I have a 2016 Genesis G80 3.8.

[colerjack]

I lost my key fob so I ordered two new fobs. After programming the first one works fine the second one worked for a few minuets then stop working altogether. Someone told me you can only have one key, does anyone know if this is true?

 

[joegr]

Actually, don't you have a 2016 Hyundai Genesis sedan?
Did you have both smart keys programmed to the car at the same time?
The car can have two smart keys and one "credit-card" key active at the same time.

 

[Sal Collaziano]

I lost my key fob so I ordered two new fobs. After programming the first one works fine the second one worked for a few minuets then stop working altogether. Someone told me you can only have one key, does anyone know if this is true?

Welcome. Moved to second generation Genesis Sedan section...