if u can move the grill out the way without damaging it then yes u can!! U can get in thru the door without damaging it too but not gonna post on here how to....

Also an easier way, if u can jack the car up in the air mate and u have jump leads and another car, u can get to the positive wire that goes onto the starter motor, just connect the posi jump lead there and to another car batt and put the earth onto any good earth point on the car and it'll give u power to work the fob!!