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.
2016 Subaru Legacy 2.5iFACTORY OEM SERVICE PROCEDURE
Main Relay: Inspection
- Check that the main relay has no deformation, cracks or other damages.
- Measure the resistance between main relay terminals.
Terminal No. Standard 1 and 3 1 MΞ© or more 2 and 4 80.55 - 98.45 Ξ© (when 20Β°C (68Β°F)) - Connect battery positive terminal to terminal No. 2 and battery ground terminal to terminal No. 4, and measure the resistance between the main relay terminals.
Terminal No. Standard 1 and 3 Less than 1 Ξ©
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.