the condensation water drain - arrows -.
- Attach the condensation water drain - arrow A - so that the tabs - 1 - engage in the opening - 2 - in the bracket.
- Install the grommet in the opening in the battery cavity. Insert the top tab - 4 - first and then lock the bottom one.
• If the grommet on the battery cavity is not completely caulked, caulk this position with for example silicone adhesive (D 176 001 A3). Refer to Electronic Parts Catalog (ETKA).
• The adhesive surface must be clean and free of grease when applying the silicone adhesive.
- Check that the condensation water drain is in the correct position.
• The tab - 2 - must face the seam - 1 - in the bracket.
- Install the remaining removed components.
- 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".