FixVault

Check Hazard Light Operation

WARNING: This page is about a different car, the 2006 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE CHART

Step Check Yes No
1 CHECK HAZARD LIGHT OPERATION. 
Make sure the hazard light blinks when hazard switch is turned to ON.
Does the hazard light blink? Go to step 2.  Check the hazard light circuit.
2 CHECK KEYLESS ENTRY CONTROL MODULE OUTPUT SIGNAL. 
  1. Remove the key from the ignition switch.
  2. Open the driver's window, then close all doors and the rear gate.
  3. Lock all doors with the keyless transmitter or door lock switch to activate the security system.
  4. Unlock all doors using the door lock switch.
  5. Measure the voltage between the keyless entry control module harness connector terminal and the body ground when any door is open.

    Connector & terminal 

    (B176)No. 1, 13 - Chassis ground: 

Is the voltage 1 - 4 V? Check the harness for open circuits or shorts between the keyless entry control module and the turn signal light. Replace the keyless entry control module.