What to Do When the Car Key is Broken and Won't Start the Engine?
3 Answers
Simply flip the safety switch to pull out the spare key and insert it into the keyhole to open the door. Upon closer inspection, you'll notice a small notch; insert the key there and pry open the decorative cover. If you find that the remote key is out of battery, just purchase a button battery from a nearby convenience store and replace it. After shifting into first gear, slowly release the clutch to use the turning force of the wheels to drive the engine flywheel. Avoid using this method to start automatic transmission vehicles.
I've seen this issue of car keys failing to start the engine quite often. Don't panic, first check if the key battery is dead. Many modern car keys use CR2032 batteries, and simply replacing this small battery at home usually solves the problem. If the battery is fine but it still doesn't work, immediately try your spare key - I always recommend keeping a spare key hidden at home or with someone you trust. Without a spare, the internal chip or circuit board might be damaged; don't attempt DIY repairs, just call a tow truck to take it to a repair shop for safer handling. Some older cars have manual starting tricks like connecting battery terminals, but this isn't recommended for newer models to avoid damage. To prevent future issues, develop habits of regularly checking key batteries and testing spare keys - taking two minutes for a pre-drive check can save major headaches.
The key won't start the car, and there are several common reasons. Low battery power causes signal transmission failure, and replacing it with a new battery, such as a CR2025 type, can fix most cases. If the key chip is damaged or internally broken, professional repair is needed; use a spare key to start the vehicle if available. When the keyless entry system fails, trying again close to the start button sometimes works. Preventive measures include avoiding dropping the key or exposure to strong magnetic interference. If the issue persists, call roadside assistance or visit a 4S store for diagnosis and a new key with professional equipment. The key replacement process usually includes reprogramming, which is not costly but takes time.
