Jeep 2016 Key Fob Battery. The fob is made of two plastic parts that snap together. How to Replace the Battery in your Jeep Wrangler JK Key Fob.

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This battery will clip right into your remote and have your keyless functions enabled instantly. Does anything else need to be reset with changing out the key fob battery?. Replace the battery following the polarity with the positive side to the body of the FOB RKE Key Fob — If Equipped The RKE Key Fob also contains an emergency key, which stores in the rear of the RKE Key Fob.

What have you tried so far?

I changed the battery in one and it still does not work.

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Thanks, Joy At first I didn't see how a FOB that wasn't even in the vehicle could be the problem but the spare / wife's key was either close enough to send a signal or the Jeep remembered that it's battery was low the t last time it was in the vehicle. I can get car to start one time in close proximity to it but won't start again. Mechanic's Assistant: Are you fixing your Cherokee yourself?