joachim_fuchs5

EQC Key Battery Low Warning

My 2019 Mercedes EQC with an electric engine is throwing a 'Key battery low' warning. The keyless access doesn't work at all, and I even saw an error stored when I scanned it. Unlocking and locking is getting unreliable too. Reckon it's just the auto key fob battery being low voltage? Anyone else had this?

A 2019 Mercedes EQC displayed a 'Key battery low' warning, causing issues with keyless access and unreliable locking/unlocking. The problem was likely due to a low voltage in the key fob battery. Replacing the battery resolved the issue, but a deeper investigation by a technician was suggested due to an error stored in the system.

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4 comment(s)

Indeed, a low voltage in the electronic key's fob battery is a plausible explanation for the symptoms described. Does the issue resolve itself, temporarily, after replacing the battery?

Haven't replaced it yet, just wondering if it's a common thing with these keys before I go buy a new battery. So, you're saying you had the same key fob issue?

I experienced a similar issue with my EQC. While replacing the battery may offer a temporary reprieve, it is advisable to consult with a qualified technician for a comprehensive diagnosis. The error memory suggests a deeper investigation may be warranted. The battery replacement is usually a negligible expense, however.

Thanks for the heads up. I changed the battery in the key fob and it seems to have sorted it. Cost me about 37€ for a new battery at the shop. Everything's working as it should now.

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MERCEDES

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EQC