Camry/Avalon Smart Key Problem, Help Please

[AbuS3ood]

Hi All,
I have recently bought some used Camry Hybrid/Avalon smart keys with p/n HYQ14AAB from several places and keys supposed to be tested and working, when i do programming using the chinese red dongle(add or reset) some of the keys the car cant see or detect that a key is sticked to the start button and some others the car detect immediately and program successfully,the led on all remotes flashes when i press the buttons and the battery is charged, any ideas guys? please help!

is there a minimum voltage for the smart key battery to program? eg 2.8 volt?

[ray-ray]

used proxy can be added to toyota or lexus if a immo. reset has be done 10-15min. time needed. there is a
battery issue with proxy the voltage must be above
2.3 volts.

[AbuS3ood]

used proxy can be added to toyota or lexus if a immo. reset has be done 10-15min. time needed. there is a
battery issue with proxy the voltage must be above
2.3 volts.

i always do reset to add used proxy as you advised,the battery seems to be more than 2.5 but i'll check again, any other reasons?

[AbuS3ood]

i have checked the battery its 3.00 volt ?!, then if its not the battery,what can i do to fix that?

[AbuS3ood]

guys the problem still exist, i have received more remotes and some of them has the same problem, each from different resource