Loose Fuel Filler Cap Message - Jeep WRANGLER 2020 Owner's Manual

Fuel Filler Cap
WARNING!
Never have any smoking materials lit in or

near the vehicle when the fuel door is open
or the tank is being filled.
Never add fuel when the engine is running.

This is in violation of most countries regula-
tions and may cause the Malfunction Indi-
cator Light to turn on.
Do not apply any object/cap to the end of

the filler which is not provided for the car.
The use of non-compliant objects/plugs
could cause a pressure increase inside the
tank, resulting in dangerous situations.
WARNING!
A fire may result if fuel is pumped into a

portable container that is inside of a
vehicle. You could be burned. Always place
fuel containers on the ground while filling.
CAUTION!
Damage to the fuel system or emission

control system could result from using an
improper fuel filler cap. A poorly fitting cap
could let impurities into the fuel system.
Also, a poorly fitting aftermarket cap can
cause the Malfunction Indicator Light (MIL)
to illuminate, due to fuel vapors escaping
from the system.
To avoid fuel spillage and overfilling, do not

"top off" the fuel tank after filling.
(Continued)
STARTING AND OPERATING
NOTE:
When the fuel nozzle "clicks" or shuts off, the

fuel tank is full.
Tighten the fuel filler cap about a quarter turn

until you hear one click. This is an indication
that the cap is properly tightened.
If the fuel filler cap is not tightened properly,

the MIL will come on. Be sure the cap is tight-
ened every time the vehicle is refueled.
L F F C M
OOSE UEL ILLER AP ESSAGE
After fuel has been added, the vehicle
diagnostic system can determine if the fuel
filler cap is possibly loose, improperly installed,
or damaged. If the system detects a
malfunction, the "gASCAP" message will
display in the odometer display. Tighten the
gas cap until a "clicking" sound is heard. This is
an indication that the gas cap is properly
tightened. Push the odometer reset button to
turn the message off. If the problem persists,
the message will appear the next time the
vehicle is started. This might indicate a
damaged cap. If the problem is detected twice
in a row, the system will turn on the MIL.
Resolving the problem will turn the MIL off.
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