The winter period becomes a real test for a car. Frost, snowdrifts, icy roads and chemicals can provoke malfunctions in the power unit, battery, brake system and even lead to body damage. To prevent the car from letting you down, you need to take care of its preparation for cold weather in advance, carry out certain checks and pay attention to key components.

1. Battery diagnostics

Frost negatively affects battery capacity, which often makes it impossible to start the engine. When preparing your car for winter, it is worth:
  • Measuring the voltage at the terminals with a multimeter. With the engine off, the reading should be at least 12.4 V.
  • Removing dirt and oxide deposits from the terminals for a reliable electrical contact.
  • If the battery has been in use for more than 3-5 years or holds a charge poorly, it should be replaced with a new one.
It is the battery that most often becomes the culprit when a car refuses to start in frost, so checking it is a mandatory item.

2. Updating oil and technical fluids

For proper engine operation in the cold season, high-quality oil and correctly selected antifreeze are extremely important.
  • You should fill in oil designed for winter temperatures with the appropriate viscosity (recommendations are given in the owner's manual).
  • Check the volume and condition of the brake fluid, washer fluid and coolant.
  • Replace the antifreeze if it is outdated or contains foreign impurities — this will protect the cooling system from freezing.
Such measures will prevent the engine from overheating or freezing, and the brakes from losing their effectiveness.

3. Brake system inspection

In winter, the brakes must work flawlessly:
  • Assess the degree of wear of the brake pads and discs.
  • Make sure the brake fluid is of good quality and there is no air in the system.
  • Check the operation of the handbrake — it must hold the car even on an icy surface.
Working brakes are a basic safety condition when driving on slippery surfaces.

4. Tire preparation

The car's handling in winter directly depends on the tires. As part of preparation, you need to:
  • Change summer tires to winter ones, which have a softer compound and a tread designed for snow and ice.
  • Monitor tire pressure: when it gets colder, it drops by about 0.2-0.3 atm.
  • If the tread depth has become less than 4 mm, such tires should be replaced with new ones.
Properly selected tires reduce the likelihood of skidding and improve grip on the road surface.

5. Checking lighting devices and electrical equipment

In winter, daylight hours are short, and visibility often deteriorates due to snowfall or fog. It is worth checking:
  • Headlights and brake lights — they should be clean and emit enough light.
  • The operation of the wipers and washer system — install new blades and fill in winter non-freezing fluid.
  • Turn signals and hazard warning lights.
Such a check guarantees that the car will be clearly visible on the road, and driving it will remain safe.

6. Body and interior care

To reduce the negative impact of winter operation:
  • Apply an anti-corrosion coating to the body, paying special attention to the underbody and wheel arches.
  • Inspect the door seals and treat them with silicone grease so they do not freeze.
  • Replace the cabin filter for more efficient heater operation.
  • Put a winter kit in the trunk: a snow brush, an ice scraper, a warm blanket, a flashlight and a warning triangle.
A prepared interior and protected body will ensure comfort and safety on trips.

7. Heating and cooling operation

The heating and windshield defrosting system must work clearly:
  • Check the operation of the heater and air flows, including the rear window defroster.
  • Make sure the antifreeze circulates correctly and does not freeze.
On an unheated engine in winter, the car works worse, so it is important that warm air enters the cabin quickly.

8. Main conclusions

To successfully pass the winter season, you need to:
  1. Check the condition of the battery and its charge.
  2. Replace the oil and antifreeze.
  3. Pay attention to the brakes and brake fluid.
  4. Install winter tires and adjust the pressure.
  5. Make sure the lights, wipers and electronics are working.
  6. Treat the body and seals, prepare the interior.
  7. Check the heating and cooling system.
By following these recommendations, you can be calm about your car's readiness for winter, and the likelihood of breakdowns and accidents will be minimized.