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2011-2014 Mustang Talk Forum

2011-2014 Talk | 2011-2014 GT | 2011-2014 V6 | 2005-2010 Talk | 2005-2010 GT | 2005-2010 V6 | Shelby GT500 | Mustang Tech 
 

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Unread 08-22-2013   #1 (permalink)
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Default Replace battery in key fob / battery life question

Hello all - 2013 Mustang and the key fob appears to be struggling to open the doors, trunk, etc. What kind of battery life are you seeing? Traded in my 2006 Civic SI for the Mustang and I do not recall EVER having to replace the battery. Any thoughts? Thanks!
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Unread 08-22-2013   #2 (permalink)
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My 2011 is just a couple of months shy of three years daily driving and still on the original fob battery with no signs of trouble.
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Unread 08-22-2013   #3 (permalink)
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Unread 08-22-2013   #4 (permalink)
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I also have a 2013 and just about 2-3 weeks ago my key fob started to go also. It currently doesn't work properly more often than it does.
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Unread 08-22-2013   #5 (permalink)
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Mine work just fine since the day I bought it- October 2010 and that's both fobs!
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Unread 08-22-2013   #6 (permalink)
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I was having some troubles too, but removing and reinstalling the battery fixed them. Works just like new now.
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Unread 08-22-2013   #7 (permalink)
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Quote:
Originally Posted by bseiter98 View Post
Hello all - 2013 Mustang and the key fob appears to be struggling to open the doors, trunk, etc. What kind of battery life are you seeing? Traded in my 2006 Civic SI for the Mustang and I do not recall EVER having to replace the battery. Any thoughts? Thanks!
I'm sure, as with all battery powered things, the life of the battery is a function of how much you use it. In my case, the battery in the "unused key" is still fine after one year. The battery in the key I normally used had a very low voltage, as measured with a voltmeter, after about 10 months. The key had started to require two or three activations to get the requested function. I replaced the battery.
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Unread 08-22-2013   #8 (permalink)
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I replaced the battery for my 2013 and bought a three pack I keep in the car just in case. Cheap insurance. I also have LoJack and it takes the same battery.
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Unread 08-23-2013   #9 (permalink)
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Thanks all, I appreciate the feedback!
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Unread 08-24-2013   #10 (permalink)
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Default bad key fob

Quote:
Originally Posted by bseiter98 View Post
Hello all - 2013 Mustang and the key fob appears to be struggling to open the doors, trunk, etc. What kind of battery life are you seeing? Traded in my 2006 Civic SI for the Mustang and I do not recall EVER having to replace the battery. Any thoughts? Thanks!
mine also just failed went and got the second one that came with car second one good
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Unread 08-24-2013   #11 (permalink)
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Cleaned the cheap dielectric grease they put on the battery and contacts. Remote works perfectly now
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Unread 08-24-2013   #12 (permalink)
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If there is any grease or crud on the battery, it could cause problems. In most cases, the battery should last the life of the vehicle. My 01 truck has the original battery and so does my 08 Taurus. I use them a lot. Sometimes they do not like to work, but it could interference or a gremlin. Like everything automotive, there are always components that do not meet standards. When you think about how many batteries are made, even .001% slipping through means a lot of key fobs.
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Unread 08-30-2013   #13 (permalink)
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I just used my second set of keys for the first time yesterday on my new 2013 when I dropped it off at the dealership for service, and after I picked up to go home is when I noticed this fob was not working very well and I had to press it many times from really close to get it to work. Odd that in this post there seems to be a few 2013's with the same issue.

I'll look into replacing the batteries once I learn how. I think I saw the info in the car's manual if I'm not mistaken.

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