The HDS does not communicate with the BSI system

-1. Turn the vehicle to the ON mode.

-2. Check for DTCs with the HDS.

DTC (BSI)

Are any DTCs indicated?

YES 

Go to the indicated DTC troubleshooting .

NO 

Go to step 2.

-1. Test the 12 volt battery .

Is the 12 volt battery OK?

YES 

Go to step 3.

NO 

Charge or replace the 12 volt battery .

-1. Do the gauge control module self-diagnostic function .

Does the buzzer sound?

YES 

Replace the appropriate BSI radar unit .

NO 

Replace the gauge control module .