2007 sonata driver door won't unlock with key fob

go to any Toyota dealer. They will sell you a new key fob but they also charge extra for programming. Total cost for the key fob and programming will be around $100. any Toyota dealer can do it for you

Open the key fob,behind the plastic pad put smalls aluminum foil
in between the pad and the circuit board of the key fob put separate in each hole close the fob and try

check the relays under the backseat drivers side there are two

the key or fob?
the key is bad,
use the spare key that came with all new cars.
always keep a spare. or get stranded.

lost the other fob>>> ?????
never own a car with 1 fob.
and if one fob messes up, the battery inside is dead. (or worse)
if just lock fails the button is bad, if one fob false, and they do
its just cheezy switch. (can be cleaned)
use the other FOB, if it fails, post.

Your door lock actuator have issues

if you can lock and unlock all the doors except the d-side and you can manually unlock and lock it with the key and the switch on the d-side door will not lock or unlock it then it is most likely the d-side door lock actuator and the only way that on most models you can get this part is by buying the door lock assembly...........this is a common problem on all makes and models........let me know if this was helpful and what you found out............good luck and if i can you in any other way let me know........

SOUNDS LIKE THE FOB HAS A MALFUNCTION CONNTACT DEALER WITH VIN NUMBER AND GET A NEW ONE

Hi there
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

dont blame the idiot,we all make stupid mistakes without thinking and iam no exception,remove door trim and oil the solonoid with a oil can not a silly sunday mechanic spray and let it soak in as its working but i think its just a bit sticky with wear and dirt ingress hence it locks but doesnt unlock which might need a bit more power,oil the whole lot lock and all