The most common way to do this is to use jumper cables connected to a screwdriver.
Flat battery door locked.
Insert the key into the door lock and turn towards the back of the car to unlock your ford.
Insert the metal key into the hole in the bottom of the driver s door handle.
Now you can poke the screwdriver onto the solenoid power bolt.
Now we will open the hood with a screwdriver tested on bmw e34 the length of the screwdriver should be no less than indicated in the picture.
With the other end connect the black wire to a ground source and connect the red wire to the metal rod of the screwdriver.
Right now after months of being parked each car has a flat battery.
If the lock had been locked on you may need to lift up and pull the door handle when turning the key so as to tighten the key in the lock.
Battery died on a 2017 volvo xc90 and the door couldn t be opened by the remote and since there is no regular key it had to be opened with spare key that is.
Connect one end of the cables to the battery in a running vehicle.
Once you slide over the cover you will be able to see the key hole.
If you are ever locked out of your mercedes because of a dead fob battery or dead car battery this video will show you how to open your locked mercedes vehicle.