Ditto...you can either do the manual unlock procedure outlined in the owners manual for the tail gate & lift gate...or connect a battery charger or jumper cables (using a donor vehicle) to the terminals in the engine bay. This should provide enough power to either use the tailgate release button on the lower dash or your remote fob trunk release button. And just in case you're not familiar with them...see the info below (also from the owners manual).
I recommend using the
"special nut" located on the left fender for
negative ground because you actually want this to work...using something else may not be truly grounded thus powering the tailgate won't work with power only to the B+ engine bay terminal.
{upper lift gate manual procedure...same as above}
{lower tailgate manual procedure with the 2ne & 3rd steps listed
}
