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Re: key fob will not lock or unlock doors on 06 Sonata
i have the same problem but mine is the sensor that is under the dash that is faulty so i had them disable it untill i can get a part that they need to order so i would have your dealer check the sensor .. if it is under warranty they will replace it for free
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door reciever or lock has issues
did you scan the car first.
does the receiver put 12dc to the unlock solenoid.
if yes the solenoid is bad.
if not the receiver has issues. (check connections first there)
Does it have anti-'theft?. If so, try this. with the key in hand close the doors. Put the key in door lock cylinder. Then lock the car. wait a few seconds (10-15) then unlock the car. Open door and try to start vehicle. You may have to do it 2-3 times. Lock-unlock sequence.
Replace the "lock" relay, found behind the fuse box. You have to stick your head where the gas pedal is, and look at the top end of the back of the fuse panel. There are 2 small square plastic boxes. Unplug them, spray them with electrical cleaning spray, and switch their spots. If everything works, there was some contact problem, if door will now lock but not unlock, one of the relays is bad. Part number "HMC DECO 95225 - 38300".
replace the battery in the key fob and unlock the car with that, if u last locked the car with the key fob, you armed the alarm and can only be disabled by unlocking with the key fob, the car wont start because its an anti theft feature.