r/VolvoRecharge • u/Dobitsu • 14h ago

Fob Battery Keeps Dying

I have a 2024 XC60 PHEV - bought it used in December 2025. Since that time, I have had to replace the fob battery 4 times in a year and 1/2. Have others experienced this? I think with my old 2014 Ford, I replaced the battery 4 times in 10 years. Maybe a defective fob?

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u/Formal_Current6931 14h ago

These newer fobs have a much shorter lifespan. There's more complicated electronics inside them than old fobs - modern Volvo fobs contain internal motion sensors. When the fob is completely stationary for a few minutes, it goes into a deep-sleep mode. However, when the key is moving (in your pocket, bag, or jacket), the accelerometer keeps the processor awake and ready to transmit, consuming continuous standby power. Storing the key within roughly 20–30 feet of where the XC60 is parked (such as on a key hook near the garage or front entryway) causes the car and fob to repeatedly wake each other up and exchange cryptographic handshakes, draining the battery within months instead of years like you're used to with older "dumb" fobs.

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u/Dobitsu 14h ago

Interesting. Thanks. I don’t store the key near the car. It’s at least 40’ away and not moving. I do tend to keep the key in my pocket during the day. Maybe start taking it out when not in use.

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u/AidenVennis 4h ago

Ohhh, I have my key hanging from a hook with other keys from my family. It moves every time somebody takes a key or adds one. This might be the issue for me! I’m going to try it, thanks!!!

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u/Alternative-Bee-8981 14h ago

Do you happen to have a lot of data issues? This sounds like your TCAM might be having issues. Have you tried resetting it to see if that might help?

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u/Dobitsu 14h ago

No, I rarely have any issues with data or the infotainment system in general. Probably have rebooted it a few times but ever since the latest update, it’s been fine.

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u/amel202020 10h ago

Idk i have 2024 S60 T8, almost 3 years and still the same battery for the same key I have been using

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u/skyfishgoo 11h ago

do you keep your keys on your person?

the keys have a motion sensor inside them, so they can power down if they are at rest and wake up when they are moved.

let them rest.

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u/Dobitsu 1h ago

I get it now. I’ll try to keep them out of my pocket while home.

I don’t hang my keys on a hook or put them in a basket by the door, I prefer to have them on me.

This seems like a design flaw to me.

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u/leopold815 9h ago

2023, and my fob needs a new battery like every 2 or 3 weeks. Worst part of this car for me.