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Removing and installing supply air duct for drive batteryA2 > < Removing and installing rear exhaust air duct for drive batteryA2

A4 Mk3

Removing and installing front exhaust air duct for drive batteryA2
Removing and installing front exhaust air duct for drive battery -A2-
Vehicles with a high-voltage system (hybrid vehicles)
For all work on vehicles with a high-voltage system, pay attention to the additional warnings for such vehicles → Chapter and → Electrical system; Rep. gr.93.
As work in the vicinity of high-voltage system components is necessary for the following sequence of operations, perform „Visual inspection of high-voltage components and cables for damage“ → Chapter and heed the „General warnings for working on high-voltage system“ → Electrical system; Rep. gr.93
  WARNING
Danger from unexpected engine starting
When performing general work on vehicles with a high-voltage system, switch off the ignition and remove the ignition key from the passenger compartment.
  WARNING
Working on vehicles with high-voltage wiring:
l  Do not support yourself or tools on high-voltage wiring or associated components --> this can damage the insulation.
l  High-voltage wiring must not be excessively bent or kinked --> this can damage the insulation.
l  The round high-voltage connectors are colour-coded with an external coloured ring and are provided with mechanical coding or guide lugs. It is important to observe this coding when joining up the round high-voltage connectors, otherwise the connectors can be damaged.
  DANGER!
Risk of fatal injury if high-voltage components are damaged.
Observe the following when working in the vicinity of high-voltage components or wiring:
t  It is not permitted to use cutting or forming tools, other sharp-edged tools or heat sources such as welding, brazing, soldering, hot air or thermal bonding equipment.
t  Before starting work, visually inspect the high-voltage components in the areas involved.
t  Before working in the engine compartment, visually inspect the power electronics -JX1-, electric drive motor -V141-, air conditioner compressor -V470- and high-voltage wiring.
t  Before working on the vehicle underbody, visually inspect the high-voltage wiring and covers.
t  Before working on the rear section of the vehicle, visually inspect the high-voltage wiring and the electro-box with the maintenance connector for high-voltage system - TW -.
t  Visually inspect all potential equalisation lines.
Check the following when making the visual inspection:
t  There must be no external damage on any component.
t  The insulation of the high-voltage wiring and potential equalisation lines must not be damaged.
t  There must be no unusual deformation of the high-voltage wiring.
t  All high-voltage components must be identified by a red warning sticker.
Removing
–  Switch off the ignition.
–  Remove the luggage compartment floor → General body repairs, interior; Rep. gr.70.
   
–  Unplug the connectors -1- and lay bare the wiring harness -arrows-.
  A87-11131
–  If fitted, screw out the bolts -1, 5- on the left and right.
–  Release the retainer tabs -2- on the left and right and detach the front exhaust air duct -3- from the battery cooling module -8-.
–  Carefully unclip the front exhaust air duct from the fasteners -6- of the air ducts -4- and -7- and detach.
  A87-11132
Installing
Install in reverse order; paying attention to the following:
  Note
If the fasteners -6- no longer hold or if one of the retainer tabs -1, 5- breaks off, the air duct can also be secured with bolts -2, 3, 4- at the battery cooling module -7-.
–  Start by clipping in the front exhaust air duct in the battery cooling module -7--arrow B-. Then clip into the left -1- and right -5- air ducts -arrows A-.
–  For electrical connections and routing, refer to → Current flow diagrams, Electrical fault finding and Fitting locations.
–  Re-install all other components removed.
–  Switch on the ignition.
–  Interrogate the event recorder of the air conditioner operating and display unit, Climatronic control unit -J255- and erase any faults displayed → "Guided fault-finding" function of vehicle diagnostic, testing and information system VAS 5051.
  A87-11133

Removing and installing supply air duct for drive batteryA2 > < Removing and installing rear exhaust air duct for drive batteryA2