Side Airbag Sensor And Curtain Airbag Sensor

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

How to disconnect:
CAUTION: When pulling the slide lock or disconnecting connector, be sure to hold the connector, not the harness.
1. Push the lock arm.
2. Holding outer part, pull it one step in the direction of arrow.
  
  Fig 1: Pushing Lock Arm Of Side Airbag Sensor And Curtain Airbag Sensor Connector
  Courtesy of SUBARU OF AMERICA, INC.
3. Push the lock arm again.
4. Holding outer part, pull it in the direction of arrow to disconnect the connector.
  
  Fig 2: Disconnecting Side Airbag Sensor And Curtain Airbag Sensor Connector
  Courtesy of SUBARU OF AMERICA, INC.
How to connect:
CAUTION: Be sure to insert the connector in until it is locked. Then pull it gently to make sure that it is locked.

Holding the connector, push it in securely until a clicking sound is heard.

Fig 3: Pushing Connector In Securely Until Clicking Sound Is Heard
Courtesy of SUBARU OF AMERICA, INC.