Put yourself in front of your trunk, and check around the handle of the trunk, you should find a small trap door behind which hides the mechanical lock in which you will have the ability to insert and turn your key. Once this is done, you will have the ability to open the trunk of your Ford Mustang with a dead battery and access the interior of To open the door of your Chevrolet Cruze that has no more battery, you will have to turn the key in the lock and simultaneously try to pull the door handle . Repeat this procedure if it doesn’t work on the first door on the second one, if it still doesn’t work, go to the next step of this content. Maybe the car battery is dead & its in double deadlock mode.but should still unlock single door .try getting in thru boot & open doors manually. Atleast you will know if in double deadlock mode or not. Open bonnet & see if battery is dead or not. Charge it up if so. These are just himts . Hope u get it sorted mate. Yunii If you close the trunk manually and then disconnect the battery for a short period of time that the system (computer) will reset itself and the system will work. This is only a quick fix though as the first couple of times I did this the reset worked for quite a while but now it only works a couple of times and goes dead again. SgZeNC.

how to open ford focus trunk with dead battery