Winter Emergency Kit for Your Car: What Every Ontario Driver Needs

Nobody plans on getting stranded in their car during an Ontario winter. But every year, thousands of drivers end up sitting on the side of a highway or stuck on an unplowed back road, waiting for help that might be hours away. I learned this lesson personally about eight years ago on Highway 28 north of Peterborough. An ice storm took down trees and power lines, the road was closed in both directions, and I sat in my car for nearly four hours before traffic started moving again. The temperature was -12°C and dropping. That was the winter I got serious about keeping a proper emergency kit in my trunk.

The CAA recommends that every driver carry a winter emergency kit from November through April, and having gone through that experience, I couldn't agree more. Here's what should be in yours.

Warmth and Survival Essentials

A warm blanket or sleeping bag. This is the most important item in the kit. If your car breaks down or you're stuck in a road closure and your engine dies, the interior of your car will reach outside temperature within about 30 minutes. A good wool blanket or a compact sleeping bag rated for cold weather can keep you alive in that situation. I keep a fleece blanket and a compact emergency Mylar blanket. The Mylar one is tiny, weighs nothing, and reflects your body heat surprisingly well.

Extra winter clothing. A spare toque, insulated gloves, and a warm scarf or neck gaiter. If you commute in office clothes, having actual winter gear in the trunk means you can step outside to deal with a flat tire or push your car without freezing. I also keep an old pair of winter boots in the trunk because changing a tire in dress shoes on an icy highway shoulder is an experience I only needed once.

Hand and toe warmers. Those little single-use warmers you can buy in multi-packs at Canadian Tire. They last about six hours, weigh nothing, and can make a miserable wait significantly more bearable. I throw a handful in the kit every October.

Getting Unstuck

A small folding shovel. You don't need a full-size snow shovel. A compact folding shovel or even a sturdy garden trowel will do. It's for digging out your tires when you're stuck, not clearing a driveway. I've used mine more times than I can count, usually in parking lots where the plow pushed a wall of snow behind my car.

Traction aids: sand, cat litter, or traction mats. A bag of coarse sand or non-clumping cat litter provides traction under spinning wheels on ice. Sprinkle it in front of and behind the drive wheels. Some people carry dedicated traction mats or even old floor mats. Whatever you use, having something to put under your tires when they're spinning on ice is invaluable.

A tow strap. A proper tow strap rated for your vehicle's weight. If a Good Samaritan stops and offers to pull you out, having your own strap means they don't have to risk their equipment. Make sure it's a strap, not a chain. Chains can snap and become projectiles. Straps stretch slightly and are much safer.

Power and Visibility

Jumper cables or a portable jump starter. Dead batteries are the most common winter car problem. Good quality jumper cables should be at least 12 feet long and 6 gauge. Personally, I switched to a lithium portable jump pack a few years ago. It's about the size of a paperback book, holds a charge for months, and can start a dead battery without needing another vehicle. It also has USB ports for charging phones. Best $80 I've ever spent on car gear.

Flashlight with extra batteries. Winter breakdowns often happen in the dark, because winter is mostly dark. A good LED flashlight is essential. Keep the batteries separate from the flashlight to prevent drain. I also keep a headlamp in the kit because having both hands free when you're digging out or looking under the hood is extremely helpful.

Reflective triangles or flares. If you're stopped on the shoulder of a highway, you need to be visible. Reflective triangles are reusable and don't expire. Road flares work in blizzard conditions when triangles might not be visible. Having both is ideal.

Phone charger. A car charger and a portable battery bank. Your phone is your lifeline for calling for help and your GPS for knowing exactly where you are when you call a tow truck. A dead phone during a roadside emergency is a serious problem. Keep the battery bank charged. I plug mine in once a month during winter to top it off.

Food and Water

Water. At least one litre, preferably two. In winter, keep it in the cabin rather than the trunk so it doesn't freeze solid. Some people carry water bottles inside insulated sleeves. Dehydration is a real concern during extended waits, especially if you've been exerting yourself digging out or changing a tire.

Non-perishable snacks. Granola bars, nuts, dried fruit, or chocolate. High-calorie, compact, and they don't go bad sitting in your trunk for months. Replace them every spring so they're fresh each winter season. Energy bars are my go-to because they pack a lot of calories in a small package.

Tools and Supplies

Ice scraper and snow brush. Keep a compact one inside the cabin, not just in the trunk. If your doors freeze or the trunk is iced shut, the one in the trunk isn't helping you.

Basic tool kit. Pliers, a multi-tip screwdriver, adjustable wrench, duct tape, and zip ties. This won't fix major mechanical problems, but it handles an embarrassing number of roadside issues. Duct tape has temporarily fixed more things on my vehicles than I'm proud to admit.

First aid kit. A basic kit with bandages, antiseptic, pain relievers, and any personal medications you take regularly. If you're on prescription medication, keep a small backup supply in the car during winter months.

Windshield washer fluid. An extra jug in the trunk. You go through it fast in winter, and running out on the highway when trucks are throwing salt spray at your windshield is dangerous. A jug of -40°C rated fluid weighs almost nothing and can save you from a hazardous situation.

Packing and Maintaining Your Kit

I keep everything in a sturdy duffel bag in the trunk. It's organized so I can find what I need in the dark, which is when you'll probably need it. Some people use a plastic bin, which also works well and keeps things dry.

At the beginning of every winter, I go through the kit and verify everything. Replace snacks, check battery levels on the flashlight and jump pack, make sure the hand warmers haven't expired, and confirm everything is accounted for. This takes ten minutes and is part of my fall car maintenance routine.

In the spring, I pull the kit out and swap it for a lighter summer version. The winter gear goes in the garage until October.

What to Do When You're Stranded

Having the kit is step one. Knowing what to do with it matters too. If you're stranded in winter:

Stay with your vehicle unless you can see a building within easy walking distance. Your car is shelter, and it's much easier for rescuers to find a car than a person walking in a storm. Run the engine for 10-15 minutes each hour to stay warm, but crack a window slightly and make sure the tailpipe isn't blocked by snow, to prevent carbon monoxide buildup. Turn on your hazard lights. Conserve phone battery for emergency calls. Eat and drink to maintain energy and body heat.

Avoiding these situations in the first place is ideal. Stay on top of the common winter driving mistakes that get people into trouble, and know when to stay off the roads during heavy snow events.

The Kit You'll Hopefully Never Use

The best emergency kit is one you never need. But Ontario winters are unpredictable, and even careful drivers can end up in situations where help is far away and conditions are deteriorating. For the cost of a dinner out, you can assemble a kit that covers you for virtually any winter roadside scenario. The peace of mind alone is worth it, and on the day you actually need it, it's priceless.