Loose Fuel Filler Cap Message; VEHICLE LOADING; Certification Label- Page 306

2018 Jeep Wrangler JK Owner Manual

Table of Contents

GETTING TO KNOW YOUR VEHICLE
GETTING TO KNOW YOUR INSTRUMENT PANEL
SAFETY
OCCUPANT RESTRAINT SYSTEMS
STARTING AND OPERATING
SERVICING AND MAINTENANCE
MULTIMEDIA
UCONNECT PHONE — IF EQUIPPED
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CAUTION!

Damage to the fuel system or emission control sys-
tem 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.

NOTE:

When the fuel nozzle “clicks” or shuts off, the fuel tank

is full.

Tighten the fuel filler cap about 1/4 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 tightened every time the

vehicle is refueled.

Loose Fuel Filler Cap Message

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.

VEHICLE LOADING

Certification Label

As required by National Highway Traffic Safety Adminis-

tration regulations, your vehicle has a certification label

affixed to the driver’s side door or pillar.
This label contains the month and year of manufacture,

Gross Vehicle Weight Rating (GVWR), Gross Axle Weight

Rating (GAWR) front and rear, and Vehicle Identification

Number (VIN). A Month-Day-Hour (MDH) number is

304

STARTING AND OPERATING

Detailed Information for 2018 Jeep Wrangler JK Owner Manual

Lists of information found in 2018 Jeep Wrangler JK Owner Manual - Page 306

  • Damage to the fuel system or emission control sys- tem could result from using an improper fuel filler cap.
  • To avoid fuel spillage and overfilling, do not “top off” the fuel tank after filling.
  • When the fuel nozzle “clicks” or shuts off, the fuel tank is full.
  • Tighten the fuel filler cap about 1/4 turn until you hear one click.
  • If the fuel filler cap is not tightened properly, the MIL will come on.

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