As winter tightens its grip across much of the country, drivers face more than just icy roads and reduced visibility. Freezing temperatures can place serious strain on vehicles of all shapes and sizes, increasing the likelihood of breakdowns precisely when conditions are least forgiving. Proactive and consistent winterization is one of the most effective ways to stay safe, avoid costly repairs and keep vehicles dependable throughout the coldest months.
Here are some key steps you can take to set your vehicles up for success this winter:
Start With the Battery
As temperatures drop, a battery’s ability to deliver power decreases, while the engine requires more energy to start. Batteries that perform adequately in warmer months may struggle, or fail entirely, in winter.
You should have your battery tested before temperatures plunge, especially if it’s more than three years old. Signs of a weakening battery include slow engine cranking, dim headlights or electrical issues. Keeping battery terminals clean and secure also helps ensure consistent performance in cold conditions.
Check Fluids (And Use the Right Ones)
Engine oil thickens in cold weather, making it harder for engines to turn over. Switching to the manufacturer-recommended winter-grade oil can improve cold starts and reduce engine wear. Antifreeze (coolant) is equally critical, preventing the engine from freezing while maintaining proper operating temperature.
Windshield washer fluid should also be rated for freezing temperatures to ensure clear visibility during snow, sleet or road spray.
Inspect Tires and Tire Pressure
Tire pressure drops in cold weather because air molecules contract, losing about 1-2 PSI for every 10°F temperature drop, which can trigger the TPMS light and reduce traction, fuel economy and safety; you should regularly check and inflate tires to the PSI on your driver's door jamb (not sidewall) with a gauge and top them off as needed.
Adequate tread depth is essential for maintaining control on snowy or icy roads. In regions that experience heavy winter weather, switching to winter tires can significantly improve traction and braking performance.
Test the Heating and Defrosting Systems
A properly functioning heater and defroster aren’t just about comfort, but play a significant role in ensuring safety. Defrosting systems ensure clear visibility, while cabin heat helps you stay alert and responsive. Any issues should be addressed early, before extreme cold makes repairs more urgent and less convenient.
Replace Wiper Blades and Check Lights
Wiper blades should be in good condition and capable of clearing snow and ice effectively. Headlights, brake lights and turn signals should all be checked regularly, as shorter days and stormy weather increase reliance on vehicle lighting.
Prepare for the Unexpected
Even well-maintained vehicles can encounter trouble in extreme weather. Carrying a winter emergency kit can make a significant difference if you’re left stranded. Recommended items include portable jump starters and smart battery chargers/maintainers, flashlights, warm clothing or blankets, device chargers or powerbanks and basic necessities like water and snacks.
With the right preparation and by paying attention to warning signs throughout the season, you can ensure your vehicle remains reliable and safe even in the harshest winter conditions. Following this guide can make all the difference in a pinch, whether on-the-go or waiting out a storm.
Battery Tender® offers a range of high-quality products designed to keep vehicles running smoothly and even extend the life of batteries:
Charge N Start 4120: The heavy-duty option in the Charge N Start series, combining smart charging with powerful jump starting for cars, SUVs and larger vehicles up to 6.0L gas and 3.0L diesel engines.
800 AMP Jump Starter and Tire Inflator: Designed to jump start 12 volt batteries up to 4.0L gas and 2.0L diesel engines and inflate tires up to 140psi - ideal for cars, SUVs, trucks, boats and more; able to charge USB powered devices on the go.
2000 AMP Power Station: Small enough to keep in your glove compartment or under the seat, starts any 12-volt battery on gas and diesel engines up to a V8. Perfect for motorcycles, cars, SUVs, trucks and RVs. Also features a 100-watt inverter, for portable AC power.
Learn more about which Battery Tender model is right for you here. Happy charging!
