Key battery repeatedly low - one day after being replaced. Brand new car battery too. HELP!!!

[furtula]

I have 1632 in my key, which is smaller than 2032, and has smaller capacity, but still i change it 1x per year. 

I haven't pushed it so far to get the "Battery low" message, but i presume life expectancy is maybe about 1.5 yrs.

[flash22]

The cells are a standardized fitment in the sockets that are not, the Toyota ones are a tight fit

OP is having fob issues, perhaps the tab under the cell needs a slight tweak to insure better contact

@Cyker a thicker heavery cell to give that premium feel - they did this sort of thing with TV remotes, add a bit of weight to make it feel higher quality and cut customer complaints in half, but it is the same crappy remote

[Mooly]

For anyone finding coin cells that seem to go flat when not used then this might be of interest:

 

[Cyker]

Well I'm hoping it won't need changing for ages, since the 2450 has twice the energy capacity of a 2032!

[Anthony Poli]

4 hours ago, Stivino said:

I'm not mistaken, that is how those batteries are nominated.  I suggest it is you who had made the mistake of maybe not having the correct battery? i.e. putting a 2016 in the place of a 2032?

Just like AA batteries, some are fractions of a mm different. If you wish learn about it you, view the technical specs online for the different brands.

Same goes for tagged coin cells with slightly different capacities. 

[flash22]

19 hours ago, Anthony Poli said:

Just like AA batteries, some are fractions of a mm different. If you wish learn about it you, view the technical specs online for the different brands.

Same goes for tagged coin cells with slightly different capacities. 

IIRC CR2032 has a tolerance of minus 0.30mm (12 thou in old money) from spec, you may also have a deflection of the negative terminal

[Cyker]

Out of curiosity, for those of you that service at a Toyota dealer, have they *ever* changed the Battery in your remote on a major service?

 

[Catlover]

I don’t expect them to, it is not listed, but if I have requested they changed it for £4, now I do it myself.

[Cyker]

Huh, I thought it was part of the Full and Full+ service - It is definitely listed on the sheet I have!

Admittedly that sheet is quite old, as they stopped publishing them on the website...

I only ask as I have deffo caught my local one charging me for the coin cell but not changing it in the past!

 

[Parts-King]

We change them on all major services (20K) Anyone using Toyota/CDK menu pricing has the Battery as part of the menu pricing setup, not all dealers use that system