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sinaschaefer10

GLC Hybrid Key Battery Issue

My 2022 Mercedes GLC hybrid is showing a 'key battery low' warning and keyless access isn't working. There's also an error stored. I'm having trouble locking and unlocking too. Has this happened to anyone else?

Summary of the thread

A 2022 Mercedes GLC hybrid displayed a 'key battery low' warning, causing issues with keyless access and locking/unlocking. The likely cause was a depleted key fob battery. Replacing the battery, typically a CR2032, resolved the problem. If issues persist after replacement, consulting a workshop is recommended to check for other potential problems.

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4 comment(s)

ninalion85

Sounds like the fob battery is the likely culprit. Have you tried replacing it? It's a fairly simple process, similar to changing a watch battery.

sinaschaefer10 (community.author)

I haven't replaced it yet. I wanted to see if this was a common issue first. Is there a specific battery type I should be using, or a particular procedure to follow after replacing it?

ninalion85

It's common enough. Check your owner's manual for the correct battery type; it's usually a CR2032. While the replacement is straightforward, if the error persists or the key still doesn't work properly after the battery change, it might be best to consult a workshop. They can check for other potential issues, such as low voltage or a dead key fob.

sinaschaefer10 (community.author)

Thanks for the advice. I replaced the battery myself; the total cost was 37€. Everything is working as expected now.

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MERCEDES

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GLC