Winter Car Care in Canada: A Practical Checklist

A car that starts and runs fine in October can struggle in a January cold snap. Cold weather stresses batteries, fluids, rubber, brakes and visibility. A short list of checks in the fall prevents most winter breakdowns.

This is general guidance. Always follow your owner’s manual for fluid types, pressures and service intervals.

The winter prep checklist

Tires first

Tires matter more than any other winter preparation. Install four matching winter tires when temperatures are consistently near or below about 7 degrees Celsius, and check pressure regularly since cold air lowers it. Quebec requires winter tires in winter, and British Columbia requires them or chains on designated highways. The full details are in the guide to winter tires in Canada.

If your tires are worn or aged, replace them before relying on them for a season.

Battery and charging system

Cold thickens engine oil and slows chemical reactions in the battery, so starting requires more power while the battery delivers less.

• Ask a shop or parts store to load-test the battery. Many do it quickly.
• Clean corrosion from the terminals and make sure connections are tight.
• Replace batteries that are old, slow to crank or failing tests. Battery life varies by type and conditions.
• Check the alternator output if the battery repeatedly runs down.
• Keep a set of jumper cables or a portable jump starter in the car.

Electric and hybrid vehicles have their own cold-weather considerations, such as reduced range. Check the manufacturer’s guidance if you drive one.

Fluids

Windshield washer fluid

Use fluid rated for winter temperatures, since summer fluid can freeze. Keep the reservoir topped up, because slush and salt spray use a lot.

Coolant (antifreeze)

Coolant protects the engine from freezing and corrosion. Have the mix tested and replaced according to your service schedule, and use the type your manufacturer specifies.

Engine oil

Oil that flows well when cold protects the engine at startup. Use the viscosity grade in your owner’s manual, and keep up with oil changes. See the car maintenance schedule for typical intervals.

Fuel

Keep the tank at least a quarter to half full. This reduces the risk of fuel line moisture freezing and gives you a buffer if you are stuck in traffic or delayed.

Wipers, glass and lights

• Replace worn wipers. Winter blades have a rubber boot that resists ice buildup.
• Keep the windshield clean inside and out. Dirty glass scatters low winter sun and headlights.
• Check all lights, including fog lights, brake lights and turn signals.
• Clear snow and ice from all windows, mirrors, lights and the roof before driving. Snow sliding off a roof can blind a driver behind you.

Brakes and suspension

Winter roads are hard on brakes and suspension. Salt accelerates corrosion on brake lines and components. Ask a mechanic to inspect:

• Brake pad thickness and rotor condition
• Brake fluid condition
• Brake lines for rust
• Suspension and steering parts, since potholes appear when frost thaws

Rust protection and washing

Road salt and brine speed corrosion. Helpful habits:

• Wash the car regularly in winter, including the undercarriage, when temperatures allow.
• Ask about rust-proofing at purchase or later, and compare what is offered and what is actually applied. Claims about rust protection vary, so read warranties carefully.
• Fix paint chips before rust spreads.
• Use rubber floor mats to protect carpet from salt and slush.

Doors, locks and seals

• Treat door seals with a rubber protectant so doors do not freeze shut.
• Use a lock de-icer or lubricant rather than hot water, which can refreeze or damage paint and glass.
• Check that the rear defroster and heated mirrors work.

Build an emergency kit

Store these items in the car, not in the garage:

• Warm blanket, gloves, hat and boots
• Flashlight with spare batteries
• Ice scraper, snow brush and small shovel
• Jumper cables or a jump starter
• Traction aid such as sand, salt or kitty litter
• Phone charger or power bank
• First-aid kit, water and non-perishable snacks
• Reflective triangles or flares

If you drive in remote regions, add extra warm clothing, food and a plan to tell someone your route and expected arrival time.

Winter driving habits

• Slow down and increase following distance. Stopping distance can be several times longer on ice.
• Brake, steer and accelerate gently.
• Learn how your anti-lock braking system (ABS) feels, and press the brake firmly instead of pumping it.
• Do not use cruise control on slippery roads.
• Check road conditions and forecasts before long trips, and delay travel in severe weather.
• If stuck, stay with the vehicle, clear the exhaust pipe of snow, and run the engine only briefly in ventilated conditions. Carbon monoxide is dangerous.

Choosing a car for winter

If you are buying, consider features that help in snow, such as good ground clearance, heated seats and quality tires. What to look for in a car for Canadian winters goes through the choices, and the cost of seasonal care belongs in your budget; see the true cost of owning a car.

Key takeaways

• Do winter prep in the fall: tires, battery, fluids, wipers, lights and brakes.
• Have the battery load-tested, since cold exposes weak batteries first.
• Use winter-rated washer fluid, correct coolant and keep the fuel tank at least partly full.
• Pack an emergency kit and clear all snow and ice before driving.
• Wash off road salt regularly and drive gently to match conditions.

Informational only. AutoChoice.ca does not sell vehicles or provide financing, insurance, legal or tax advice. Rates, fees and rules change and vary by province; confirm with the dealer, lender, insurer or government agency before you act. See the disclaimer.