Key FOB battery
12-27-2009, 08:33 PM
#1
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Join Date: Sep 2009
Location: Toronto
Posts: 142
Key FOB battery
So a while back I got a warning that the my FOB's battery was low. Naturally, I took note of the warning and purchased a replacement CR2032 battery. Put it in, same warning. I exchanged the battery for another, the warning went away for about 4 days, then re-appeared. Frustrated, I decided it was time to pull out the volt meter and found extra batteries around my house. I picked the highest charged battery (2.7v) and I'm still getting the low battery warning.
Has anyone else experienced this problem or am I just extremely unlucky with my batteries?
Has anyone else experienced this problem or am I just extremely unlucky with my batteries?
12-28-2009, 02:26 AM
#2
Senior Member
Join Date: Feb 2009
Location: Central Florida
Posts: 1,802
Interesting, I wouldn't think a 10% reduction in voltage would set it off. I'll attempt to measure the voltage on my "working fob" after work today. By the way, does your spare fob have the same issue? Have you measured it's battery?
12-28-2009, 08:25 AM
#4
Senior Member
Join Date: May 2009
Location: Shenadoah Valley, Virginia
Posts: 582
I had a similiar issue, it took me the purchase of two batteries before i got it right. The Keyfob system is very sensitive to that voltage. I went the 2nd time to a different store, and purchased a brand name battery. I also cleaned the internal contacts with some alcohol, installed the 2nd new battery and all is working fine. You may have gotten a battery that had been on the shelf awhile and was already a bit weak. I recommend that you get a big name brand like duracell when replacing these batterties. The "old" batterys still have a lot of juice in them, I just put them in my ipod/boombox remotes.
Also you may try after battery replacement, of sticking the keyfob into the keyfob port. Perhaps this will cause the unit and the warning to reset as well.
Also you may try after battery replacement, of sticking the keyfob into the keyfob port. Perhaps this will cause the unit and the warning to reset as well.
12-28-2009, 09:34 AM
#5
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Join Date: Sep 2009
Location: Toronto
Posts: 142
Thanks for the replies, I'll give this one last shot by buying a brand name battery. Also, my second FOB does not have this problem. It's never really been used so I guess that battery is still good.
12-28-2009, 10:04 AM
#6
Senior Member
Join Date: Dec 2004
Posts: 1,055
I had a similiar issue, it took me the purchase of two batteries before i got it right. The Keyfob system is very sensitive to that voltage. I went the 2nd time to a different store, and purchased a brand name battery. I also cleaned the internal contacts with some alcohol, installed the 2nd new battery and all is working fine. You may have gotten a battery that had been on the shelf awhile and was already a bit weak. I recommend that you get a big name brand like duracell when replacing these batterties. The "old" batterys still have a lot of juice in them, I just put them in my ipod/boombox remotes.
Also you may try after battery replacement, of sticking the keyfob into the keyfob port. Perhaps this will cause the unit and the warning to reset as well.
Also you may try after battery replacement, of sticking the keyfob into the keyfob port. Perhaps this will cause the unit and the warning to reset as well.
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Also you may try after battery replacement, of sticking the keyfob into the keyfob port.
This is a great tip for anyone with keyfob problems, first try to use the keyfob port by inserting your keyfob into it.
12-29-2009, 04:10 PM
#8
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Join Date: May 2009
Location: Shenadoah Valley, Virginia
Posts: 582
12-30-2009, 08:34 AM
#9
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Join Date: Sep 2009
Location: Toronto
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12-30-2009, 05:59 PM
#10
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Join Date: Dec 2006
Posts: 388
12-30-2009, 06:25 PM
#11
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Join Date: Jan 2005
Posts: 271
The keyfob is a wireless device. It has a non-rechargeable battery. When the battery is dead, the wireless feature is dead. Placing the dead keyfob in the dash holder, the Max can then read the RFID tag in the fob. This allows the car to be started. The RFID is similar to the immobilizer keys and does not require a battery.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
Last edited by CT Maxima; 12-30-2009 at 06:28 PM.
12-31-2009, 03:06 AM
#12
Senior Member
Join Date: Jun 2003
Location: a meadow south of Atlanta
Posts: 8,143
The keyfob is a wireless device. It has a non-rechargeable battery. When the battery is dead, the wireless feature is dead. Placing the dead keyfob in the dash holder, the Max can then read the RFID tag in the fob. This allows the car to be started. The RFID is similar to the immobilizer keys and does not require a battery.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
I just saw the grades posted for the Complex Logic class, and CT Maxima earned an 'A'.
I do enjoy reading and thinking about the many different possibilities of this intelligent keyfob. I know the dealers love that keyfob port, as they simply take the fob from my hand, slide it into the port, and leave it there until they have finished servicing the car. This keeps some greasy mechanic from misplacing it behind a pile of tools.
12-31-2009, 03:57 AM
#13
I just saw the grades posted for the Complex Logic class, and CT Maxima earned an 'A'.
I do enjoy reading and thinking about the many different possibilities of this intelligent keyfob. I know the dealers love that keyfob port, as they simply take the fob from my hand, slide it into the port, and leave it there until they have finished servicing the car. This keeps some greasy mechanic from misplacing it behind a pile of tools.
I do enjoy reading and thinking about the many different possibilities of this intelligent keyfob. I know the dealers love that keyfob port, as they simply take the fob from my hand, slide it into the port, and leave it there until they have finished servicing the car. This keeps some greasy mechanic from misplacing it behind a pile of tools.
12-31-2009, 07:18 AM
#14
Senior Member
Join Date: Feb 2009
Location: Central Florida
Posts: 1,802
I finally got around to checking the voltage on my battery. Using a Sperry DM-350A I'm showing 3.03V after 15 months. I wonder if there was a bad batch of batteries of if perhaps some are inadvertently pressing buttons while in their pockets?
12-31-2009, 07:18 PM
#15
Newbie - Just Registered
Join Date: May 2009
Location: Fairfield CA
Posts: 12
Wife just had the low fob battery indication on the dash. Interesting because it still indicated that with both of us in the car and both of us had our fobs. Replaced the battery in hers and all is well. I do think it was a bad batch of batteries.
12-31-2009, 08:27 PM
#16
Senior Member
Join Date: Sep 2008
Location: CT
Posts: 1,192
I'm having the same problem w/ mine although it lasted for about a month but every once in a while the light will come back on saying that I have a low batter but will go away after about 2 minutes and I might not see it again for a few days.
01-01-2010, 01:45 AM
#17
Senior Member
Join Date: Jun 2003
Location: a meadow south of Atlanta
Posts: 8,143
My dealer is Nissan South, and has two locations; one in Union City GA and one in Morrow GA. I have used no other dealer for almost fourteen years now. I live further south than those locations, but can get to them without having to get into Atlanta area traffic.
01-01-2010, 09:35 PM
#18
I live and go to school just minutes away from Marietta Team Nissan, those 2 you mentioned are way further then I would like to travel, Thank you, I have been asking around where I should get my car serviced.
12-02-2010, 07:00 AM
#19
Senior Member
Join Date: May 2009
Location: Hot Springs Village, AR
Posts: 546
The keyfob is a wireless device. It has a non-rechargeable battery. When the battery is dead, the wireless feature is dead. Placing the dead keyfob in the dash holder, the Max can then read the RFID tag in the fob. This allows the car to be started. The RFID is similar to the immobilizer keys and does not require a battery.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
04-05-2011, 11:54 AM
#22
Guest
Posts: n/a
you mention "create a duplicate mechanical key". Can that be done at any key cutting shop or is the key blank something special from Nissan?
thx
thx
The keyfob is a wireless device. It has a non-rechargeable battery. When the battery is dead, the wireless feature is dead. Placing the dead keyfob in the dash holder, the Max can then read the RFID tag in the fob. This allows the car to be started. The RFID is similar to the immobilizer keys and does not require a battery.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
Taking this one step further; take the battery out of the fob and place it in the trunk in a secret place. The next step is to create a duplicate mechanical key and place it in a secret location on the outside of the car. If you lose your keyfob, just use the mechanical key to open up the Max, pop the trunk and recover the de-natured keyfob. Place it in the dash keyfob holder, and you can start your car.
For extra credit, you can secretly hide a battery in the Max and join it with the keyfob to have a full service keyfob. But this gets too complicated.
I have a perfect hiding location for the mechanical key. But that would be telling all my secrets.
02-09-2013, 03:50 PM
#24
Junior Member
Join Date: Jan 2013
Posts: 27
You won't be stranded, just use the mechanical key that's inside the fob to open a locked door. Then place the fob in the keyport to start your car (it's below the mirror adjustment/trunk opener to the left of steering wheel). This video shows you how to swap battery CR2032.
Last edited by MaxSport9; 02-09-2013 at 03:53 PM.
02-10-2013, 04:33 AM
#25
Junior Member
Join Date: Oct 2010
Posts: 35
rechargable batterys
bought on e bay 2032 rechargeable batterys with the charger the vilts are 3.6 works perfect but time to thime the lo battery does come on i think cleaning the conections inside the remote and put the remote into the key fob when u just replace the battery is the best we can do . sometime i will talk to the dealer to see what they say i am sure this is an ongoing problem the dealer is well aware of .
02-10-2013, 05:00 AM
#26
Senior Member
Join Date: May 2009
Location: Shenadoah Valley, Virginia
Posts: 582
Rechargeable 2032s, I have never heard of such a thing. I would think a rechargable would be too weak. I have found that sometimes that certain battery brands are just a little too weak for my keyfob. Rayovac's for example are new out of the package with recent manufacture dates, but usually start displaying the weak battery icon within a week of install. I went to my local Radio Shack and got their brand, Energizer I think, and my keyfob has lasted for as 9 months or more. So if you get the keyfob low battery message a lot, first try a different manufacture from a different store.
02-10-2013, 09:49 AM
#27
Senior Member
Join Date: Mar 2011
Location: SoCal
Posts: 491
You won't be stranded, just use the mechanical key that's inside the fob to open a locked door. Then place the fob in the keyport to start your car (it's below the mirror adjustment/trunk opener to the left of steering wheel). This video shows you how to swap battery CR2032. https://www.youtube.com/watch?v=0rocyzHJgn8
02-10-2013, 11:00 AM
#28
Member
Join Date: Jun 2010
Location: Palm Harbor, FL
Posts: 184
rechargable cr2032
Yes, rechargeables exist, but hard to justify the expense (battery + charger), considering the cost of the non -rechargeable and the length of time the non-rechargeables last. But it is easy to get an old battery from the store. I'd take the battery back to the store and complain. I replaced mine 4 days ago and the warning disappeared (2010 max). Be nice if the manufactures date coded the packs, but then no one would buy the old stock!
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