Subaru Ascent 2018-2026 Owner's Manual: Operation during cold weather

Maintenance

When operating your Subaru Ascent in winter conditions, proper preparation is essential for safety and reliability. It is highly recommended to carry emergency supplies such as an ice scraper, sand for traction, warning flares, a compact shovel, and jumper cables to handle unexpected situations.

Inspect the battery and its terminals regularly. Low temperatures significantly reduce battery efficiency, so ensuring that the Subaru Ascent battery is in excellent condition is critical for reliable cold starts.

In extremely cold climates, starting the engine may require additional time. Always use engine oil with the correct viscosity rating for winter operation. Heavy or summer-grade oil can make starting your Subaru Ascent more difficult and may increase engine wear.

Prevent door locks from freezing by applying a suitable deicing solution or glycerin. If a door becomes frozen, avoid forcing it open. Instead, gently melt the ice using warm water and dry the area completely afterward to prevent refreezing.

Always use a windshield washer fluid designed for low temperatures that contains antifreeze properties. Avoid using engine coolant or other substitutes, as these can damage the paintwork of your Subaru Ascent.

If switching to a washer fluid with a different concentration, ensure that the previous fluid is flushed from the system by operating the washer for a short period. This helps prevent freezing in the lines and ensures proper operation during cold weather.

CAUTION

• Always adjust the washer fluid concentration according to the ambient temperature. Incorrect concentration may cause the fluid to freeze on the windshield or within the reservoir, obstructing visibility and impairing system function.
• Some regions restrict the use of methanol-based washer fluids due to environmental regulations. Use alternative fluids that provide sufficient freeze protection without damaging the Subaru Ascent paint, wiper blades, or washer system.

Before driving your vehicle

Before entering your Subaru Ascent, remove snow and ice from your footwear to prevent slipping on the pedals, which could lead to unsafe driving conditions.

While warming up the engine, ensure that all controls—including the accelerator and brake pedals—operate smoothly and without obstruction.

Remove accumulated snow and ice from wheel arches and under the fenders. Excess buildup can interfere with steering and suspension movement. During extended winter driving, periodically stop in a safe location to inspect these areas.

Parking in cold weather

WARNING

Accumulated snow around the Subaru Ascent can trap exhaust gases beneath the vehicle. Always keep the exhaust outlet and surrounding area clear when the engine is running to prevent dangerous carbon monoxide buildup.

CAUTION

• Avoid using the parking brake when leaving your Subaru Ascent parked for long periods in freezing conditions, as it may freeze and become difficult to release.
• Lift the windshield wipers away from the glass when parking in snowy conditions to prevent them from freezing to the windshield.
• If the Subaru Ascent has been driven on heavily snow-covered roads or parked during snowfall, inspect the brake system for ice buildup. Snow and ice accumulation around brake components can reduce braking performance. Carefully remove any buildup without damaging hoses or ABS wiring.

When parking your Subaru Ascent for extended periods in winter conditions, follow these steps.

1. Shift the select lever to the "P" position.

2. Place wheel chocks or tire stops to prevent unintended vehicle movement.

Refueling in cold weather

To minimize moisture formation in the fuel system and prevent freezing, it is advisable to use a fuel antifreeze additive during winter operation.

Only use additives specifically designed for automotive fuel systems. For maximum effectiveness, refuel your Subaru Ascent when the tank reaches approximately half capacity.

If the vehicle will not be used for an extended period, keeping the fuel tank full helps reduce condensation and maintain system integrity.

Opening rear gate (models with power rear gate)

CAUTION

Before operating the power rear gate on your Subaru Ascent, ensure that there is no frost, ice, or snow between the tailgate and the body.

If ice is present, remove it carefully before activation. Forcing the rear gate while frozen can result in mechanical damage or system malfunction.

Additional note: Proper winter preparation and регулярний догляд за Subaru Ascent допомагають не лише уникнути технічних проблем, але й значно підвищують рівень безпеки під час руху в складних погодних умовах. Consistent winter maintenance ensures reliable operation and extends the lifespan of critical vehicle systems.