Enabling blind spot alerts
Your vehicle can alert you to vehicles in or approaching your blind spot. The feature can be turned on or off in assist settings.
Important
Changing driver support settings
Make sure you understand how changing vehicle settings affects its behavior. This is particularly important for features that affect the level of assistance the vehicle can provide.
Press the vehicle symbol 
in the bottom bar and go to Assist.
Go to Blind spot information.
Enable or disable blind spot alerts.