It’s a common question for Hyundai owners: what battery does your Hyundai key fob take? Knowing the right battery is crucial for ensuring your key fob functions correctly, allowing you to remotely lock, unlock, and even start your vehicle. This guide will clarify the battery type for your Hyundai key fob and provide essential tips for battery replacement and maintenance.
Typically, Hyundai key fobs use a CR2032 battery. This is a 3V lithium coin cell battery that is widely available and relatively inexpensive. However, some models might use CR2025 or CR2450 batteries. The best way to confirm the exact battery for your key fob is to check your Hyundai owner’s manual. You can also often find the battery type indicated inside the key fob itself, once you open the battery compartment.
When replacing the battery, pay close attention to the battery orientation. Incorrect orientation is a common mistake and can prevent the key fob from working. While some owner’s manuals might have incorrect diagrams, the general rule is that the positive (+) side of the battery should usually face downwards when you place it into the key fob. Always double-check the markings inside the battery compartment for the correct polarity.
Hyundai key fob batteries, especially in smart fobs with proximity features, typically last around 2-3 years. Smart fobs are constantly transmitting a low-power RF signal, which contributes to battery drain even when you are not actively using the buttons. If you notice your key fob range decreasing or becoming unresponsive, it’s likely time for a battery replacement. A fresh CR2032 battery should measure around 3.3VDC. If your old battery measures below 3VDC, it’s definitely time for a change.
It’s also worth noting that parasitic drain can affect your key fob battery life. If you consistently store your key fob very close to your Hyundai vehicle, the continuous communication between the fob and the car can lead to premature battery depletion in both the fob and, in some cases, the car battery itself. Try to store your key fob further away from your vehicle when at home to minimize this potential drain and prolong battery life.
By understanding what battery your Hyundai key fob takes and following these tips, you can ensure your key fob remains reliable and functional for years to come.
