Four Wheel Logic

Changing a tail light means matching the right bulb, accessing the housing, swapping it, and testing the light before you drive away.

To change a serpentine belt, release the tensioner, swap the belt using the routing diagram, then restore tension and check alignment.

To change a car headlight, open the hood, reach the bulb holder, unplug the connector, fit a matching bulb, and test the lights.

To change a car fuse, cut power, match the blown fuse rating, pull it out, and press in an identical replacement.

To change a fuel pump, relieve fuel pressure, access the pump, swap it with a new unit, then reassemble the system and check for leaks.

To change a fuel injector you relieve fuel pressure, remove the fuel rail, swap the injector, then reassemble and check for leaks.

To change a fuel filter, release system pressure, swap the filter in the same flow direction, then check every connection for leaks.

To change a flat tire, secure the car, loosen the lug nuts, lift with a jack, swap in the spare, tighten in a star pattern, and lower the vehicle.

To change a car battery, work safely, disconnect negative first, swap units, then reconnect positive and negative and test the vehicle.

To change a camshaft position sensor, disconnect the battery, remove the old sensor, install a matching new sensor, then clear the fault code with a scanner.