What Are the Reasons for a Car Not Starting in Cold Weather?
2 Answers
The reasons for a car not starting in cold weather are: 1. Battery issues: In winter, the starting power of the battery decreases due to temperature, which can easily lead to difficulty in starting the car; 2. Carbon buildup: A large amount of carbon buildup is a major cause of difficulty in starting, as it affects the spark plugs' ability to ignite; 3. Starter issues: An aging starter or poor contact can also cause the car not to start. The correct method to start a car: Insert the key and turn it to ACC, then wait for 2 to 3 seconds to allow the main power relay contacts to stabilize and power the components that need electricity first; then continue turning the key to ON, wait for 6 to 10 seconds to allow the fuel pump relay to engage.
When the weather gets cold, the car won't start, and the most common reason is a weak battery. Cold weather makes the electrolyte in the battery thicker, reducing the starting current, especially noticeable in older batteries. I once experienced this in winter—the car just wouldn't start no matter how much I tried, and later found out the battery voltage was too low and needed replacement. Engine oil is also crucial; at low temperatures, oil viscosity increases, causing more internal friction in the engine and greater starting resistance. Preventive measures include parking in a warm garage or using a battery charger to maintain sufficient charge, as well as regularly checking the battery's lifespan and replacing it in time. During cold seasons, it's recommended to switch to winter-grade engine oil, which maintains better fluidity. Remember, avoid prolonged starting attempts in low temperatures to prevent completely draining the battery—this can save a lot of trouble.
