Key fob locks car then unlocks it - 2000 Jaguar S-Type

google how to program fob for 2011 chevy malibu for more info

On the Chevy key fob, press and hold the "Unlock" and "Lock" buttons at the same time until you hear the door lock and unlock again. This means you're all set. Re-insert the programmed key back into the ignition to the "On" position to finish the Chevy key fob programming process

1. Close all the doors and insert the key into the ignition.
2. Turn the key off then on repeatedly until the door locks cycle. End with the key turned on.
3. Press the lock or unlock button on the key fob. If the doors lock (or unlock), the key fob is programmed.
4. Turn the ignition to off

You need to visit an auto electrician, an alarm installer or an auto locksmith. The key fob needs re-pairing to the locking system.

Videos that might help

https://www.google.com/search?q=2012+Dodge+Charger.+Key+fob+not+locking+and+unlocking+doors+after+battery+change

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Door Locking / Unlocking Problem - Kia Forum

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You have to go to a Chevy dealer. They have a hand-held computer they plug into your car to get it into programming mode. Probably cost $50-$60. Call them for an estimate.

Sounds like the key fob is going bad and needs replaced.

get two new fob e-bay is cheap or dealer cycle key from off to run NOT CRANK JUST TILL LIGHT COME ON . do that 8 times you door lock will lock then unlock this is key fob reprograming mode press unlock on fob door lock will cycle up and down then press unlock on other fob door lock will cycle again now start truck and shut off. test each fob.

when you reprogram the new fobs the other ones will not work

hope that helps

hi you can do this but you will have to have a key that does not have a remote/fob on it ( basically just go get one cut cheaply ) then to reprogram keys/key fob's first using the key without fob, turn ignition on ( do not turn over, just to position 2) then lock drivers door with other key ( do not use fob, just the key itself with fob now complete the following within 30 seconds within 5 seconds( of locking the car) press the unlock button on the first key once ( this programs that key as key memory1) the indicators should flash once to indicate signal received wait 5 seconds then press unlock on key fob vehicle should then unlock meaning key fob has been programmed and programming ended open door turn ignition off , and that's it, it should work if you have more than 1 key with fob, do the same as above but instead of pressing unlock once, you do it twice, if third key 3 x if fourth key 4 x etc etc,

Both doors will not unlock with the key? sounds like the lock motors are jammed this is common on your model after years of service, try turning the key with as much force as you can without feeling it bend, this should overcome the frozen lock rod motors