4. Security risks and countermeasures
Despite the sophisticated encryption, keyless entry systems remain vulnerable to certain types of attacks, notably relay attacks. In a relay attack, thieves use devices to capture and amplify the fob’s signal from inside a house, tricking the car into unlocking and starting remotely. This method bypasses physical security barriers and can lead to vehicle theft without forced entry.
Manufacturers and owners can mitigate these risks through multiple strategies. Many key fobs now include motion sensors that disable their signal when stationary. Additionally, using signal-blocking pouches or Faraday bags can prevent unauthorized signal capture. Parking in secure, well-lit areas and employing supplementary security devices like steering wheel locks further reduce the likelihood of theft.
5. Impact on insurance and theft rates
Keyless entry systems influence car insurance premiums due to their mixed impact on theft risk. Insurance companies often offer discounts for vehicles equipped with advanced security features, including keyless systems, recognizing that encryption and immobilizers enhance protection.
However, the rise of relay attacks has correlated with an increase in certain types of vehicle theft, prompting insurers to reassess risk models and sometimes increase premiums for targeted models or areas. Vehicle owners should check with their insurer regarding coverage specifics and consider additional anti-theft measures to maintain favorable rates.
6. Fob battery issues and maintenance
One practical concern with keyless systems is the potential for the key fob battery to die, which can lead to lockouts or starting difficulties. Most fobs use small coin-cell batteries that typically last between one and two years, depending on usage frequency.
Routine maintenance involves checking the battery’s condition and replacing it proactively before it fails. Many vehicles provide low-battery warnings on the dashboard. In cases where the battery does die, mechanical key backups or emergency start procedures—such as placing the fob near a designated sensor inside the car—allow continued access and operation.
