Clear Snow Off the Whole Vehicle: A Before-Driving Walkaround

A clear patch in front of the steering wheel is not enough. Snow left on the roof can slide over the windshield when you brake or blow into another driver’s view. Clear the whole vehicle before driving, then check it from the driver’s seat.

Transport Canada specifically includes the hood, roof, windows and lights in its snow-removal guidance. It also says to clear frost and fog from all windows. The aim is to see properly and avoid shedding snow onto other road users—not simply to make the vehicle look tidy.

1. Check around the vehicle before starting

After heavy snowfall, look for packed snow around the exhaust and the vehicle. SAAQ warns that snow must be cleared before starting, including the exhaust area, because blocked exhaust can create a carbon-monoxide hazard. Never leave a child in a running vehicle while you clear it.

Do not idle a gasoline, diesel or hybrid vehicle in a garage—even with the door open. Make the clearing plan before using remote start. If you cannot reach a buried exhaust or clear the vehicle safely, get appropriate assistance rather than letting it run while you work around the problem.

2. Work from the upper surfaces down

For an ordinary parked car or SUV, a practical sequence is roof first, then the hood and rear deck or hatch, followed by the glass. That way, snow brushed from a higher surface is less likely to cover a window you have just finished.

Use a vehicle-appropriate snow brush and the manufacturer’s care instructions. Plan how to reach a tall roof from stable ground; do not climb onto an icy tire, bumper or roof. If the vehicle is too tall to clear safely with your equipment, arrange help before setting off.

Do not assume a solid sheet of roof ice will become harmless once you reach the highway. If frozen material will not release safely using the approved method, allow time to deal with it properly rather than driving to shake it loose.

3. Check every surface you need to see through—or be seen by

SAAQ’s visibility guidance includes the windshield, side and rear windows, front and rear lights and mirrors. Walk around both sides; it is easy to miss the passenger-side window or rear lamp when you are standing near the driver’s door.

• Clear the full glass area, not just a narrow viewing slot.
• Check front lights, rear lights and indicators after brushing the surrounding panels.
• Make sure both outside mirrors are usable.
• Check the rear hatch or trunk area and licence plate for accumulated snow.
• Inspect camera and sensor areas using the vehicle manual’s cleaning instructions; do not scrape delicate components with the glass scraper.

4. Free the wipers before asking them to work

Do not use the wiper motor to force frozen blades across the windshield. Follow your vehicle’s defrost and wiper-care instructions, including any service-position requirement, and make sure the blades can move before switching them on. Never force a wiper arm upward if its normal parked position is obstructed by the hood.

SAAQ’s passenger-vehicle guide also calls attention to the space at the base of the windshield, where hardened snow can obstruct wiper movement. The same guide includes the rear hatch, trunk and licence plate in the clearing check.

5. Sit down and check the actual view

From your normal driving position, check forward, to both sides and through the mirrors. Clear remaining interior fog before leaving. If you cannot see enough to reverse or pull out safely, the job is not finished—even if the windshield looks clear from outside.

Transport Canada cautions that driver-assistance features may not work in bad weather. A clean camera image or cleared warning does not replace direct visibility, and it does not make poor road conditions safe.

Recheck when conditions change

Snow and road spray can build up during a trip. If visibility deteriorates, find a safe stopping location and restore it rather than reaching outside or trying to clean equipment while driving. Give yourself enough departure time for clearing; if that time is unavailable, change the trip rather than reducing the view.

Canadian government sources checked November 1, 2026. Cleaning and wiper mechanisms vary by vehicle; follow its manual and avoid improvised methods that could damage glass, paint or sensors.