What to Do When the Car Key Fails to Start the Engine?

[DelMason]

If the car key fails to start the engine, you can try checking the battery status and other methods. Here are the solutions for when the car key fails to start the engine: 1. Check the battery status: In winter, difficulty starting the car is mostly due to a depleted battery or an expired battery lifespan. When the battery is low on power, the engine cranks weakly. Avoid continuous ignition attempts to prevent completely draining the battery. 2. Use the appropriate engine oil: As temperatures drop in winter, the viscosity of engine oil increases, making it harder to flow and increasing engine resistance. If starting is difficult, check whether the correct oil grade is being used. 3. Replace spark plugs promptly: After several years of use, spark plugs can develop issues such as carbon buildup, electrical leakage, excessive gap, or erosion, leading to difficulty in ignition, cold starts, or even hot starts, often requiring multiple ignition attempts. Therefore, if you notice difficulty starting the vehicle, weak driving performance, shaking, increased fuel consumption, or unexplained stalling, check the spark plugs and replace them if necessary.