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In the 2003 Lincoln Aviator, the starter is located on the passenger side of the engine in front of the bell housing. To replace it, you will need a 13mm end wrench and a deep socket for the mounting bolts. Here's a simple guide for replacing it: start by disconnecting the negative battery cable, then remove the access shielding to reveal the starter terminals on the solenoid. Once exposed, disconnect the battery cable and trigger wire, noting their original positions. Next, disconnect the positive battery cable. Remove the 3 bolts securing the starter in place - be cautious as the starter will be free from the bell housing. Once removed, verify the part number for a replacement or confirm the correct part you have purchased, and then install it by reversing the removal procedure.
In the 2003 Lincoln Aviator, the ignition starter can be found inside the steering column and is linked to the place where you insert the keys.