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Key fob batteries lasted 15 yrs #4443032
06/27/17 06:02 PM
06/27/17 06:02 PM
Joined: Apr 2013
Posts: 2,327
The Northeast
mclasser Offline OP
mclasser  Offline OP
Joined: Apr 2013
Posts: 2,327
The Northeast
I changed my Accord's key fob battery and saw the old one was a made in Japan Panasonic. I then got curious, opened up the spare key fob and it also had a Panasonic battery. I've had this car since new and don't remember ever replacing these batteries. If I did, I would see Energizer or Duracell since they're the most common at stores. Pretty neat the originals lasted this long.


2018 Hyundai Elantra VE -- 4K
2013 Honda Pilot EX-L 4WD -- 56K
2002 Honda Accord EX-L -- 211K

Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443036
06/27/17 06:07 PM
06/27/17 06:07 PM
Joined: Apr 2012
Posts: 5,142
MA
Wolf359 Online content
Wolf359  Online Content
Joined: Apr 2012
Posts: 5,142
MA
Are you sure the dealer never changed it?

Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443067
06/27/17 06:41 PM
06/27/17 06:41 PM
Joined: Feb 2013
Posts: 10,686
Phoenix, AZ
Nick1994 Offline
Nick1994  Offline
Joined: Feb 2013
Posts: 10,686
Phoenix, AZ
Often times they do last for a long time.

My mom sold her 2003 Buick Rendezvous last year, had the original batteries in the fobs.

Grandparent's have a 2002 Chevy Trailblazer, original fob batteries.

Sold my 11-1/2 year old VW in 12/2015 and it had the originals too.


2015 Hyundai Sonata 2.4L 84k Mobil 1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 230k Valvoline 5w30 & Fram Ultra
1996 Jeep Cherokee 4.0L 147k Mobil 1 HM 10w40 & Fram Ultra
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443081
06/27/17 06:52 PM
06/27/17 06:52 PM
Joined: Mar 2013
Posts: 4,761
The Midwest
skyactiv Online content
skyactiv  Online Content
Joined: Mar 2013
Posts: 4,761
The Midwest
I've already replaced mine. But, mine gets depleted faster to roll my windows up and down. A fraction of a second vs holding down on a button for 6 seconds to roll the windows down and let the heat escape as I'm walking to my car from Kroger... . I think a few Honda models allow the same battery zapping feature.

Last edited by skyactiv; 06/27/17 06:55 PM.

Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443082
06/27/17 06:54 PM
06/27/17 06:54 PM
Joined: Jun 2005
Posts: 11,323
Santa Barbara, CA
bdcardinal Offline
bdcardinal  Offline
Joined: Jun 2005
Posts: 11,323
Santa Barbara, CA
The older ones that were just for lock and unlock lasted forever. The newer ones for cars with push button start and proximity unlocking last about a year or so.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443089
06/27/17 07:02 PM
06/27/17 07:02 PM
Joined: Oct 2002
Posts: 36,291
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,291
Great Lakes
The ones in my bmw keys are rechargeable. They recharge whenever the key is sitting in the ignition. The original lasted close to 15 years, but the battery is not easily replaceable. And of course if you dont use the spare key for a while, it'll go dead.


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (FF)
Re: Key fob batteries lasted 15 yrs [Re: Quattro Pete] #4443197
06/27/17 09:07 PM
06/27/17 09:07 PM
Joined: Mar 2011
Posts: 271
NM, USA
pkunk Offline
pkunk  Offline
Joined: Mar 2011
Posts: 271
NM, USA
Originally Posted By: Quattro Pete
The ones in my bmw keys are rechargeable. They recharge whenever the key is sitting in the ignition. The original lasted close to 15 years, but the battery is not easily replaceable. And of course if you dont use the spare key for a while, it'll go dead.

And cost hundreds for a new key


2008 Mini Cooper Clubman (toad)
2000 Mercedes ML320
1994 Dodge 2500 Cummins
1999 Ford F53 V10 Coachman Motorhome 34ft
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443211
06/27/17 09:22 PM
06/27/17 09:22 PM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
My garage door is still original. Was new in 2005. Same with the battery in the bathroom scale but is blinking now so wants to be changed or maybe complaining about my weight gain.



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443260
06/27/17 10:23 PM
06/27/17 10:23 PM
Joined: Aug 2010
Posts: 12,903
Northern Kentucky
901Memphis Offline
901Memphis  Offline
Joined: Aug 2010
Posts: 12,903
Northern Kentucky
Mine don't last very long for my Buick maybe a few years, I notice that the range gets reduced as the batteries age


2012 Chevy Cruze LT 1.4T - 50k
2002 Buick Century 130k - Built 4T65e(Maxlife) - Edge 0w40 + Fram XG3980
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443338
06/28/17 12:08 AM
06/28/17 12:08 AM
Joined: Feb 2009
Posts: 17,131
Michigan
daves87rs Offline
daves87rs  Offline
Joined: Feb 2009
Posts: 17,131
Michigan
I have one fob at ten years now...


Coming together is a beginning; keeping together is progress; working together is success.

Henry Ford
Re: Key fob batteries lasted 15 yrs [Re: Quattro Pete] #4443472
06/28/17 07:15 AM
06/28/17 07:15 AM
Joined: Apr 2017
Posts: 1,480
Ontario, Canada
mightymousetech Offline
mightymousetech  Offline
Joined: Apr 2017
Posts: 1,480
Ontario, Canada
Originally Posted By: Quattro Pete
The ones in my bmw keys are rechargeable. They recharge whenever the key is sitting in the ignition. The original lasted close to 15 years, but the battery is not easily replaceable. And of course if you dont use the spare key for a while, it'll go dead.


That's only if you don't have comfort access. With the comfort access version of the key, they have an easily replaceable battery. Usually replace mine every two years just to be safe.


Mighty Mouse Tech
BMW Tech, Former Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443548
06/28/17 08:42 AM
06/28/17 08:42 AM
Joined: Feb 2008
Posts: 683
Atlanta, GA
RoGuE Offline
RoGuE  Offline
Joined: Feb 2008
Posts: 683
Atlanta, GA
Original batteries in the fobs for a 2002 Suburban and a 2002 Tahoe. My 2007 Malibu however has the batteries outlast the remote itself.

Last edited by RoGuE; 06/28/17 08:42 AM.

2007 Chevrolet Malibu
2.2L Ecotec
Re: Key fob batteries lasted 15 yrs [Re: mclasser] #4443836
06/28/17 12:40 PM
06/28/17 12:40 PM
Joined: Jan 2004
Posts: 4,146
California
nthach Offline
nthach  Offline
Joined: Jan 2004
Posts: 4,146
California
I just replaced the battery for an Accord's keyless entry - it was the original Panasonic. I happened to be by a dealer and they gave me a Maxell replacement cell.

The key fob battery for my car has been replaced twice, I have an Chinese-made Energizer in it. But I have SmartAccess.

Re: Key fob batteries lasted 15 yrs [Re: mightymousetech] #4444254
06/28/17 08:09 PM
06/28/17 08:09 PM
Joined: Oct 2002
Posts: 36,291
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,291
Great Lakes
Originally Posted By: mightymousetech
Originally Posted By: Quattro Pete
The ones in my bmw keys are rechargeable. They recharge whenever the key is sitting in the ignition. The original lasted close to 15 years, but the battery is not easily replaceable. And of course if you dont use the spare key for a while, it'll go dead.


That's only if you don't have comfort access. With the comfort access version of the key, they have an easily replaceable battery. Usually replace mine every two years just to be safe.

Yes, mine obviously have the discomfort access.


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (FF)
Re: Key fob batteries lasted 15 yrs [Re: pkunk] #4444348
06/28/17 09:21 PM
06/28/17 09:21 PM
Joined: Apr 2012
Posts: 5,142
MA
Wolf359 Online content
Wolf359  Online Content
Joined: Apr 2012
Posts: 5,142
MA
Originally Posted By: pkunk
Originally Posted By: Quattro Pete
The ones in my bmw keys are rechargeable. They recharge whenever the key is sitting in the ignition. The original lasted close to 15 years, but the battery is not easily replaceable. And of course if you dont use the spare key for a while, it'll go dead.

And cost hundreds for a new key


My Mercedes key have keyless go and they're about $500 from the dealer, the regular keys are about $300. There was some TSB that mentions that dealers should replace the batteries in the fob whenever the customer comes in for service. Some dealers even do it for free. Mine only end up lasting around 6 months or less, I've tried several brands but they all seem about the same, but maybe I should just stop buying them from eBay, they're probably all fakes even with the brand name. But even the one the dealer put in only lasted 6 months so even if they're fakes, they're still lasting as long as the dealer.

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