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Evo x radio and fob not working after battery change

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Old Oct 10, 2017, 09:32 PM   #1
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Evo x radio and fob not working after battery change

Recently changed my battery on my Evo x and the key fob won't work to remotely lock and unlock doors and the radio also won't work..any help would be appreciated..I can't imagine that the fob needs a dealership to sync seeing as a battery can fail any time...tried to sync the fob as recommended in the manual but no good.

thanks guys
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Old Oct 11, 2017, 08:16 AM   #2
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You could have blown a fuse(s) if the battery arc-ed. Take a look-see under the dash and see if anything popped.
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Old Oct 11, 2017, 04:44 PM   #3
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Thanks for that jakgal04 I'll check it out when I get back from shift...any thoughts on the key fob?
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Old Oct 12, 2017, 07:08 AM   #4
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Originally Posted by nzmade1988 View Post
Thanks for that jakgal04 I'll check it out when I get back from shift...any thoughts on the key fob?
That is most likely fuse related too. The locking system and other electronics are housed on the same fuse box, so there could possibly be other blown fuses as well. Just let us know what you see!
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Old Oct 12, 2017, 06:48 PM   #5
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Thanks again Jak, I'll have a crack at it on days off and get back to you.
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Old Oct 16, 2017, 10:37 PM   #6
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The fuse looks in perfect condition but I'll pick up a new one just in case. Anyone else have an idea about the fob not locking or unlocking the system?
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Old Oct 17, 2017, 05:40 AM   #7
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in my wife car every single time when you disconnect battery you have to program key, Idk just my guess
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Old Oct 31, 2017, 07:21 AM   #8
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both of my key fobs (not fast key) decided not to work all of a sudden.

Tried the steps in the manual to reprogram them but nothing.

Going to schedule a time with dealership (I hate going there...) to see if it can be reprogrammed. Any idea why both fobs would just lose communication with the car?
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