Is Your Car Ready for Winter? Here’s What to Check Before the Cold Hits

As chilly mornings and early sunsets signal the arrival of winter, it’s more important than ever to make sure your vehicle is ready for the months ahead. Cold weather can take a serious toll on your car, and small problems in the fall can turn into big repairs—or dangerous situations—when snow and ice arrive.

Whether you’re preparing for school drop-offs, holiday road trips, or daily commuting, here’s what experts say you should check to ensure your car stays safe and reliable through the season.

Fluids First

Winter driving often puts more stress on your vehicle’s systems, and that starts with its fluids. Engine oil thickens in cold temperatures, so it’s vital to use the correct type recommended for winter by your car’s manufacturer. Transmission fluid, brake fluid, power steering fluid, and antifreeze should also be checked and topped up if needed.

Don’t overlook windshield washer fluid. Winter roads can splash slush and salt onto your windshield, so you’ll likely use much more fluid than in the warmer months. Make sure the fluid you’re using is rated to withstand freezing temperatures. It’s a smart idea to keep an extra jug in your trunk, just in case.

Test the Heat

It may seem obvious, but your vehicle’s heating system should be checked before the cold sets in for good. Ensure it warms the interior properly and that all vents are blowing air as intended. A working defroster is also critical—not just for comfort, but for safety. Foggy or frosted windows can limit visibility, so check that the defroster clears the glass efficiently.

If the heat isn’t working properly, it may indicate a clogged cabin filter, low coolant levels, or a blower motor issue.

Inspect Critical Components

Modern vehicles are complex, and winter driving demands more from many of their key parts. According to the American Automobile Association (AAA), cold weather can reduce a battery’s strength by up to 50%. If your battery is more than three years old or struggles to start your car on cold mornings, it may be time for a replacement.

Other components to inspect include your brakes, drive belts, and alternator. Worn belts can become brittle and snap in freezing temperatures. Meanwhile, reliable brakes are even more important on icy roads, where stopping distances can increase dramatically.

Winter tires are essential if you live in a region with frequent snow or freezing rain. These tires are made from a rubber compound that remains flexible in cold conditions and provides better grip on snow-covered surfaces. Check the tread depth and look for any cracks or bulges before the first snowfall.

Don’t forget your windshield wipers. If they leave streaks or make noise, it’s time to replace the set. Winter-grade wipers are designed to handle ice buildup and resist cracking in cold conditions.

Lights and Visibility

Clear visibility is essential in winter, when daylight hours are shorter and the weather can change quickly. Check that all exterior lights—headlights, brake lights, turn signals, and hazard lights—are working properly. Clean off any dirt or grime, and replace any dim or burned-out bulbs. Faulty lights aren’t just dangerous—they can also lead to fines in many jurisdictions.

Pack an Emergency Kit

Even a well-maintained car can encounter issues in winter conditions. A sudden snowstorm or icy patch can leave you stuck on the side of the road. That’s why it’s wise to keep a winter emergency kit in your trunk.

The Canadian Automobile Association recommends including a snow shovel, ice scraper, flashlight, jumper cables, traction mats or sand, a warm blanket, gloves, water, and non-perishable snacks. A small first-aid kit and phone charger can also come in handy.

When in Doubt, See a Mechanic

If you’re unsure about the condition of your car—or if it’s been a while since your last checkup—it’s a good idea to visit a licensed mechanic for a winter readiness inspection. Many repair shops offer seasonal tune-ups that include battery tests, fluid checks, and tire inspections. Taking the time now to get your vehicle in shape can help you avoid breakdowns when the weather turns harsh.

With snow and freezing temperatures just around the corner, it pays to be proactive. A few minutes of preparation today can make all the difference between a safe trip and a stressful roadside emergency this winter.