LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Subaru >> 2021 >> Ascent Base >> Repair and Diagnosis >> Electrical >> Gauges >> Instrumentation System & Driver Information Center >> Combination Meter System >> Operation >> Self-Diagnosis Display Mode >> Notes
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Self-Diagnosis Display Mode: Notes

The combination meter self-diagnosis can be performed as a single unit according to the following procedure. When the self-diagnosis display mode operates, it switches in the order of [1. Meter pointer operation check] → [2. Meter pointer indication check] → [3. LCD/TFT display check].

  1. Procedure
    CAUTION:
    • Perform the steps described in (1) through (4) within 10 seconds.
    • There are two methods. Follow either of the methods.
    • Method with lighting switch
      (1) Within 3 seconds after turning the ignition switch to ON, set the parking (tail) light switch or the headlight switch to ON.
      (2) While the switch is in ON, press the trip reset switch three times.
      (3) Turn the parking (tail) light switch or the headlight switch to OFF, and press the trip reset switch three times.
      (4) Turn the parking (tail) light switch or the headlight switch to ON, and press the trip reset switch three times.
    • Method with seat belt
      (1) Unfasten → fasten the driver's seat belt within 3 seconds after the ignition switch is turned to ON.
      (2) With the driver's seat belt fastened, press the trip reset switch three times.
      (3) Unfasten the driver's seat belt, and then press the trip reset switch three times.
      (4) Fasten the driver's seat belt again, and then press the trip reset switch three times.
  2. Go to the self-diagnosis display mode.
    CAUTION: If the procedure is not performed properly, turn the ignition switch from ON to OFF to stop the operation halfway, and then proceed from step (1) to (4).
    NOTE:
    • Turn the ignition switch to OFF (ACC OFF) to cancel the self-diagnosis function.
    • When the engine starts during diagnosis, the self-diagnosis function is not canceled, however, once the vehicle starts driving, the self-diagnosis function is deactivated automatically.
    • If the self-diagnosis function is not deactivated, the check items in operation are displayed. After the check items 1 to 3 are displayed, the check item 1 is displayed repeatedly.
    • The buzzer sounds when the check item is switched, to indicate that the item is switched and make sure that the buzzer sounds.