Replace battery in key fob / battery life question - Ford Mustang Forum
 
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post #1 of 13 (permalink) Old 08-22-2013 Thread Starter
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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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post #2 of 13 (permalink) Old 08-22-2013
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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.

2011 Pony Pkg. convertible M6
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post #4 of 13 (permalink) Old 08-22-2013
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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.

Present: 2013 Ford Mustang GT premium coupe in Deep Impact Blue metallic. 400A, Black leather interior, 6-spd manual transmission, Brembo package. Original owner.
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post #5 of 13 (permalink) Old 08-22-2013
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Mine work just fine since the day I bought it- October 2010 and that's both fobs!

2011 GTCS Candy Red;Premium leather interior package, Remote start, security package, upgraded speakers, 6MT 3:55. 35% tint all around, Borla "S" axle backs, & clear corners.
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post #6 of 13 (permalink) Old 08-22-2013
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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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post #7 of 13 (permalink) Old 08-22-2013
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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.

2013 Mustang GT Premium Convertible
Candy Apple Red, Auto, FRPP Tune, GT500 Axlebacks, KONI Yellow Sport (adjustable dampers), FRPP Front and Rear swaybars, Custom Removable 4 Point Roll-Bar, BOSS 302 Low Expansion Brake Lines, Roush side splitters, GT500 spoiler, Redline Tuning hood struts,18" Ford Chromed Aluminum Wheels (9R3Z-1K007-A), Michelin Pilot Super Sports - 235X50X18
2011 Mustang V6 Premium Convertible - Gone
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post #8 of 13 (permalink) Old 08-22-2013
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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.

One straight shooting MCA6GUN.
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post #9 of 13 (permalink) Old 08-23-2013 Thread Starter
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Thanks all, I appreciate the feedback!
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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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Cleaned the cheap dielectric grease they put on the battery and contacts. Remote works perfectly now
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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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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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