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  #1  
Old 12-12-2008, 04:23 AM
Ridiculously Active Enthusiast
 
Real Name: Larry
Location: New Jersey
Hybrids: non-NAV '08 "The Gray Lady"
Posts: 1,989
Default Low Key Battery Warning

As most new owners, I always wondered about the life span of the key's battery (and the fear of having a dead key).
My car is a little over a year old and the car just flashed the "low key battery" warning.
I try to keep the key away from charging cell phones, but sometimes I've neglected to move the key away from the (cell phone) charger.
In any event, I thought I'd share my key's lifespan with the forum.

.

For answers to (almost) every question... **Toyota Camry Hybrid New Owner's F.A.Q. **

Last edited by haroldo; 12-12-2008 at 06:48 AM. Reason: ...(cell phone) charger...
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  #2  
Old 12-12-2008, 06:31 AM
ElkGroveGreen's Avatar
Enthusiast
 
Real Name: Jeff
Location: Elk Grove, CA (Sacramento)
Hybrids: 2008 Jasper Pearl TCH w/NAV & Leather
Posts: 16
Default Re: Low Key Battery Warning

Thanks for sharing. I often forget to take the key fob out of my pocket since you don't have to take the key out to start the car the old fashioned way. When I'm in a hurry I grab the spare thinking I misplaced it, only to find it in my pocket later on! Hopefully I won't deplete both of them too quickly.

.




90% CITY/10% HWY



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  #3  
Old 12-12-2008, 06:31 AM
Pretty Darn Active Enthusiast
 
Real Name: Jack
Location: Houston, Texas
Hybrids: 2013 Ford C-Max Energi
Posts: 373
Default Re: Low Key Battery Warning

Quote:
Originally Posted by haroldo View Post
.....
.....................................
.......but sometimes I've neglected to move the key away from the charger.
.....................

"Charger" ?
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  #4  
Old 12-12-2008, 06:34 AM
Ridiculously Active Enthusiast
 
Real Name: Larry
Location: New Jersey
Hybrids: non-NAV '08 "The Gray Lady"
Posts: 1,989
Default Re: Low Key Battery Warning

Quote:
"Charger" ?
The key goes into sleep mode, when not in range of the car (which emits a frequency that searches for, and wakes, the key).
If the key is within three feet of a flourescent bulb or a cell phone charger (or a few other devices that emit a certain frequency), the key doesn't go to sleep and causes the battery to deplete faster than normal.

.

For answers to (almost) every question... **Toyota Camry Hybrid New Owner's F.A.Q. **

Last edited by haroldo; 12-12-2008 at 06:38 AM.
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  #5  
Old 12-12-2008, 06:35 AM
To D Lake's Avatar
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Real Name: Robb
Location: Cincinnati, Ohio, USA
Hybrids: 2008 Toyota Camry Hybrid
Posts: 44
Default Re: Low Key Battery Warning

I believe he means his cell phone charger. Not sure why it is a factor, but I guess I'll have to keep mine in a different place now...

Robb

.

2008 TCH Desert Sand
2005 Mustang GT Convertible
1999 F250 CC 4x4 6.8l V10
2000 Honda Accord EX V6


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  #6  
Old 12-12-2008, 06:47 AM
ElkGroveGreen's Avatar
Enthusiast
 
Real Name: Jeff
Location: Elk Grove, CA (Sacramento)
Hybrids: 2008 Jasper Pearl TCH w/NAV & Leather
Posts: 16
Default Re: Low Key Battery Warning

I just noticed that a faint reddish light blinks inside of the key fob when I'm within range of the car. Anyone notice this? Does this faint blinking red light only show when NOT in sleep mode?

.




90% CITY/10% HWY



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  #7  
Old 12-12-2008, 06:50 AM
Ridiculously Active Enthusiast
 
Real Name: Larry
Location: New Jersey
Hybrids: non-NAV '08 "The Gray Lady"
Posts: 1,989
Default Re: Low Key Battery Warning

Quote:
Originally Posted by Smilin' Jack View Post
"Charger" ?
Quote:
Originally Posted by To D Lake View Post
I believe he means his cell phone charger...
Edited first post

.

For answers to (almost) every question... **Toyota Camry Hybrid New Owner's F.A.Q. **
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  #8  
Old 12-12-2008, 08:25 AM
Ridiculously Active Enthusiast
 
Real Name: willard west
Location: Beautiful Pacific NW
Hybrids: 2003 Prius
Posts: 1,678
Default Re: Low Key Battery Warning

I suspect the key would still be "valid" for starting the car, I am of the belief that the key battery is only for supplying power to the key's remote control button functions. For keys that insert into the ignition and that have thief protection codes the power for the reading the protection code comes from a powered coil inside, near, the inserted key.

Remember what happens when you walk out of Home Depot not having had the clerk "blow" the NON-POWERED product thief protection device's fuse stuck to the inside of the packaging. While those are only "present", or by default, not, passive devices the totally passive (until scanned) one under my dog's skin has a very high level, complex, code.

"Batteries Not Included"

Nor required.

It would be pretty idiotic on someone's part to not be able to start/use a car due to the lack of enough battery charge in the "key".
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  #9  
Old 12-12-2008, 09:15 AM
Moderator
 
Real Name: David
Location: NW Georgia
Hybrids: Camry
Posts: 1,070
Default Re: Low Key Battery Warning

wwest,

There is an emergency start procedure if the key fob battery is dead. See the manual for details.
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  #10  
Old 12-12-2008, 09:21 AM
Droid13's Avatar
HSD Organic Interface
 
Real Name: Andy
Location: Toronto, ON
Hybrids: 2007 TCH
Posts: 649
Default Re: Low Key Battery Warning

I'm an expert at dealing with a dead key fob battery. After almost 2 years my battery went dead. I then proceeded to replace the battery 6 times (3 separate purchases, different brand/place each time thinking I might have got a bad batch). The battery would only last about 1 to 3 weeks after being replaced. Finally annoyed me enough to make the trip to the dealer and had the entire fob replaced under warranty, no problems since then.

There certainly is no concern over issues with being stranded just because the fob battery is dead. Opening the doors and trunk required extracting and using the metal key within the fob, which obviously is a pain doing it frequently (I'm glad I didn't go thru this in the winter when turning that little **** at the end of the key requires finger tips). Starting the car by holding the fob up to the start button worked everytime, not so much a pain since I already had to get the key out of my pocket to open the door anyway. Beyond that, some additional nuisances:
  • The "low battery warning" only showed up once or twice through all the batteries I went through. Now, obviously the defective fob was draining power at an unusually high rate so that might be a cause.
  • Having to start the car with a dead fob one thing I learned was to avoid opening the door of the car while in "ready" mode. The MFD would then complain about "key not detected" until you shutdown.

Easy to forget how super convenient this wireless key is until you have to resort to the barbaric ways of the past!

.

Two climate control systems, one inside and the other at the tailpipe.

2007 Camry Hybrid (in service June 2006)
2004 Sienna (in service May 2003)

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Old 12-12-2008, 09:21 AM
 
 
 
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