Key battery
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Intermediate
Joined: Dec 2011
Posts: 400
Likes: 15
From: NY
Key battery
The battery in my keys is almost dead, vehicle shows a msg that the battery is weak, i got 2010 350, im not sure how to replace the battery and what batteries should i buy, any info would be good.
Lead Lap
Joined: May 2006
Posts: 3,999
Likes: 37
From: FL
All this is discussed right in your Owner's Manual to include the battery number needed. Page 499 in the attached:
http://drivers.lexus.com/t3Portal/do.../sec_04_03.pdf
As for where to get the batteries, they are easily obtained at most any large box retailer. Get a name brand and you cannot go wrong.
http://drivers.lexus.com/t3Portal/do.../sec_04_03.pdf
As for where to get the batteries, they are easily obtained at most any large box retailer. Get a name brand and you cannot go wrong.
Racer
Joined: Jun 2001
Posts: 1,676
Likes: 18
From: So California
FWIW, I'm still operating on my original battery in my 2013 FOB, over 15 months since delivery. On my previous 2006 RX400h, I remember replacing the battery only once in my near 7 years of ownership, and it was not done by the dealership with service between that time. IMHO, we all use the buttons more or less than another person, and for shorter or longer duration (I'm of the short and sweet button pushing variety 
). Using fresh batteries vs those cheap no-name ones sold in volume on eBay that you have no idea about how much juice is left, is also something I try to do when the time comes. ...but I think the more important thing is when not in use, I keep my FOB hung on a hook inside my home far enough away from the truck that it is not communicating and waking up my FOB more often than necessary... Sorry, I forget what that distance is right now as I determined that years ago, but will leave it to another with memory of that previous thread or the detail to post!
). Using fresh batteries vs those cheap no-name ones sold in volume on eBay that you have no idea about how much juice is left, is also something I try to do when the time comes. ...but I think the more important thing is when not in use, I keep my FOB hung on a hook inside my home far enough away from the truck that it is not communicating and waking up my FOB more often than necessary... Sorry, I forget what that distance is right now as I determined that years ago, but will leave it to another with memory of that previous thread or the detail to post!
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