In most Nissan models there isn’t a universal manual reset switch for the fuel pump. If the pump has tripped, you may restore power by cycling the ignition or by resetting an inertia (fuel-cut) switch if your model is equipped with one. Start by checking related fuses and the fuel-pump relay, and consult your owner's manual for model-specific instructions.
What to know before you reset
Resetting a fuel pump is not a substitute for diagnosing the underlying problem. The steps below cover common, safe first moves to restore fuel delivery or identify faults. If the vehicle still won’t start after these steps, seek professional service.
Option A: Reset the inertia switch (if your Nissan has one)
If your model includes an inertia switch, use these steps to reset it. The switch is designed to cut power to the fuel pump after a collision or during a fault condition; resetting it can restore power when safe.
- Find the inertia switch location (it varies by model; consult your owner’s manual or a dealer). Look for a small round or rectangular button or switch labeled "FUEL" or similar, typically in the trunk area or under a dash panel.
- With the ignition off, press and hold the reset button or switch for a few seconds until you hear a click or feel it reset.
- Return the switch to its normal position and attempt to start the engine or turn the key to the Run position to see if the pump primes.
Note: If the switch does not reset, or the warning light remains illuminated, avoid driving and have the vehicle inspected. After a collision or suspected impact, there could be other damage that requires professional attention.
Option B: Cycle the ignition to prime the fuel pump
Cycling the ignition can help re-prime the fuel system and build correct pressure. This is a common first step when starting a Nissan after refueling or a battery disconnect.
- Insert the key and turn to the ON or RUN position without cranking the engine.
- Wait about 2–3 seconds, then turn the ignition OFF.
- Repeat the ON-OFF cycle 3–5 times to prime the fuel lines and pressurize the rail.
- Try starting the engine. If it doesn’t start after several cycles, proceed to other checks or seek professional help.
Use this method only when the fuel system is not completely pressurized or when there are no leaks. If you smell gasoline or suspect a leak, stop and contact a technician.
Option C: Check fuses and the fuel-pump relay
A blown fuse or a faulty relay is a common reason the pump won’t run. This quick check can identify simple electrical faults without specialized tools.
- Open the fuse box (engine bay or cabin) and locate the fuse labeled for the fuel pump. If the fuse is blown, replace it with one of the same rating.
- Locate the fuel-pump relay. If there is a clicking sound when you turn the key, the relay may be functioning; if not, replace the relay according to the owner’s manual.
- After replacing fuses/relays, try starting the car again. If the pump still does not run, there may be a sensor or wiring fault or a failed pump requiring diagnosis.
Note: Always disconnect the battery before handling electrical components to avoid sparks. If you’re uncomfortable with electrical work, have a qualified technician perform the checks.
Safety and limitations
Gasoline is flammable and fumes are hazardous. Work in a well-ventilated area, away from ignition sources, and wear protective gloves if handling fuel lines. Do not attempt to drive if you smell gasoline or see leaks. This guide is for diagnostic purposes and does not replace professional service.
When to seek professional help
If the engine still fails to start after trying these steps, or if you’re unsure about the procedure for your specific Nissan model, contact a Nissan dealer or qualified mechanic. Some models require dealer-specific reset procedures or tool-based diagnostics.
Summary
There is no universal “manual reset” for the Nissan fuel pump across all models. Start with safety and basic electrical checks (fuses and relays), then consider an inertia-switch reset if equipped, and finally cycle the ignition to prime the fuel system. If the problem persists, professional diagnosis is recommended to avoid fuel-system damage or safety risks.