What to Do When the Car Cannot Detect the Key and Fails to Start?
2 Answers
After entering, the car still cannot detect the key, and in the end, you have to directly place the key near the one-button start. The key may have run out of battery, or there could be a battery issue, or leakage causing the battery to drain prematurely. It is often due to the key chip not being readable or possible malfunctions in the transmitter or receiver.
If your car can't detect the key and won't start, it's likely due to a dead key battery. Try using the spare key to start the vehicle. If the spare doesn't work either, all key batteries may be depleted. Replacing them is simple—just buy a new battery, typically CR2032, available at hardware stores. Remember to hold the key close to the steering wheel or start button, as weak signals may require proximity. Signal interference from nearby phones or other electronic devices can block the signal, so try moving them away. If that doesn’t work, check the car manual for an emergency start slot and insert the key into the designated position to activate the system. Occasionally, the issue stems from aging car sensors or antenna problems, requiring a diagnostic check at a repair shop. Avoid forcing the start to prevent damage to other components. Always keep two keys on hand and alternate their use to reduce wear on a single key.
