Initial Inspection and Diagnostic Overview
Test requirements:
Explanatory notes on weight codes used in production (PR numbers)
The suspension version installed in the vehicle is indicated by the PR number on the vehicle data sticker.
Example of a vehicle data sticker
In this example, the vehicle is installed with standard suspension, version 1 BA - arrow -.
The vehicle data sticker can be found at the rear of the spare wheel well and in the customers Service Schedule.
1BA = Standard suspension
1BE = Sports suspension (20 mm lower than 1BA)
1BD = Sports suspension (Audi S4)
1BR = Comfort / heavy-duty suspension (13 mm higher than 1BA)
1BV = Sports suspension (Quattro GmbH)
^ Sensors must be properly attached and adjusted; refer to operating instructions of equipment manufacturer.
^ Tread depth difference of no more than 2 mm on one axle.
^ Tires inflated to correct pressures
^ Make sure that the sliding plates and turntables are not touching the end stop when checking alignment.
^ Vehicle unladen *see note
* "Unladen" means: the weight of the vehicle ready for the road (full tank, full windshield washer/headlight cleaner fluid container, spare wheel, vehicle tools and vehicle jack), without driver.
Spare wheel, vehicle tool kit and jack must be in their specified locations.
^ Vehicle accurately aligned, suspension bounced and rocked several times
^ Check suspension, steering and steering linkage for excessive play or damage and service if necessary.
^ Perform wheel rim runout compensation: A certain amount of axial runout at the wheel rims is permissible, but this may already exceed the specified toe-in tolerance. In such cases it is not possible to set the toe-in correctly without compensating for the wheel runout.
Wheel alignment must be checked:
^ If handling or road behavior is poor,
^ If accident damage has occurred,
^ If suspension components have been removed,
^ If tires are worn unevenly.