Rear Axle Steering Gear, Removing And Installing, AUDI Q8: Installing

Courtesy of AUDI OF AMERICA, LLC

Install in reverse order of removal and Note The Following: 

-- Bring the rear axle steering into the installation position, install the :T40326  :

Right Side of Vehicle: 

• Pay attention to the labeling -2- "rechts/right".
• The "arrow" points in the direction of travel.
• The rear axle steering -1- is positioned on the points -3- on the locking tool pin.
• The pin of the locking tool must engage in the holes -4- on the subframe.

Left side of vehicle 

Courtesy of AUDI OF AMERICA, LLC

• Pay attention to the labeling -3- "links/left".
• The "arrow" points in the direction of travel.
• The half round mounts -2- from the rear axle steering -4- must be positioned on the pin of the locking tool.
• The pin of the locking tool must engage in the holes -1- on the subframe.

-- Tighten the threaded connections for the rear axle steering.

-- Remove the :T40326  .

-- Lifting the wheel bearing in curb weight position. Refer to WHEEL BEARING, LIFTING TO CURB WEIGHT POSITION, VEHICLES WITH COIL SPRING ) or at standard vehicle height. Refer to WHEEL BEARING AT STANDARD VEHICLE HEIGHT, LIFTING VEHICLES WITH AIR SUSPENSION ).

-- Install the tie rods. Refer to TIE ROD, REMOVING AND INSTALLING .

• Pay attention to the procedures after installing the rear axle steering.

Procedures After Installing the Used Rear Axle Steering. 

-- After installing, drive the vehicle onto the alignment rack.

-- Then measure the vehicle. Refer to AXLE ALIGNMENT .

Procedures After Installing a New Rear Axle Steering. 

After installing new rear axle steering, activate the Rear Axle Steering Control Module -J1019- :

-- Connect the Vehicle Diagnostic Tester.

-- Switch the ignition on.

-- Select and start the Diagnostic  operating mode.

-- Select the Test plan  tab.

-- Select the Select individual test  button and select the following tree structure consecutively:

• Diagnostic-Capable Systems 
• Rear axle steering control module J1019 
• 00CB - Rear axle steering control module functions 
• 00CB - Replace control module 

-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.

-- Then measure the vehicle. Refer to AXLE ALIGNMENT .