Winterizing Your Vehicle: What Memphis Drivers Should Check Before Cold Weather

Memphis winters have a reputation for being mild, and most of the time that reputation holds. But "mostly mild" is doing a lot of work in that sentence. The Memphis area gets hit by ice storms with enough regularity that the National Weather Service office here runs winter weather preparedness campaigns every season. When those storms arrive — often with less than 24 hours of warning — the drivers who are least prepared are the ones who assumed mild meant exempt.

Cold weather puts specific demands on your vehicle. Not the same demands as a Minneapolis winter, but real ones. Batteries lose cranking power below freezing. Tire pressure drops. Fluids thicken. Rubber seals and hoses contract. The vehicle that handles a Tuesday commute to Germantown without complaint may struggle to start on a Wednesday morning when overnight temperatures dropped to 18 degrees.

The Battery — Always the Battery

Cold weather is a battery's worst adversary. A battery at 32°F has roughly 65% of its room-temperature cranking capacity. At 0°F, that drops to about 40%. Meanwhile, cold oil is thicker and harder to pump, so the engine demands more cranking power to turn over. The battery is being asked to do more at the exact moment it can do less.

Any battery more than three years old should be load-tested before winter sets in — not just voltage-tested, but properly load-tested under simulated cranking conditions. We offer free battery testing at Snell. If yours is marginal, a $100–$150 replacement before the first ice storm is a vastly better outcome than a $65 jump-start call at 7am when you're already late.

"Every ice storm, same thing happens. Temperatures drop overnight, people go out to start their cars the next morning, and the ones who've been getting by on a weak battery — they're calling for jumps. It's always the battery first. Winter just accelerates the failure that was already coming."

Greg Baumgarten, Lead Technician — on the predictable pattern every Memphis winter

Antifreeze: Not Optional, Not Permanent

Coolant does two things: it prevents freezing in cold weather and prevents boiling in summer heat. But it also has a service life. The corrosion inhibitors that protect your engine's aluminum and iron components break down over time, usually after two to five years depending on the formulation. Old coolant can actually accelerate corrosion inside the engine and cooling system — the opposite of what you want.

Before winter, have your coolant's freeze protection checked. A refractometer reading tells you exactly what temperature the coolant will begin to freeze at. For Memphis conditions, protection to at least -20°F is appropriate — cold snaps here can be severe even if brief. If the coolant is due for a change, a flush and refill is part of our winterization service.

Tires in Cold Weather

Tire pressure drops about one PSI for every ten-degree temperature drop. If your tires were properly inflated in October and temperatures fell 30 degrees by December, they may be three pounds low without any leak involved. Underinflated tires handle worse in all conditions — and in the wet, slushy, occasionally icy conditions that Memphis winters deliver, handling is not something to compromise on.

All-season tires marketed as winter-capable are tested to a threshold of 45°F and below. Below that temperature, the rubber compound in standard all-season tires begins to harden, reducing grip. If you live in a part of the metro where roads ice before they're treated — particularly east or north of the city toward Cordova and Bartlett, where the terrain changes — dedicated winter tires are worth considering.

Visibility: Wipers and Defrost

Wiper blades deteriorate through summer UV exposure and heat cycling, and by the time winter arrives they may already be streaking. Ice-rated winter wiper blades have a protective boot that prevents ice from packing into the frame — a worthwhile upgrade for Memphis winters where ice accumulation on blades during a storm is a real problem. Blades run $19.95–$34.95 per pair installed.

Test your rear defroster before temperatures drop. The heating element is a grid of wires embedded in the glass — if sections aren't clearing, the element has a break and needs repair. Front defroster function depends on the HVAC system; make sure it's blowing hot and that the defrost mode is routing air to the windshield correctly.

What the Winterization Package Covers

Our full winterization service runs $89–$149 depending on what the vehicle needs. It typically includes:

Battery load test and terminal inspection
Coolant concentration test and flush/refill if needed
Tire pressure check and inspection
Wiper blade inspection and replacement
Heater and defroster function check
Belt and hose inspection for cold-weather vulnerability
Fluid level check across all systems

The National Weather Service Memphis office typically begins issuing winter weather advisories in December, though severe events have happened as early as November in recent years. Getting ahead of the first cold snap means you're not scrambling when the forecast changes.

Before the Ice Arrives

Sources & Further Reading

NHTSA: Roadside Safety — Federal vehicle safety and road trip preparation
AAA: Road Trip Vehicle Checklist — Pre-trip inspection guide
NWS Memphis — Local weather forecasts and seasonal driving advisories

Schedule your winterization appointment online or call us at (901) 388-7390. We're at 3695 Elvis Presley Blvd in Memphis, and we've been through fifty winters here. We know what the weather does to cars in this city — and what to do about it before it does.

Article by Sherry Snell

Sherry Snell is the owner and office manager of Snell Automotive, a family-owned auto repair shop serving Memphis since 1974. With over 30 years of experience, she oversees daily operations, customer relations, scheduling, and office management — ensuring every customer receives honest, reliable service. Known for her attention to detail and commitment to transparency and quality, Sherry is a trusted and familiar presence who plays a vital role in the continued success of Snell Automotive.