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Autopapyrus · BYD Seal (1st generation)
https://autopapyrus.com/guides/byd/seal/windshield-replacement-with-adas-calibration/
Compiled automatically from service literature and owner experience. Specs are for the typical configuration — check them against your exact car before you start.

BYD Seal (1st generation): Windshield Replacement with ADAS Calibration

The BYD Seal has a multifunction front camera mounted in the upper part of the windshield behind the rearview mirror, along with a millimeter-wave radar behind the front bumper. The camera supports lane keeping, traffic sign recognition, emergency braking and automatic path correction. After a windshield replacement, a static or combined ADAS calibration is mandatory. Without it, the safety systems work incorrectly or shut off completely. The procedure requires specialized equipment and should be performed at a certified shop with BYD experience.

Difficulty: Hard Time: 4-6 hours (including adhesive cure time and ADAS calibration) Steps: 12 Tools: Specialized windshield removal kit (cut-out wire or knife for cutting the sealant), polyurethane adhesive gun, ADAS calibration stand with reference target panels, diagnostic scan tool (OBD-II), laser level for aligning the targets, suction cup handles for holding the glass, gloves, surface degreaser, polyurethane primer

Part

  • 🔩 Windshield with ADAS front camera mount (confirm the exact OE part number with an official BYD dealer, as the 2026 model is new). Polyurethane windshield adhesive/sealant (fast-cure or standard-cure)

Step by step

12 steps
  1. Preparation: Disconnect the 12-volt auxiliary battery (accessed through the front trunk panel or under the hood, depending on the AWD configuration) and wait 5 minutes for the airbags to deactivate. The high-voltage traction battery does not need to be disconnected for a windshield replacement as long as you do not touch the orange power cables.
  2. Trim removal: Remove the A-pillar trims (held by plastic clips) and disconnect the ADAS front camera connector (usually in the overhead console behind the rearview mirror). Remove the rearview mirror from its bracket on the glass (the mount may be screw-type or snap-type). Be careful not to damage the camera.
  3. Cutting out the old glass: From inside the cabin, cut through the polyurethane bead around the entire perimeter with a cut-out wire or a long knife. Work with a helper: your partner supports the glass from outside with suction cups so it does not fall and damage the hood. Leave a thin layer of old sealant (1-2 mm) on the frame, since it serves as a base for the new adhesive.
  4. Preparing the opening: Trim the remaining old polyurethane down to an even surface and degrease the frame perimeter with an alcohol-based cleaner. Apply primer (adhesion activator) to the cleaned surface and let it dry for 5-10 minutes, following the adhesive manufacturer's instructions.
  5. Preparing the new glass: Check that the camera bracket on the new glass is complete (if the camera is integrated into the glass, make sure the connector is intact). Degrease the inner edge of the glass and apply primer. Install spacer blocks (if the design calls for them) to keep the gap even around the perimeter.
  6. Applying the adhesive: Using the gun, lay a continuous bead of polyurethane adhesive around the entire perimeter of the glass (or around the perimeter of the opening, depending on the technician's method). The bead should be 8-12 mm thick with no gaps. Use either a fast-cure system (Safe Drive-Away Time of 30-60 minutes) or a standard one (SDAT of 2-4 hours, full cure in 24-72 hours).
  7. Installing the glass: With a helper, use the suction cups to carefully set the glass into the opening, aligning the camera bracket with the original position. Press the glass evenly around the whole perimeter so the adhesive spreads. Do not let the glass shift, because it cannot be repositioned once the adhesive sets.
  8. Securing and curing: Tape the glass to the body with painter's tape to prevent it from moving. Allow the adhesive to reach its initial set time (30-60 minutes for fast-cure systems, 2-4 hours for standard ones) at a temperature of 20-25°C and humidity of 40-70%. Do not open the doors abruptly or slam them, because the pressure change can shift the glass before the adhesive cures.
  9. Reassembling the trim: After the adhesive has set, plug in the front camera connector, install the rearview mirror on its bracket, and refit the pillar trims. Reconnect the 12-volt battery.
  10. Static ADAS calibration: At the shop, the car is placed on a level surface with controlled lighting. Before calibration, the technician checks the tire pressure (per the placard on the driver's door pillar), checks that the washer fluid reservoir is full for correct vehicle weight (for an EV, the battery charge level is not critical), and makes sure there is no cargo in the cabin. Using laser measuring tools, the reference target panels are positioned at the exact specified height and distance from the camera (usually 2-4 meters, with the angle and height strictly per the manufacturer's specification). With the OBD scan tool, the calibration procedure is started through the factory BYD menu. The system automatically recognizes the targets and saves the new camera alignment parameters. The process takes 30-90 minutes.
  11. Dynamic recalibration (if required): Some BYD Seal ADAS functions require a final dynamic calibration. This is a straight drive on a road with clear lane markings at 30-90 km/h (19-56 mph) for 10-20 km (6-12 miles) without sudden maneuvers. The system completes the camera and radar setup on its own under real driving conditions.
  12. Final check: Use the scan tool to read the trouble codes. There should be no active faults in the ADAS module. Test the assist functions: Lane Keeping Assist, Forward Collision Warning, Adaptive Cruise Control (ACC) and Traffic Sign Recognition (TSR). Make sure no ADAS warning lights appear on the instrument cluster.

Common mistakes and warnings

  • The BYD Seal is an electric vehicle with a high-voltage traction battery (up to 400-800 V). Although replacing the windshield does not require working on the HV system, it is strictly forbidden to touch the orange power cables under the hood or near the battery compartment without proper training and Class 00 (1000 V) insulated gloves. ADAS calibration is a critical safety procedure. Incorrect calibration, or skipping it, causes emergency braking, lane keeping and other systems to work incorrectly, which greatly increases the risk of a crash. If you do not have a calibration stand and diagnostic equipment with current BYD software, contact an official dealer service center or a specialized auto glass shop with ADAS certification. Full cure of the polyurethane adhesive takes 24-72 hours. During this period, avoid hard acceleration, hard braking, rough roads and high-pressure car washes.