2020 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Check List for Interview: Check

Check the following items when a problem has occurred.

NOTE: Use copies of this information for interviewing customers.
Customer's name  
Date of purchase  
Date of repair  
Transmission model Transmission Chassis number
Odometer reading km (miles)
Frequency □ Continuous □ Intermittent (times/day)
Weather □ Fine □ Cloudy □ Rainy □ Snowy □ Others
()
Place □ Highland □ Suburbs □ Inner city □ Uphill □ Downhill □ Rough road □ Others
()
Ambient air temperature □ Hot □ Warm □ Cool □ Cold
Vehicle speed km/h (MPH)
AT OIL TEMP light □ Blinks continuously □ Does not blink
Select lever position □ p □ R □ N □ D □ Manual mode
Driving condition □ Not affected
□ At racing
□ While decelerating
□ At starting
While accelerating
□ While turning (□ RH/□ LH)
□ While idling
□ When cruising (Vehicle speed km/h)
□ Immediately after starting the engine
Manual mode □ ON □ OFF
Symptoms □ Vehicle does not move (□ Any position □ Particular position)
□ Vehicle does not move (no load racing condition as in N range)
□ Vehicle does not move (engine speed does not increase, felt as stall condition)
□ Noise or vibration (Specifically:)
□ Shock felt at N D selection (seconds after shifting, when engine cold or after warm-up)
□ Shock felt at N R selection (seconds after shifting, when engine cold or after warm-up)
□ Shifting is wrong
(Specifically:)
□ Shock or judder during driving
□ Fails to accelerate
□ Engine speed increases abruptly during driving
□ Shock or judder during standing start
□ Select lever does not move
□ Others
()
Factory Service Tools

Use the Manual With the Right Hardware

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

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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.

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