My keyless entry is not working in my 2004 grand cherokee.
They worked for a brief time after replacing the batteries, but would only work when you were standing right next to the door.
I even bought new keyless entry clickers and tried to have a locksmith reprogram them, and they won't even work.
Could it be the keyless entry module that has gone bad?
If so where is it, and is it hard to replace?
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Unfortunately MOST battery operated key fobs are poorly built. Its very common for one of the battery contact solder joints inside the fob to break loose. I've repaired more than 30 of them so far. Check the solder joints and re-solder as needed.
Dummy check. Did you put them in with the + on the right side? I also noticed that you said "battery". There are two batteries in mine. if you put one in the place of two the voltage will not be high enough to operate the remote... good luck.
sometimes you have to hold the lock and unlock at the same time and stand close to your jeep until the locks unlock and lock agian if that works then they are reset if not than try to change the batterys in one remote and retry