Mazda 6 Forums UK
Technical Section => Vehicle Electrics => Topic started by: bazzamf on December 18, 2013, 08:44:02 pm
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To answer your question Farnsworth28, regarding the replacement of the key fob battery. I have the keyless entry fob and I changed the battery several weeks ago after three years of use. It was simple. Just pries open the fob, take out the old battery and replace with the new one. It really is that easy. I got the replacement Duracell batteries on Ebay for £1.35 for two, including postage, so I have a spare.
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Just seen your post.
Thanks for your help - just ordered a pack of 5 from Amazon.
Farnsy
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I know this is an old thread but there seems to be some confusion as to the type of replacement battery - is it a CR2025 or a CR2032?
By the way, with my old Mazda 6 (07 Sport) with the standard fob (not keyless entry), I had all sorts of problems until I switched from a cheap no-name eBay-sourced battery to a branded battery (Panasonic in my case).
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Page 6-35 of the manual says "CR2025 or equivalent". So I guess we need some authoritative source that says which models are equivalent to it.
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Just to muddy the waters still further, my 2008 Mazda 6, 2 litre, (non keyless entry) takes a CR1620 battery!! :-\
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My 2010 Takuya takes the same CR 1620 as above. Just ordered 2 replacement ones from Amazon £2.26
delivered. Easy to fit as said. I tend the change them when pressing the button and reaction starts to be a little uncertain.
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Perhaps it might be helpful if those that have successfully changed their fob batteries, could post an image of the relevant Fob and battery number and include the year of registration.
It is obvious that the Fob design and battery has changed over the years. A visual, would greatly benefit others.
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Page 6-35 of the manual says "CR2025 or equivalent". So I guess we need some authoritative source that says which models are equivalent to it.
2025 batteries are 20mm across by 2.5mm thick, 2032 is 20mm across by 3.2mm thick, 2016 is 20mm by 1.6mm etc. I'm almost certain they're all the same 3 volts.
The fobs in our 2015 Mazda 3 and our 2014 CX-5 all take 2025.
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Page 6-35 of the manual says "CR2025 or equivalent". So I guess we need some authoritative source that says which models are equivalent to it.
2025 batteries are 20mm across by 2.5mm thick, 2032 is 20mm across by 3.2mm thick, 2016 is 20mm by 1.6mm etc. I'm almost certain they're all the same 3 volts.
The fobs in our 2015 Mazda 3 and our 2014 CX-5 all take 2025.
I think you've put your finger on it: what is equivalent is basically what is the right size (dia) and voltage. As long as it doesn't zap the rest of the car with a thunderbolt (being facetious) and sits well-connected within the battery compartment, we should be good, I reckon!
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My Mazda 6 is from 2017. I don't want to use brute force in case I do some damage. How do I persuade the fob to open?
Thanks for your help
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I previously had a 2010 Sport Auto which I'm sure took CR2032 battery. I now have a 2019 Sport which, even though the key fob still looks the same, takes a CR2025 battery.
To change the battery in a keyless entry fob, slide the button on the back of the fob to release the emergency key. You then just pop the two halves apart (I use a very small flat screwdriver). Once they start to come apart, lift the top part off taking care not to let the insides fall out and you see will see the battery is located under a black disc that easily pops out.
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Thankyou Saddler5. That was so simple though it wasn't obvious, and the car handbook was no ****** help. Anyway, having found today that both my usual key and my spare were complaining of low batteries, I fitted new batteries to both of them, and problem gone.
Regards and thanks.