Procedure To Switch To Service Diagnostics Mode

2016 Subaru Legacy 2.5iSECTION Procedure To Switch To Service Diagnostics Mode
  1. Turn the ignition switch to ACC.
  2. After turning the ignition switch to ACC and wait for 20 seconds or more, press the button (d) five times with the button (a) pressed.
    Fig 1: Identifying Button
    G10272638Courtesy of SUBARU OF AMERICA, INC.
NOTE: Pressing the button (c) for 3 seconds or more, or turning the ignition switch from the OFF to ACC position can exit the diagnostic mode.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

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

Affiliate disclosure: We may earn a commission at no extra 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.