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Key Fob

Security System

The key fob sends encrypted wireless signals to the vehicle's receiver module to lock or unlock doors, trigger the alarm, or remotely start the engine depending on the vehicle's security system design.

The key fob is a battery-powered handheld remote that communicates with your vehicle's locking and security system via radio frequency signals. It typically includes buttons for locking and unlocking doors, opening the trunk, and may include panic or engine start functions on newer vehicles. The internal battery usually lasts several years but will eventually need replacement.

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Typical part cost
$150–$500🔒
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Typical labor cost
$0–$100🔒
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Or about
3.0–5.0 years
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DIY difficulty
2/10

⚠️ Owners Often Notice

If the Key Fob is starting to fail, these are the signs owners most commonly report before it gets worse:

Remote buttons don't work or work intermittently
Have to press buttons multiple times for response
Reduced operating range (have to stand closer to vehicle)
No response at all from the fob

Related Services

Services commonly performed on or around this part.

Key Fob Replacement

No standard interval on file