2020 Subaru Ascent BaseFACTORY OEM SERVICE PROCEDURE

Engine Ignition System: General Description: Caution

  • When performing service operation, refer to "Repair Contents" in "General Description". Ref. to REPAIR CONTENTS>REPAIR CONTENTS .
  • Prior to starting work, pay special attention to the following:
    1. Always wear work clothes, a work cap, and protective shoes. Additionally, wear a helmet, protective goggles, etc. if necessary.
    2. Protect the vehicle using a seat cover, fender cover, etc.
    3. Prepare the service tools, clean cloth, containers to catch grease and oil, etc.
  • Prevent scattering of grease and oil. If it scatters, wipe it off immediately to prevent it from penetrating the floor or flowing out, to protect the environmental.
  • If the grease and oil is spilt over the engine, exhaust pipe or the under cover, completely wipe it off to avoid emission of smoke or causing a fire.
  • Vehicle components are extremely hot immediately after driving. Be wary of receiving burns from heated parts.
  • When performing a repair, identify the cause of trouble and avoid unnecessary work.
  • Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery.
  • Always use the jack-up point when the lifting device, shop jacks or rigid racks are used to support the vehicle.
  • Before starting works, remove dirt and corrosion around the target area.
  • Keep the removed parts in order and protect them from dust and dirt.
  • All removed parts, if to be reused, should be reinstalled in the original positions with attention to the correct directions, etc.
  • For the parts except for the non-reusable parts, replace then with new parts if necessary.
  • Be sure to tighten bolts and nuts to the specified torque.
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.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

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 Quote

No obligation. See pricing before you book.