Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Windshield Projection Head Up Display Control Module, Calibrating
Special tools and workshop equipment required
- Vehicle Diagnostic Tester
- Calibration Board for Head-Up Display VAS721003: VAS721003
Conditions
-- The windshield projection control module must be calibrated during the following conditions:
- The Windshield Projection Head Up Display Control Module -J898- was replaced.
- The windshield was removed and installed.
- "No or incorrect basic setting/adaptation" is stored in the DTC memory.
Preliminary Work
-- Move the vehicle onto a secure flat surface.
-- Apply the parking brake - the vehicle must not move during the measurement.
-- Fold down the left and right sun visors, disengage them and move them to the side.
-- Engage the Calibration Board for Head-Up Display VAS721003: VAS721003 on the center support -1 and 2- for the sun visor.
Calibrating
- The Vehicle Diagnostic Tester is connected.
-- Select the Diagnostic mode and start.
-- Select the Test plan tab.
-- Press the Select individual tests button and select the following one after the other:
- Body
- Electrical Equipment
- 01 - OBD-capable systems
- 82 - Windshield Projection Head Up Display Control Module - J898
- 82 - Windshield projection control module, function
- 82 - Calibrating the head up display
-- Start the selected program and follow the instructions in the Vehicle Diagnostic Tester display.
-- After calibrating the windshield projection head up control module successfully, end "calibration", turn off the ignition and disconnect the data link connector.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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