What to Do When Keyless Entry Fails?
1 Answers
When the keyless entry fails to unlock the car doors, there are typically two possibilities: either the car battery is dead, or the key fob battery is depleted. Regardless of the subsequent troubleshooting or repairs needed, the first step is to use the spare mechanical key to unlock the door. Daily precautions for key fob usage: 1. Avoid proximity to electronic devices: Experts explain that under normal circumstances, the original battery of a smart key can last about two years. However, severe electromagnetic interference can also cause the key fob to malfunction. "In certain environments with strong electromagnetic interference, the wireless communication between the smart key and the vehicle may be temporarily disrupted," says an expert. "If the smart key is stored near a mobile phone for extended periods, its chip can be affected by the phone's frequency, leading to temporary failure." Experts warn that since smart keys use low-intensity radio waves, they should not be placed near electronic products or devices such as radios, TVs, computers, or microwaves, which can act as 'nemeses' to the key fob. Electromagnetic waves not only drain the battery but also damage the chip, eventually causing the smart key to malfunction. 2. Avoid rough handling: Experts emphasize that most smart keys have fragile internal circuitry and are prone to damage from strong impacts. Additionally, water exposure can fry the internal wiring, resulting in remote failure. It's also important to avoid leaving the smart key in high-temperature environments like under the windshield or in direct sunlight. 3. Do not store the spare key inside the car: Losing a smart key due to improper storage can lead to significant inconvenience and high replacement costs. Experts advise against keeping the spare key inside the vehicle or together with the smart key. For smart proximity keys, replacing them requires modifying the car's computer parameters and reprogramming a new set of keys. Owners must provide vehicle and identification documents, and manufacturers must supply the corresponding model parameters or codes. Once replaced, the lost key can no longer start the engine. Another solution is to replace all the car locks, which is more secure but involves higher costs and longer repair times.
