The 2001 Lincoln LS fuel pump relay isn't located in a single, easily accessible fuse box like some vehicles. Instead, it's integrated into the Powertrain Control Module (PCM).
There is no separate fuel pump relay to replace. If you're experiencing fuel pump issues, the problem likely lies within the PCM itself, the wiring harness, the fuel pump's inertia switch (which is under the rear passenger seat), the fuel pump itself, or a related sensor.
To diagnose the issue, you'll need to use a scan tool to check for any diagnostic trouble codes (DTCs) related to the fuel system. A mechanic with access to diagnostic equipment is best equipped to pinpoint the problem. Attempting to bypass or replace something you believe to be the relay, when it's actually integrated within a larger module, is not recommended and could cause further damage.
