Blind Spot Monitor Calibration Required
2013-2019 Cadillac XTS 3.6L V6
Description
The blind spot monitoring system requires recalibration after sensor replacement or rear body repair.
Symptoms
- BSM system not functioning after repair
- Sensors not detecting vehicles
- False alerts or missed detections
- Calibration warning message
Common Causes
- Sensor replaced without calibration
- Rear bumper repair altered sensor alignment
- Rear collision shifted sensor mounting
- Sensor firmware update needed
Diagnostic Steps
- Verify sensor mounting alignment
- Perform BSM sensor calibration
- Check for rear body damage affecting sensor angle
- Use manufacturer calibration procedure
- Test system with dynamic road test
Repair Notes
Perform blind spot monitor calibration per manufacturer procedure.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0009Rear Center Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
B2403 on Other Vehicles
Cadillac ATS
2013-2019 2.0L Turbo I4
Cadillac ATS
2013-2019 2.5L I4
Cadillac ATS-V
2016-2019 3.6L Twin-Turbo V6
Cadillac CT4
2020-2024 2.0L Turbo I4
Cadillac CT4
2020-2024 2.7L Turbo I4
Cadillac CT4-V
2020-2024 2.7L Turbo I4
Cadillac CT4-V Blackwing
2022-2024 3.6L Twin-Turbo V6
Cadillac CT5
2020-2024 2.0L Turbo I4
Common Questions
What does code B2403 mean on a 2013-2019 Cadillac XTS?
B2403 stands for "Blind Spot Monitor Calibration Required". The blind spot monitoring system requires recalibration after sensor replacement or rear body repair.
What are the symptoms of B2403 on a Cadillac XTS?
Common symptoms of B2403 include: BSM system not functioning after repair, Sensors not detecting vehicles, False alerts or missed detections, Calibration warning message.
What causes B2403 on a 2013-2019 Cadillac XTS?
Common causes of B2403 include: Sensor replaced without calibration, Rear bumper repair altered sensor alignment, Rear collision shifted sensor mounting, Sensor firmware update needed.