SEASONAL VEHICLE PREP — BEFORE THE WEATHER TURNS

Seasonal Vehicle Prep Checklist — Get Your Car Ready Before the Season Hits

Winter tyres in November, AC check in April. The items that save you are the ones you check before you need them.

Select your season and climate. The checklist covers tyres, battery, fluids, wipers, and safety gear — with specific intervals for each seasonal transition.

Vehicle-related breakdowns spike at seasonal transitions because drivers skip the prep. The most common failures — batteries, tyres, fluids — are all preventable with advance checks.

All drivers, particularly in seasonal climates and anyone running year-round on a single tyre set.

  • NHTSA seasonal vehicle safety recommendations
  • State winter driving requirements
  • Manufacturer seasonal maintenance schedules
CHECKLIST
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Tire swap: winter tires for below 40°F / summer tires for above 50°F
All-season tires lose grip below 40°F; dedicated winter tires are significantly safer
Some Canadian provinces legally require winter tires (BC, QC)
Tire pressure adjusted for temperature change
Pressure drops 1 PSI per 10°F temperature decrease — check cold inflation
Battery load-tested (should be 12.6V+ at rest)
Cold cranking amps drop 35% at 32°F and 60% at 0°F
Engine coolant concentration checked (-34°F minimum for most climates)
Use refractometer — 50/50 water/antifreeze good to -34°F
Windshield washer fluid changed to winter formula (-20°F rated)
Summer fluid freezes on windshield at temperatures below 32°F
Wiper blades inspected or replaced with winter blades
Winter blades prevent ice buildup; replace summer blades in November
4WD / AWD system tested in safe area before winter
Engage 4WD before you need it — not when already stuck
Emergency winter kit added: blanket, ice scraper, sand/cat litter, shovel
One ice storm can strand you for hours — be prepared
Brake inspection (pads and rotors) before winter season
Cold weather amplifies brake fade and increases stopping distance
Air conditioning serviced before summer (refrigerant level checked)
Low refrigerant forces the system to work harder; may fail in peak heat
Cabin air filter replaced (every 12–15K miles or annually)
Summer pollen season clogs cabin filters faster
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⚖ LAW REFERENCE
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Disclaimer: This tool is provided for educational and informational purposes only and does not constitute legal, safety, or professional advice. Sunferno Automotive Accessories cannot verify how products are installed, used, or attached in your specific vehicle or situation — proper installation, use, and securement are solely the responsibility of the user. Laws and regulations vary by jurisdiction and change over time; always confirm current requirements with your local authorities or a qualified professional. Sunferno products must be used strictly in accordance with manufacturer instructions and applicable regulations.

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