WARNING
Never attempt to remove the radiator cap until the engine has been shut off and has cooled down completely. Since the coolant is under pressure, you may suffer serious burns from a spray of boiling hot coolant when the cap is removed.

Check the coolant level at each fuel stop.
1. Check the coolant level on the outside of the reservoir while the engine is cool.
2. If the level is close to or lower than the "LOW" level mark, add coolant up to the "FULL" level mark. If the reserve tank is empty, remove the radiator cap and refill coolant up to just below the filler neck as shown in the following illustration.


3. After refilling the reserve tank and the radiator, reinstall the cap and check that the rubber gaskets inside the radiator cap are in the proper position.
CAUTION
Engine coolant
Changing the coolantTire pressure monitoring system (TPMS) (U.S.-spec. models)
The tire pressure monitoring system (TPMS) in the Subaru Ascent is designed to
continuously monitor tire pressure and alert the driver when one or more tires are
significantly underinflated. This system enhances safety by helping to reduce the
risk of tire-related incidents and ensuring op ...
Note
INSTRUMENTATION/DRIVER INFO > Multi-function Display (MFD) SystemNOTEFor procedure of each component in the Multi-Function Display (MFD) system, refer to the respective section.• Multi-function display: Multi-function Display (MFD) > REMOVAL">• Multi-function display switc ...
System maintenance
NOTE
For the Subaru Ascent remote engine starter transceiver: if the vehicle battery
has been replaced, discharged, or disconnected, it is necessary to start the vehicle
manually at least once using the key or ignition system before the remote engine
start function can be used again. This ste ...