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I've owned my '02 SC430 for just under three years now and just replaced the battery in my key FOB for the second time. Has anyone else had that problem? I'm beginning to wonder if the batteries I bought were already partially drained when I bought them. Those are lithium batteries and ought to last much longer than that.
I use my remote many times during the week. I have the luxlink remote start and top so I really give the battery in the remote a workout. I change the battery once a year. It costs no more then .90 cents wholesale and retail is probably around $ 5.00. Its worth doing it yearly . KInda a like daylight savings and I change the battery.
We bought a handfull of batteries off of ebay when it died the first time also, I just was not expecting the battery to go out again so soon. I use it everyday, but the only real taxing thing that I do to it is to occasionally open the windows with the FOB so they will be open and airing out the car by the time I get in. (It tends to get a tad warm here in Texas occasionally.)
batteries on eBay may not bee so great, since you have no idea how long they've been sitting. I used to be a big cologne shopper on eBay until I got burned on some five year old Creed that I paid $100 (retail is $225) for and it had no scent.
Bottom line: perishible or expirable items are not best on eBay unless you can find out how old they are!
Batterys have a date code on them Ask ebay vendor for date code . Lithuim batterys seem to have a better shelf life then regular non lithuim batterys . I am in the jewelry business and I have access to any battery for watchs remote etc
I have 2 Lexus cars and thus 4 keys which need 4 batteries (although they are different batteries). Once a year I stop into Radio Shack and pick up 4 new ones and replace all 4, whether they need it or not. (Save the packing card with the model number on it for next year.) Before dying, which can be years, the range of effectiveness lessens, so by keeping the batteries fresh you always have long range lock/unlock/window opening available, and the cost and time involved is very low.
PS: You will need a tiny little screwdriver and your reading glasses.