Exterior Mirror Indication

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

When the BLIS® or CTA system is active and an object is detected by the SODL or SODR, the BLIS®/ CTALED command message is sent from the SODL or SODR to the DDM or PDM. The DDM and PDM supply voltage and ground to illuminate their respective exterior mirror BLIS®/ CTALED based on messages received from the SODL and SODR.

Each time the vehicle is started, the SODL and SODR command the DDM and PDM to illuminate the exterior mirror BLIS®/ CTA Light Emitting Diodes (LEDs) for approximately 3 seconds, indicating the BLIS® and CTA system is operational.

If a BLIS® or CTA system fault is present, the exterior mirror BLIS®/ CTACTA Light Emitting Diodes (LEDs) remains off, the IPCBLIS® RTT illuminates and a message center warning displays BLIND SPOT SYSTEM FAULT.