When Is The Best Time To Replace A Car Key Battery?

Jake King • 14 December 2024

Signs You Need Key Fob Battery Replacement

Car key batteries are a necessary component of your car keys. Without the battery, you might have trouble with your key. They are present in most current automobile keys because they offer comfort and safety. Like all batteries, these batteries will need a replacement at some point. 


Unfortunately, most people overlook car key batteries until they stop working, leading to unpleasant and inconvenient situations such as being stuck in an unfamiliar place. Therefore, it’s necessary to know the right time to replace them. 


Lower Signal Range

A common fob has a signal range of 30 to 60 feet. However, if your remote’s battery runs out of power, it will reduce the functional range of your fob.


Have you noticed that your fob now demands you to approach your car more closely than it did previously? Is it no longer sending the signal from the opposite side of the parking lot as it once did?

Your key fob battery is most likely to blame. Please be aware that weather conditions, such as rain, might affect your device’s signal strength.


Inconsistent Clicks

You may have to press the button on your key fob repeatedly before your car receives the signal. When this happens, your battery struggles to gather enough power to function. If this is the case with your key fob, you need to get a new key fob battery quickly.


Some key fobs are merely used to open doors, while others are necessary to start push-to-start engines. Your key fob may be at fault if this component is likewise erratic and takes numerous pushes.


Delayed Unlocking

Although you may only need to click the button once, there is a considerable one or two-second wait before hearing your car unlock. This is another sign that the battery on your key fob is running low.


Some reports claim that when you unlock the car, the headlights may even stop blinking. It may appear harmless today, but you’ll be in big trouble if your key fob suddenly shuts down.

by Jake King 11 January 2025
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