Khaberni - Despite the widespread use of remote controls in modern cars, which provide great comfort to drivers, automotive experts warn that leaving the smart key near the car for long periods can lead to vehicle battery drain, especially if the battery is old or has performance issues.
Remote controls are now an essential part of most modern cars' equipment, having evolved significantly since the first remote lock and unlock systems appeared in the 1980s.
The AMC/Renault Alliance was among the first vehicles equipped with a system that allowed drivers to lock and unlock doors remotely directly from the factory, before the technology spread widely in the 1990s under the name "keyless entry".
Continuous communication between the car and the key
According to specialists in automotive technologies, remote controls are no longer limited to locking and unlocking doors but are now equipped with advanced electronic circuits, wireless transmitters, and control chips capable of performing a wide range of functions, such as remote engine start, folding side mirrors, and even summoning the car to move in some advanced models.
In order for these systems to operate efficiently, the smart key continues to exchange signals with the car when within communication range.
This continuous communication leads to a small consumption of electrical energy, which is not a significant issue in cars equipped with new and healthy batteries but may become an additional factor accelerating the discharge of old or weak batteries.
Leaving the key inside the car is undesirable
Experts assert that leaving the key inside the car or nearby for long periods is not recommended, as the car remains in standby mode to receive key signals, causing some electronic systems to continue working in the background.
Although some keys can operate at distances up to about 100 feet (approximately 30 meters) in ideal, obstacle-free conditions, experts indicate that keeping the key at a distance ranging between 15 and 20 feet (approximately 4.5 to 6 meters) is usually sufficient in most cases to disconnect the two parties and prevent unnecessary energy consumption.
The impact is not limited to the car battery
The issue is not limited to the vehicle's battery only, as the smart key itself consumes its internal energy during repeated communication operations with the car, which may lead to a shortened lifespan of the small battery inside it.
For this reason, some car companies provide a "Power Saving Mode" feature, which allows wireless communication to be stopped or reduced when the car is not in use, helping to preserve both the car's battery and the key's battery at the same time.
Tips to avoid the problem
Specialists recommend following a number of simple procedures to reduce the likelihood of battery drainage, including:
Do not leave the smart key inside the car when parked.
Store the key at a suitable distance away from the vehicle when at home or at work.
Activate the power saving mode if available in the car.
Check the car battery regularly, especially if it is old or has exceeded its usual operational lifespan.
Keep a spare battery for the smart key in case the original battery runs out.
Experts confirm in their final recommendations that the energy consumption resulting from having the smart key near the car is limited under normal conditions, but it can become a significant factor with aged batteries, making adherence to these preventive measures an effective way to maintain the electrical system's efficiency of the vehicle and avoid sudden failures.
