Sorry ti hear the keyfob stopped working as on this vehicle when this happens it could be due to the keyfob losing its code .
Now not like the older models you can not program this yourself without the diagnostic scan t6ool or key and fob programmer.
First try your spare if also does not work take all the key fobs you have as they will have to be done at the same time .
You can use a auto locksmith or the dealer .
First i would take the car to the dealer as they will sometimes do this free if you are there customer and bought the car from them .
If not use your local locksmith .
Here is a locating link to find one in your area if not sure where one is.
Please click here for link
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