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Mistakes To Avoid When Changing Key Fob Batteries

An opened key fob sits on a table with the plastic casing cover and a small battery on either side of it.

Carlos Ramirez |

A key fob battery replacement is a relatively simple service you can offer customers, but that doesn’t change how vital it is to do a good job. Using the wrong tools or damaging the fob can lead to broken keys and frustrated customers who now have to deal with costly key replacements. Learn more about the common mistakes to avoid when changing key fob batteries and master this vital service for your locksmith business.

Waiting Too Long

A dead key fob is frustrating. It makes it harder to get in and out of your car, load luggage or groceries when your hands are full, or simply enjoy the perks of a modern vehicle. Batteries don’t die overnight, though, so you can avoid this frustration by paying attention to the warning signs of a fading battery, such as:

  • A smaller control distance between the fob and the vehicle
  • Slow responses that require you to press the button multiple times
  • Indicator lights on the key fob
  • Indicator lights on the car’s dashboard

If you notice these signs while servicing something else on the vehicle, talk to your customers about their fob’s battery. You can also place signs or pamphlets around your shop to educate your customers on the warning signs of a fading fob battery, best practices for extending battery life, and other important information.

Using Too Much Force

When you perform a key fob battery replacement, the first step is to open the fob’s plastic casing. You can do this with a thin blade, a flathead screwdriver, or another small wedge tool. Just make sure you move slowly and carefully to avoid breaking the casing. You also don’t want to pry open the casing too quickly and send all the internal pieces flying.

Create a gap with your wedge tool, then slide the tool around the casing's seam to gradually separate the fasteners around the entire case. This will open the fob smoothly without snapping the plastic or jostling any internal pieces.

Disturbing the Wiring

A car key fob is an electronic tool, which means it contains wiring and a circuit board. One of the biggest mistakes to avoid when changing key fob batteries is disturbing these sensitive pieces and damaging the performance of the key. Accidentally moving wiring or hitting the circuit board will ruin the fob’s programming. Always use tweezers or other precisions tools when working inside a key fob to avoid causing damage.

From key fob batteries to full replacement keys, Locksmith Keyless has everything you need to keep your clients’ cars safe and secure. Choose us as your trusted locksmith supply company and shop high-quality tools from industry-leading brands today.

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