What to Do When the Car Key Won't Turn the Ignition Switch?

[DeCooper]

If the car key won't start the engine, you can try checking the battery status and other methods. Here are the solutions for when the car key won't start the engine: 1. Check the battery status: In winter, most car starting difficulties are caused by a dead 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 appropriate engine oil: As temperatures drop in winter, engine oil viscosity increases, making it harder to flow and increasing engine resistance. If starting is difficult, check if you're using the wrong oil grade. 3. Replace spark plugs promptly: After several years of use, spark plugs can develop issues like carbon buildup, leakage, excessive gap, or erosion, which can make ignition difficult. Both cold starts and even warm starts may become problematic, often requiring multiple ignition attempts.