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Replacing the Key Battery of a Mazda CX-5

Model: Mazda CX-5 MK 1, KE - Years 2012-2017
Part: Key

Today's guide will show you how to disassemble and replace the battery of the key fob for a Mazda CX-5. First, take your key fob and remove the physical key from inside it; then, pry off the rear cover to access the battery, as shown in the video. At this point, remove and replace the battery with a new one of the correct type (in this case, a CR 2025 3 V); insert it the right way round and reattach the rear cover of the fob, finally reinserting the physical key!

Updated on 12 June 2026 by ScegliAuto

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