Keyless hatch
 

I have a 2006 cooper s. Today I went to open my trunk by using the unlock feature on the key and the car unlocked but the hatch didn't. Can anyone help?

The 06 would have a seperate button (other then the unlock) to open the hatch ... (opposite the unlock )

yes it does but that doesnt work either

Do the taillights flash when hitting the hatch button ???

Yes the taillights flash when hitting the hatch button.

Then you are getting signal , next I'd check the switch on the rear handle ... there are two torx screws that hold the handle on remove them and carefully move the handle, there is a plug with two wires be sure it's plugged in ...Check that , if they are plugged in you can try jumpering the two and see if it pops

Another FYI there is a manual release under the rear seat