Cold weather is hard on batteries, tires, and fluids. Spending a little time before winter to check key systems and stock an emergency kit keeps you safer and less likely to get stranded.
~1 psi
pressure drop per 10°F
3+ yr
battery test age
📊 Quick Comparison
Task
When
Note
Battery test
before winter
replace if weak
Winter tires
before first snow
if you get snow/ice
Coolant check
annually
50/50 mix
Winter washer fluid
before freeze
freeze-resistant
Battery and charging
Cold reduces battery capacity and thickens oil, making starts harder. Have the battery tested before winter, especially if it is more than 3 years old, and clean any corrosion off the terminals.
Tires and traction
Check tread depth and consider dedicated winter tires if you drive in snow and ice, since they grip far better than all-season tires in the cold. Tire pressure also drops about 1 psi for every 10-degree Fahrenheit drop, so check and adjust pressures as temperatures fall.
Verify adequate tread for winter traction
Check pressures often as temperatures drop
Consider winter tires for snowy climates
Fluids and coolant
Make sure the coolant is at the correct 50/50 concentration for freeze protection, and use a tester if unsure. Switch to a winter-rated washer fluid that resists freezing, and confirm your oil grade is appropriate for cold starts.
Visibility
Replace worn wiper blades, top off freeze-resistant washer fluid, and make sure the defroster and rear window heater work. Consider winter or beam-style wiper blades for heavy snow.
Emergency kit
Keep a cold-weather kit in the car in case you get stranded.
Blanket, gloves, hat, and warm layers
Ice scraper and snow brush
Jumper cables or a jump pack
Flashlight, first-aid kit, and phone charger
Sand or traction mats, small shovel
Water and non-perishable snacks
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The 50 most common check engine codes with likely cause and DIY fix cost. Sent once.
❓ FAQ
Do I really need winter tires?
If you regularly drive on snow and ice, winter tires grip far better than all-seasons because their rubber stays flexible in the cold. In mild climates, good all-seasons may be enough.
Why does my tire pressure drop in winter?
Air contracts when cold. Pressure falls roughly 1 psi for every 10-degree Fahrenheit drop, so check and top off as temperatures decline.
How do I keep my battery from dying in the cold?
Have it tested before winter, clean the terminals, and replace weak batteries. Cold weather cuts capacity, so an aging battery is much more likely to fail.
What washer fluid should I use in winter?
Use a winter-rated, freeze-resistant washer fluid. Summer fluid or water can freeze in the reservoir and lines and leave you without visibility.
What should be in a winter emergency kit?
Warm layers and a blanket, ice scraper, jumper cables or jump pack, flashlight, first-aid kit, phone charger, traction aids, and some water and snacks.