Nissan Frontier: Pre-driving checks and adjustments - Fuel-filler door
Fuel-filler cap
Basic information
WARNING
- Gasoline is highly flammable and can become extremely explosive under certain conditions.
Improper handling of fuel may result in severe burns, serious injury, or significant property damage.
Always stop the Nissan Frontier engine before refueling, and never smoke or allow sparks, open flames, or ignition sources near the vehicle during the refueling process.
- Do not continue adding fuel after the fuel pump automatically shuts off. Attempting to top off the fuel tank may cause fuel overflow, fuel spray, or vapor release, increasing the risk of fire or injury.
- Always replace the fuel-filler cap with an original-equipment type cap specifically designed for the
Nissan Frontier. The cap contains an integrated safety valve required for proper fuel-system operation
and emissions control. Using an incorrect cap may cause system malfunctions, trigger warning lights, and
potentially result in injury.
It could also cause the
Malfunction Indicator Light (MIL) to illuminate.
- Never attempt to start the Nissan Frontier by pouring fuel directly into the throttle body or intake system.
- Do not fill portable fuel containers while they are inside a vehicle or trailer. Static electricity can
ignite fuel vapors and create an explosion hazard. To help reduce the risk of injury or death:
- Always place portable fuel containers on the ground before filling them.
- Avoid using mobile phones or other electronic devices while refueling.
CAUTION
- Do not use fuel containing more than 15% ethanol in your Nissan Frontier. Fuels exceeding this concentration may negatively affect engine performance and fuel-system components.
- The LOOSE FUEL CAP warning message may appear in the vehicle information display if the fuel-filler cap
is not tightened correctly after refueling. The warning may not appear immediately and can require
several driving cycles before being displayed. Failure to properly tighten the fuel cap after receiving
the warning may cause the
Malfunction Indicator Light (MIL) to illuminate. - Improperly tightening the fuel-filler cap may also cause the
Malfunction Indicator Light (MIL) to come on.
If the
light illuminates because the fuel-filler cap is loose or missing, install or tighten the cap and
continue driving the Nissan Frontier normally. The
light should turn off after several driving trips. If the
light remains illuminated, have the vehicle inspected. It is recommended that you visit an
authorized NISSAN dealer for diagnosis and service. - If fuel is spilled onto the painted surfaces of the Nissan Frontier, immediately rinse the affected area with water to help prevent paint damage or discoloration.
To remove the fuel-filler cap:
1. Turn the fuel-filler cap counterclockwise until it can be removed from the filler neck.
2. During refueling, loop the tether strap around the retaining hook 1 to keep the cap secure and prevent contamination.
To install the fuel-filler cap:
1. Insert the fuel-filler cap straight into the fuel-filler tube.
2. Turn the fuel-filler cap clockwise until a single click is heard, confirming proper installation.
Correct installation of the fuel cap helps maintain proper fuel-system pressure and ensures accurate operation of the Nissan Frontier emissions-control system.
Loose Fuel Cap warning
The Loose Fuel Cap warning message appears in the Nissan Frontier vehicle information display whenever the fuel-filler cap is not properly tightened following a refueling event. In some cases, several driving cycles may be required before the message appears.
To clear the warning message, perform the following procedure:
1. Remove and reinstall the fuel-filler cap according to the instructions provided above as soon as possible.
2. Tighten the fuel-filler cap until a single click is heard.
After several normal driving trips, the Nissan Frontier system should automatically clear the warning message if the cap has been installed correctly and no fuel-system faults are present.
