Subaru Forester: Operation during cold weather / Maintenance

Carry some emergency equipment, such as a window scraper, a bag of sand, flares, a small shovel and jumper cables.

Check the battery and cables. Cold temperatures reduce battery capacity. The battery must be in good condition to provide enough power for cold winter starts.

It normally takes longer to start the engine in very cold weather conditions. Use an engine oil of a proper grade and viscosity for cold weather. Using heavy summer oil will make it harder to start the engine. Keep the door locks from freezing by squirting them with deicer or glycerin.

Forcing a frozen door open may damage or separate the rubber weather strips around the door. If the door is frozen, use hot water to melt the ice, and afterwards thoroughly wipe the water away.

Use a windshield washer fluid that contains an antifreeze solution. Do not use engine antifreeze or other substitutes because they may damage the paint of the vehicle.

If you fill the reservoir tank with a fluid with a different concentration from the one used previously, purge the old fluid from the piping between the reservoir tank and washer nozzles by operating the washer for a certain period of time. Otherwise, if the concentration of the fluid remaining in the piping is too low for the outside temperature, it may freeze and block the nozzles.

CAUTION

  • Adjust the washer fluid concentration appropriately for the outside temperature. If the concentration is inappropriate, sprayed washer fluid may freeze on the windshield and obstruct your view, and the fluid may freeze in the reservoir tank.
  • State or local regulations on volatile organic compounds may restrict the use of methanol, a common windshield washer antifreeze additive. Washer fluids containing non-methanol antifreeze agents should be used only if they provide cold weather protection without damaging your vehicle’s paint, wiper blades or washer system.

    Operation during cold weather

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    Before driving your vehicle

    Before entering the vehicle, remove any snow or ice from your shoes because that could make the pedals slippery and driving dangerous. While warming up the vehicle before driving, check that the accelerator pedal, brake pedal, and all other controls operate smoothly...

    Other information:

    Subaru Forester 2019-2024 Owners Manual: Fuse panel located in the engine compartment


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    Subaru Forester 2019-2024 Owners Manual: Wiper and washer


    WARNING In freezing weather, do not use the windshield washer until the windshield is sufficiently warmed by the defroster. Otherwise the washer fluid can freeze on the windshield, blocking your view. CAUTION Do not operate the washer continuously for more than 10 seconds, or when the washer fluid tank is empty...

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