2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Driver's Airbag Module: Installation

WARNING: This page is about a different car, the 2022 Subaru WRX. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Refer to "CAUTION" of "General Description" before handling the airbag system components. Ref. to  AIRBAG SYSTEM>GENERAL DESCRIPTION>CAUTION  
  • Do not allow harness and connectors to interfere or get tangled up with other parts. 
  1. Before installation, inspect the following items and replace any faulty part with a new one.
    • Airbag module is cracked or deformed.
    • Harness and/or connector is cracked, deformed or open.
    • Harness wire is exposed.
    • The steering wheel assembly is in the way, making it difficult to install the airbag module.
    • The clearance between the driver's airbag module and steering wheel assembly is not constant.
  2. Install the driver's airbag module.
    NOTE:
    • Make sure that the snap pin is securely placed inside the guide before installing the airbag module. 
    • After the airbag module is installed, make sure that the airbag module locks (three positions) are securely locked. 
    1. Connect the airbag connector. Ref. to AIRBAG SYSTEM>AIRBAG CONNECTOR>PROCEDURE>KNEE AIRBAG MODULE, DRIVER'S AIRBAG MODULE & LAP SEAT BELT PRETENSIONER 
    2. Connect the horn harness.
    3. Press in the locks (three positions) to install the airbag module.
  3. Connect the ground terminal to battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY
  4. Check that the horn sounds.
Chapter Navigation
Return to Chapter: Driver's Airbag Module
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.