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.
DTC B18DB
DTC B18DB : Left Side BSI Radar Unit Received The Audio/Navigation Unit Failure Information
NOTE: Before you troubleshoot, review the general troubleshooting information .
| DTC Description | DTC |
|---|---|
| B18DB Left Side BSI Radar Unit Received The Audio/Navigation Unit Failure Information |
DTC (BSI)
- BSI radar unit connector check
-1. Check for poor connections or loose terminals at the BSI radar unit 6P connector.
Is the BSI radar unit 6P connector OK?
YES
Go to step 2.
NO
Repair or reconnect the connector securely.
- BSI radar unit check
-1. Turn the vehicle to the ON mode, and read the HDS.
DTC Description DTC B18DB Left Side BSI Radar Unit Received The Audio/Navigation Unit Failure Information Is DTC B18DB indicated?
YES
Go to the audio system or navigation system general troubleshooting. If the symptom is still present, replace the appropriate BSI radar unit.
NO
Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .
NO RELATED
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.