Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2021 Subaru Outback BaseFACTORY OEM SERVICE PROCEDURE
Horn System: General Description: Caution
- When performing service operation, refer to "Repair Contents" in "General Description". Ref. to REPAIR CONTENTS>REPAIR CONTENTS .
- Before performing vehicle maintenance, turn the ignition switch to OFF and disconnect the ground terminal from the battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
- When replacing the parts provided with memory functions, record the memory contents before disconnecting the ground terminal from the battery sensor.
- Be careful of the following items. Failing to do so may cause the airbag system malfunction.
- Yellow connectors and harnesses with yellow tapes around them are the connectors and harnesses for the airbag system. When using a tester on these circuits, follow the cautions of "AIRBAG SYSTEM".
- Be careful not to damage the airbag system wiring harness when servicing the electrical parts around the steering column. Ref. to AIRBAG SYSTEM>GENERAL DESCRIPTION>CAUTION .
- When removing, installing or replacing the VDC control module and H/U, VDC control module and H/U bracket, steering wheel or steering angle sensor (steering roll connector), perform "VSC(VDC) Centering Mode" of the VDC. Ref. to VEHICLE DYNAMICS CONTROL (VDC)>VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDC Control Module and H/U)>ADJUSTMENT>VDC SENSOR MIDPOINT SETTING MODE .
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.
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.