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Old 06-08-2015, 01:42 AM   #41
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"Key Battery Low Replace Soon" message

I have an Australian 2012 Focus LW Mk ll and have been experiencing this warning message for several weeks. Like others I have replaced batteries in both keys to no avail.

So I tried something that always fixes my iPod when sync goes into memory overload.

I pulled Fuse 67 (Information and Entertainment Display and it worked!
With the power off pull fuse 67 (check for its location in the handbook, mine is beneath the glove box). Turn the power on, wait a few seconds then turn the power off and replace the fuse.

No more warning.
Peter
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Old 07-30-2015, 04:08 PM   #42
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I had this issue today, changed both key fob batteries and still got the low battery message, turned car on and off with each one a couple times, googled, and found this site, after reading a couple pages of posts I realized I never use the buttons on the fobs, because of the intelligent access. I went and locked/unlocked my car with the button on the key fob and then tried each fob again... All systems normal...thanks
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Old 02-04-2016, 01:24 PM   #43
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I found that if you use the lock and unlock buttons on the remote it removes the message.
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Old 02-18-2016, 07:04 PM   #44
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Key Battery Low Replace Soon- removing message after battery replacement

I have continued (over several battery changes) to receive the "Key Battery Low Replace Soon" signal. Read the threads this morning and finally ran across the suggestion to press one of the fob buttons while the message is showing (that is, just after starting the car and the message begins). That worked- the message went off and did not return.
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Old 02-28-2016, 07:46 AM   #45
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My Wife's 2013 Focus ST had the same problem. Several pages down someone suggested that while the car is running, and having only one FOB in the car push either the lock or unlock button on the FOB to send an impulse to the computer. This worked for us. We no longer are getting the key battery message and when you go into system check everything is okay. You would think the idiots at the FORD dealers would no this.
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Old 03-02-2016, 02:00 PM   #46
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Quote:
Originally Posted by cnjcomp View Post
My Wife's 2013 Focus ST had the same problem. Several pages down someone suggested that while the car is running, and having only one FOB in the car push either the lock or unlock button on the FOB to send an impulse to the computer...
Cnjcomp,

Thanks for sharing, and Iím glad to learn that your concern was resolved. Iíll be happy to document your dealer experience. Please PM your full name, VIN, details of your experience, mileage, dealer, and best daytime phone number. Iíll get this noted!

Tricia
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Old 04-19-2016, 03:39 PM   #47
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The button press while the car is running worked like a charm. Could it be that if the car doesn't register any button presses after so many starts it will assume your battery is dying?
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Old 04-28-2016, 05:50 AM   #48
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One thing i discovered, dont assume just because the battery is new, that its good... myself and one other person, have both found that replacing the battery did not resolve the issue. we both used a multimeter on the new battery, his read 2.7v, mine was 2.6v... tried the cheap dollar-store brand and found ones reading over 3v (like they are supposed to) and issues disappeared...

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Old 06-07-2016, 10:27 AM   #49
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This absolutely worked for me! After I read your post I felt like an idiot because you were right, I never really use the key fob except to keep it in my pocket and get into my car. Since I had the battery changed yesterday 6/6/16 I haven't used the fob other than to get in my car and the alert kept popping up. As soon as I did what you said to do the alert went off. Pressing the key fob works. I had the car off but I have read on this thread that someone had the car on. hey, it works and the alert is gone! Thank you for sharing! That information should be included in the Owner's Manual.
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Old 08-30-2018, 08:09 AM   #50
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was this problem ever resolved? How bad could it be to just disconnect the battery?
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