Torx T 40 socket
9mm
With a spark plug socket and socket wrenches and extensions.
Check fuses If you are getting power to socket, but not through it ,replace socket
A spark plug socket.
With the correct sized socket, obviously.
A screwdriver and a 10mm socket wrench.
7mm, you might need a socket extension to get the head of a ratchet past the brake line.
Just unscrew the rear brake light, turn out the socket, and replace the bulb.
Ford dealers have these.
For the calipers on a 2007 Mercury Mariner, you typically need a 7mm hex socket to remove the caliper bolts. However, it's always a good idea to double-check your specific vehicle's manual or consult a repair guide, as variations may exist depending on the brake system used.
Unplug the sensor and unscrew it from the exhaust pipe. You'll probably need a special socket to do it without damaging the wires.
Remove the screw from the lamp(under the hood). disengage the assembly (it has snaps on the bottom) by pulling straight out. Turn bulb socket 1/4 turn to remove.