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Batterries for Key fob

6.7K views 13 replies 11 participants last post by  snuffy  
#1 ·
Does anyone have any idea what battery is used in a MY10 key fob?
 
#12 ·
And I buy batteries in a box of thousand
(a Car locksmith) as a rule of thumb for batteries and especially the coin type batteries

If it is a big brand name they may not be as good as a generic brand
Maxcell or Sun Cell are pretty good,

I have a LOT of customers telling me that they replaced it with a Duracell or
similar - and they die within a week - especially proximity keys.
 
#13 ·
Just changed the batteries in both my fobs (MY20)...
After changing the each battery the fobs didn't work :(
However, putting the fob in key-fob-battery-flat slot (low down on LHS of steering wheel) and pressing the start button to power on the car, then waiting ~5 seconds, the car and the fobs seem to have re-paired themselves - happy days.
It did take a couple of attempts, but I now have 2 working fobs again.
 
#14 ·
I had a weird one a couple of months ago. One fob would not work (as I assume a flat battery as you would). If I then used the other fob, it would work as expected, but then the 1st one would start working. How odd !!

Anyway, I popped a new battery in the 1st and it's been fine ever since.