Preparation For The Inspection Mode

Check that the battery voltage is 12 V or more and fuel remains approx. half [20 - 40 L (5.3 - 10.6 US gal, 4.4 - 8.8 Imp gal)].
Check that the front hood is closed.
Start and warm up the engine.
Using the Subaru Select Monitor, read the data of Auto Start Stop and check that [ECM Idle Stop Prohibition] and [CVT idle stop prohibition] indicate "Permit". Ref. to AUTO START STOP (DIAGNOSTICS)>DATA MONITOR .
Using the Subaru Select Monitor, perform the clear memory. Ref. to COMMON (DIAGNOSTICS)>CLEAR MEMORY .
Read the diagnostic trouble code (DTC) and check that no DTC is displayed. Ref. to AUTO START STOP (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
NOTE: If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis using "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Ref. to AUTO START STOP (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . After solving the DTC, repeat from step 2.
Turn the ignition switch to OFF.
DIAGNOSTIC PROCEDURE:

WARNING: When performing inspection mode on a public road, pay sufficient attention to the traffic condition and give the highest priority to safe driving.
1. Turn the ignition switch to ON and wait for at least 10 seconds without starting the engine.
2. Start the engine, and run the engine at idle for 60 seconds or more while the vehicle is at a standstill.
3. Accelerate to 40 km/h (24.9 MPH) or more, and depress the brake pedal to stop the vehicle with the gear kept in D range.
4. Check that the Auto Start Stop functions for at least 10 seconds.
5. Release the brake pedal to restart.
6. Turn the ignition switch to OFF, and wait for 10 seconds or more.
7. If the Auto Start Stop does not function for 10 seconds or more in step 4), repeat steps 1 to 5 with the number of driving cycles described in the detection condition for each DTC. Ref. to AUTO START STOP (DIAGNOSTICS)>INSPECTION MODE .
8. Read the diagnostic trouble code (DTC) and check the DTC. Ref. to AUTO START STOP (DIAGNOSTICS)>DIAGNOSTIC TROUBLE CODE (DTC) .
  NOTE:
  - If the DTC is displayed on the screen, the trouble is still present. Perform the diagnosis using "Diagnostic Procedure with Diagnostic Trouble Code (DTC)". Ref. to AUTO START STOP (DIAGNOSTICS)>DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC) . After solving the DTC, repeat from step 1.
  - When the Auto Start Stop functions for at least 10 seconds, the function recovers properly.