Test Requirements, AUDI Q7
- Vehicle must be cool.
- Check suspension, steering and steering linkage for excessive play and damage. Repair if necessary.
- Tread depth difference may be no more than 2 mm on an axle.
- Prescribed tire pressure
- Drive the vehicle onto the alignment rack without tension. Move the vehicle back and forth if necessary to relieve any tension on the axle components.
- Vehicles with rear axle steering: 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.
- Audi Q7 from product improvement: move the steering gear into the zero position. Refer to REAR AXLE STEERING GEAR, MOVING INTO ZERO POSITION .
- Vehicle accurately aligned, suspension bounced and rocked several times
- The steering wheel must be "evened out" into the center position before beginning the measuring and adjusting. Use Steering Wheel Scales: VAS 6458A for this.
- Vehicles with coil springs in curb weight position, "curb weight position means: the vehicle weight (fuel tank full as well as the washer fluid reservoir for the windshield/headlamp washer system, spare tire, vehicle tool kit and vehicle jack) without the driver." Refer to VEHICLES WITH COIL SPRINGS, CHECKING THE CURB WEIGHT POSITION FOR AXLE ALIGNMENT .
- Vehicles with air suspension at standard vehicle height: "standard vehicle height means: the vehicle level without the driver". Refer to STANDARD VEHICLE HEIGHT FOR AXLE ALIGNMENT ON VEHICLES WITH AIR SUSPENSION, CHECKING .
- Make sure that the sliding plates and turn tables are not touching the end stop when checking the wheel alignment.
- The measurement sensor must be properly adjusted and attached to the vehicle; observe device manufacturer's operating instructions.
- Perform wheel run-out compensation: permissible axial run-out of the wheel rims can exceed the specified toe setting tolerance. If compensation for wheel run-out is not performed, it will not be possible to obtain a correct toe-in adjustment.
- Over time, wheel alignment platforms and computer equipment can lose their original leveling setting and adjustments. They should be calibrated at least once a year as part of the maintenance.
- Handle highly sensitive units with care.
- If necessary, contact the manufacturer for instruction on the proper use of the equipment.