Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2020 Subaru Ascent TouringFACTORY OEM SERVICE PROCEDURE
Engine Coolant Temperature Sensor: Removal
- Disconnect the ground cable from battery. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
- Drain engine coolant. Ref. to COOLING (H4DOTC)>ENGINE COOLANT>REPLACEMENT>DRAINING OF ENGINE COOLANT .
- Remove the intercooler. Ref. to INTAKE (INDUCTION) (H4DOTC)>INTERCOOLER>REMOVAL .
- Disconnect the connector (A) and connector (B), and remove the clip (C), clip (D) and clip (E).
- Remove the connector (A) and the clip (B).
- Disconnect the connector (A) from the knock sensor, and disconnect the connector (B) from the engine coolant temperature sensor.
- Remove the engine coolant temperature sensor using the ST.NOTE: STRUT MOUNT SOCKET (20099PA000) can also be used.
Preparation tool:
ST: STRUT MOUNT SOCKET (20399AG000)
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.
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.