Assembling and setting-up calibration unit VAS 721 001 — VW

Assembling and setting-up
calibration unit
VAS 721 001
The overhead view camera may have to be recalibrated following repair work on the vehicle. In detail, this is the case after:
Renewal of at least one of the cameras
Renewal of
control unit for overhead view camera
J928
Flashing of the software of the
control unit for overhead view camera
J928
Recording of data sets in the
control unit for overhead view camera
J928
Repair work on components in which a camera is installed, or components which affect the installation position of the camera
Running gear adjustment
Offset in overlapping area of individual camera images
Suspension height adjustment on one axle by more than 5 mm
Suspension height adjustment of complete vehicle by more than 10 mm
Prerequisites for calibration on vehicle
Camera lenses must always be clean. Clean camera lenses with a damp cloth only.
Check camera images on
display unit for front information display and operating unit control unit
J685
. If camera image is impaired due to damaged camera, renew the respective camera. If image is crooked, check if respective camera is secured correctly.
Both exterior mirrors must be folded out.
Parking brake is applied.
Steering wheel in zero position, wheels point straight ahead.
All doors and rear lid are closed.
There is nobody in the vehicle.
Vehicle is not loaded (curb weight).
Battery charger is connected; battery charger must not be within the field of view of the cameras.
Ignition is switched on.
System is active and is displayed on
display unit for front information display and operating unit control unit
J685
.
Vehicle must not be moved during calibration.
Requirements regarding calibration unit/calibration environment
Level calibration surface
No objects within surrounding area of calibration field to prevent erroneous line detection
Uniform lighting (no projectors or direct lighting), avoid excessive variations in lighting
Special tools and workshop equipment required
Calibration unit
VAS 721 001
Vehicle diagnostic tester
Overview of assembled
calibration unit
VAS 721 001
WARNING
Make sure there is no light reflection on the
calibration unit
VAS 721 001
.
Light reflections will impair the image recognition of the cameras and might make calibration impossible.
Left calibration pattern
From
calibration unit
VAS 721 001
Front overhead view camera
R243
Calibrating
Chapter
Right calibration pattern
From
calibration unit
VAS 721 001
Right overhead view camera
R245
Calibrating
Chapter
Rear overhead view camera
R246
Calibrating
Chapter
Left overhead view camera
R244
Calibrating
Chapter
Setting up
calibration unit
VAS 721 001
Roll out calibration patterns from
calibration unit
VAS 721 001
on calibration surface.
Attach fastening strips to corners of calibration patterns.
The arrows on calibration patterns must point in the same direction (direction of vehicle travel)
Align calibration patterns parallel at a distance
a
= 2000 to 2500 mm ± 5 mm.
It might be helpful to draw a centre line between the calibration patterns to ease centring of the vehicle at a later stage.
Crosshairs
1
on the calibration patterns indicate position of the vehicle's front axle.