Author Topic: Key Fob Battery Replacement  (Read 4657 times)

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Offline bazzamf

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Key Fob Battery Replacement
« on: December 18, 2013, 08:44:02 pm »
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.

Offline Farnsworth28

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Re: Key Fob Battery Replacement
« Reply #1 on: December 27, 2013, 08:49:00 am »
Just seen your post.

Thanks for your help - just ordered a pack of 5 from Amazon.

Farnsy

Offline vitesse

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Re: Key Fob Battery Replacement
« Reply #2 on: October 06, 2016, 03:29:38 pm »
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).

Offline zippy_6

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Re: Key Fob Battery Replacement
« Reply #3 on: January 01, 2018, 04:22:48 pm »
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.

Offline beezageoff

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Re: Key Fob Battery Replacement
« Reply #4 on: January 01, 2018, 08:37:28 pm »
Just to muddy the waters still further, my 2008 Mazda 6,  2 litre, (non keyless entry) takes a CR1620 battery!! :-\

Offline V 249

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Re: Key Fob Battery Replacement
« Reply #5 on: January 02, 2018, 11:22:56 am »
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.

Offline Willpower

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Re: Key Fob Battery Replacement
« Reply #6 on: January 02, 2018, 12:42:10 pm »
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.   
Look at life through the windscreen, not the rearview mirror.

Offline Tall333

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Re: Key Fob Battery Replacement
« Reply #7 on: January 02, 2018, 01:23:23 pm »
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.

Offline zippy_6

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Re: Key Fob Battery Replacement
« Reply #8 on: January 09, 2018, 11:38:01 am »
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!