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
- Calibration Board - Head-Up Display:VAS6658
Conditions
-- The windshield projection control module must be calibrated under 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 :VAS6658 on the center supports -1 and 2- for the sun visor.
Calibrating Procedure
The Vehicle Diagnostic Tester is connected.
-- Select the Diagnostic mode and start the diagnosis.
-- Select the Test plan tab.
-- Select the Select individual test button and select the following tree structure consecutively:
- Body
- Electrical system
- 01 - OBD-capable systems
- 82 - Windshield Projection Head Up Display Control Module - J898
- 82 - Windshield projection control module, functions
- 82 - Head up display calibration
From here, the Vehicle Diagnostic Tester advances the calibration procedure forward.
-- After calibrating the windshield projection control module successfully, end "calibration", turn off the ignition and disconnect the diagnostic connector.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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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