Rear Axle Steering Gear, Aligning, AUDI Q7
When the rear axle suspension is first installed at the "factory", the "check rear axle steering gear orientation" is "not necessary".
When the rear axle suspension is first installed at the "factory", the "check rear axle steering gear orientation" process is also "not possible" with the Locking Tool:T40326 .
The rear axle suspension test with the Locking Tool:T40326 is only possible and necessary if the rear axle suspension was installed by a service dealer.
This applies when a new rear axle suspension is installed "and" when a previously installed rear axle suspension is installed.
Special Tools And Workshop Equipment Required
- Locking Tool:T40326
The rear axle steering must be aligned under the following conditions.
- If there are drivability problems.
- If there is high or uneven tire wear.
Procedure
-- Versions with air suspension: remove the nuts -arrows- and the cover -1- for the air supply unit.
-- Remove the left and right bolt -2- for the rear axle steering -3- and replace with new.
-- Remove the bolt -4- and replace with new.
-- Lightly install the bolts by hand.
-- 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
- 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 .
-- After aligning the rear axle steering drive the vehicle on the wheel alignment platform.
-- Switch off the ignition when the vehicle has come to a stop. This is the only way to ensure that the rear axle steering is in the straight-ahead position.
-- 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:
- Suspension
- Steering
- 01 - OBD-capable systems
- CB - Rear axle steering control module J1019
- CB - Rear axle steering control module functions
- CB - Adaptation
-- Start the selected program and follow the instructions on the Vehicle Diagnostic Tester display.
-- Then measure the vehicle. Refer to AXLE ALIGNMENT .
Tightening Specifications
- Refer to OVERVIEW - REAR AXLE STEERING