2007 DODGE GRAND CARAVAN fuel cap

21. Malfunction Indicator Light
This light is part of an onboard diagnostic system
called OBD that monitors engine and automatic
transmission control systems. The light will illu-
minate when the key is in the ON position before engine
start. If the bulb does not come when turning the key
from OFF to ON, have the condition checked promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations the vehicle will drive normally and will
not require towing.
The Malfunction Indicator Light flashes to alert to serious
conditions that could lead to immediate loss of power or
severe catalytic converter damage. The vehicle should be
serviced as soon as possible if this occurs. 22. Trac Off Indicator — If Equipped
This display indicator should illuminate for approxi-
mately four seconds as a bulb check when the ignition
switch is first turned ON.
The “TRAC OFF” Indicator will flash if the traction
control is in use.
The “TRAC OFF” Indicator will illuminate if:
• The Traction Control switch has been used to turn
the system OFF.
• There is a Traction Control System malfunction
• The system has been deactivated to prevent damage
to the brake system due to overheated brake tem-
peratures.
NOTE: Extended heavy use of Traction Control may
cause the system to deactivate and turn on the TRAC and
the OFF indicators located in the instrument cluster.218 UNDERSTANDING YOUR INSTRUMENT PANEL

This is to prevent overheating of the brake system and is
a normal condition. The system will remain disabled for
about 4 minutes until the brakes have cooled. The system
will automatically reactivate and turn off the TRAC and
the OFF indicators.
If your vehicle becomes stuck in mud, ice, or snow, turn
the Traction Control System OFF before attempting to
“rock” the vehicle free.
23. Odometer/Trip Odometer
The odometer shows the total distance the vehicle has
been driven.
U.S. federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. There-
fore, if the odometer reading is changed during repair or
replacement, be sure to keep a record of the reading
before and after the service so that the correct mileage can
be determined. The trip odometer shows individual trip mileage. To
switch from odometer to trip odometer, press the Trip
Odometer button.
Loose Fuel Filler Cap
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged,
GASCAP will be displayed in the instrument cluster
odometer. Tighten the fuel filler cap properly and press
the odometer reset button to turn the GASCAP message
off. If the problem continues, the message will appear the
next time the vehicle is started. See Section 7 of this
manual for more information.
24. Cruise Indicator
This display indicator shows that the Speed Control
System is ON. UNDERSTANDING YOUR INSTRUMENT PANEL 219
4

 Tire Pressure Monitoring Low Pressure
Warnings ...........................349
 Base Tire Pressure Monitoring System With
Electronic Vehicle Information Center (EVIC) — If
Equipped ...........................349
 Service Tire System Soon ................351
 Using Your Compact Spare — Basic Tire Pressure
Monitoring System Only ................352
 General Information ...................353

Fuel Requirements ......................353
 Reformulated Gasoline .................354
 Gasoline/Oxygenate Blends ..............354
 MMT In Gasoline .....................355
 Materials Added To Fuel ................355  Fuel System Cautions ..................356
 Carbon Monoxide Warnings ..............356

Adding Fuel ..........................357
 Fuel Filler Cap (Gas Cap) ...............357
 Loose Fuel Filler Cap Message ............359

Flexible Fuel — Fleet Vehicles Only ..........360
 E-85 General Information ................360
 Ethanol Fuel (E-85) ....................361
 Fuel Requirements ....................361
 Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) And Gasoline Vehicles .............362
 Starting ............................362
 Cruising Range .......................363 STARTING AND OPERATING 309
5

NOTE: The driver’s side sliding door cannot be opened
while the fuel door is open. This feature operates only
when the sliding door is fully closed prior to opening the
fuel door.
As a reminder, a fuel icon with an arrow “
”
indicating which side of the vehicle the fuel filler
door is located on, is located in the instrument
cluster, just below the Fuel Gage.
The fuel tank filler tube has a restricting door about 2
inches (50 mm) inside the opening. If using a portable
fuel container, it should have a flexible nozzle long
enough to force open the restricting door. CAUTION!Damage to the fuel system or emission control
system could result from using an improper fuel
tank filler tube cap (gas cap). A poorly fitting cap
could let impurities into the fuel system and may
cause the Malfunction Indicator Light (MIL) to turn
on due to fuel vapors escaping from the system.
CAUTION!To avoid fuel spillage and overfilling, do not “top
off” the fuel tank after filling.358 STARTING AND OPERATING

ETHANOL FUEL (E-85)
E-85 is a mixture of approximately 85% fuel ethanol and
15% unleaded gasoline.
WARNING!Ethanol vapors are extremely flammable and could
cause serious personal injury. Never have any smok-
ing materials lit in or near the vehicle when remov-
ing the fuel filler tube cap (gas cap) or filling the
tank. Do not use E-85 as a cleaning agent and never
use it near an open flame.
Fuel Requirements
Your vehicle will operate on both unleaded gasoline with
an octane rating of 87, or E-85 fuel, or any mixture of
these two.E-85 Badge STARTING AND OPERATING 361
5

Tire Size
The tire size on the Label represents the actual tire size on
your vehicle. Replacement tires must be equal to the load
capacity of this tire size.
Rim Size
This is the rim size that is appropriate for the tire size
listed.
Inflation Pressure
This is the cold tire inflation pressure for your vehicle for
all loading conditions up to full GAWR.
Curb Weight
The curb weight of a vehicle is defined as the total weight
of the vehicle with all fluids, including vehicle fuel, at full
capacity conditions, and with no occupants or cargo
loaded into the vehicle. The front and rear curb weight
values are determined by weighing your vehicle on a
commercial scale before any occupants or cargo are
added. Overloading
The load carrying components (axle, springs, tires,
wheels, etc.) of your vehicle will provide satisfactory
service as long as you do not exceed the GVWR and front
and rear GAWR.
The best way to figure out the total weight of your
vehicle is to weigh it when it is fully loaded and ready for
operation. Weigh it on a commercial scale to insure that it
is not over the GVWR.
Figure out the weight on the front and rear of the vehicle
separately. It is important that you distribute the load
evenly over the front and rear axles.
Overloading can cause potential safety hazards and
shorten useful service life. Heavier axles or suspension
components do not necessarily increase the vehicle’s
GVWR. STARTING AND OPERATING 365
5

MAINTAINING YOUR VEHICLECONTENTS
2.4L Engine ...........................414

3.3L/3.8L Engines ......................415

Onboard Diagnostic System — OBD II ........416
▫ Loose Fuel Filler Cap Message ............416

Emissions Inspection And Maintenance
Programs ............................417

Replacement Parts ......................418

Dealer Service .........................419

Maintenance Procedures ..................419 ▫ Engine Oil ..........................420
▫ Engine Oil Filter ......................423
▫ Drive Belts — Check Condition And Tension . . 423
▫ Spark Plugs .........................424
▫ Engine Air Cleaner Filter ................424
▫ Catalytic Converter ....................425
▫ Maintenance-Free Battery ................427
▫ Air Conditioner Maintenance .............428
▫ Power Steering — Fluid Check ............430
7

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light.” It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your dealer for service as soon as
possible. CAUTION!• Prolonged driving with the “Malfunction Indica-
tor Light” on could cause further damage to the
emission control system. It could also affect fuel
economy and driveability. The vehicle must be
serviced before any emissions tests can be per-
formed.
• If the “Malfunction Indicator Light” is flashing
while the engine is running, severe catalytic con-
verter damage and power loss will soon occur.
Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is loose, improperly
installed, or damaged. A loose fuel filler cap message will
be displayed in the instrument cluster. Tighten the gas416 MAINTAINING YOUR VEHICLE