The hazard warning lights should always be used when you stop on or near a roadway in an emergency.
The hazard warning lights warn other drivers that your vehicle is a traffic hazard and that they must take extreme caution when near it.

Depress the hazard warning flasher and all the turn signals will flash. The hazard warning indicator lights in the instrument cluster flash simultaneously.
NOTE
• The turn signals do not work when the hazard warning lights are on.
• Check local regulations about the use of hazard warning lights while the vehicle is being towed to verify that it is not in violation of the law.
Horn
HomeLink Wireless Control SystemCrash Zone Sensor Removal/Installation [Standard Deployment Control System]
WARNING:
Handling the crash zone sensor improperly can accidentally deploy the air
bags and pre-tensioner seat belts, which may seriously injure you. Read the
air bag system service warnings and cautions before handling the crash zone
sensor..
1. Switch the ignition to off.
...
Negative Battery Cable Disconnection/Connection [Skyactiv G 2.0]
WARNING:
Before removing the SRS air bag system-related parts, always disconnect the
negative battery cable and wait for 1 min. or more to allow the back-up power
supply to deplete its stored power..
Required procedure after negative battery cable disconnection/connection
...
Units
Electric current
A (ampere)
Electric power
W (watt)
Electric resistance
ohm
Electric voltage
V (volt)
Length
mm (millimeter)
in (inch)
...