oil pressure JEEP GRAND CHEROKEE 2006 WK / 3.G SRT Owners Manual

If the ABS light is on, the brake system should be serviced
as soon as possible to restore the benefits of Anti-Lock
brakes. If the ABS light does not turn on when the
Ignition switch is turned to the ON position, have the
light inspected by an authorized dealer.
8. Tachometer
The red segments indicate the maximum permissible
engine revolutions-per-minute (r.p.m. x 1000) for each
gear range. Before reaching the red area, ease up on the
accelerator.
9. Security Alarm System Indicator Light — If
Equipped
This light will flash rapidly for approximately 15 seconds
when the vehicle theft alarm is arming. The light will
flash at a slower speed continuously after the alarm is set.
The security light will also come on for about three
seconds when the ignition is first turned on.10. Oil Pressure Warning Light
This light shows low engine oil pressure. The light
should turn on momentarily when the engine is
started. If the light turns on while driving, stop the
vehicle, and shut off the engine as soon as possible. A
continuous chime will sound when this light turns on.
Do not operate the vehicle until the cause is corrected.
This light does not show how much oil is in the engine.
The engine oil level must be checked under the hood.
11. Electronic Stability Program (ESP) Indicator
Light/Traction Control System (TCS) Indicator Light
This indicator light starts to flash as soon as the
tires lose traction and the ESP system becomes
active. The “ESP/TCS Indicator Light” also
flashes when TCS is active. If the “ESP/TCS
Indicator Light” begins to flash during acceleration, ease
up on the accelerator and apply as little throttle as
possible. Be sure to adapt your speed and driving to the
178 UNDERSTANDING YOUR INSTRUMENT PANEL

13. Temperature Gauge
The temperature gauge shows engine coolant tempera-
ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.
The gauge pointer will likely indicate a higher tempera-
ture when driving in hot weather, up mountain grades,
or when towing a trailer. It should not be allowed to
exceed the upper limits of the normal operating range.CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If temperature gauge reads (H),
pull over and stop the vehicle. Idle the vehicle with
the air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the “H”, and you hear continuous chimes, turn the
engine off immediately, and call for service.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. If you decide to look under the hood your-
self, refer to Section 7 of this manual. Follow the
warnings under “Cooling System Pressure Cap.”
180 UNDERSTANDING YOUR INSTRUMENT PANEL

Reset Button
Press the RESET button to reset the display you are in.
Press and hold the RESET button (for 2 seconds) to reset
all of the displays.
Average Fuel Economy
Shows the average fuel economy since the last reset.
Distance To Empty
Shows the estimated distance that can be travelled with
the fuel remaining in the tank. This is calibrated using the
miles per gallon during the last driving period.
Trip A
Shows the total distance travelled for trip A since the last
reset.
Trip B
Shows the total distance travelled for trip B since the last
reset.
Elapsed Time
Shows the accumulated ignition ON time since the last
reset.
Engine Oil Pressure
Shows the current engine oil pressure. The scale will read
from 0–100 psi (0–689 kPa).Reset Button
UNDERSTANDING YOUR INSTRUMENT PANEL 193
4

Engine Oil Temperature
Shows the current engine oil temperature. The scale will
read from 140° – 300°F (60° – 149°C).
Tire Pressure Display
Shows the current pressure of all 4 road tires.NOTE:Tires heat up during normal driving conditions.
Heat will cause the tire pressure to increase from 2 to 6
psi (14 to 41 kPa) during normal driving conditions. Refer
to “Tire Inflation Pressures” in Section 5 for additional
information.
Miles to Service
Shows the distance remaining to require service.
NOTE:This display can be reset to the set service
interval by pressing and holding the RESET button for 3
seconds.
Blank Screen
Shows a blank screen. Pressing the C/T button returns to
the compass/temperature display.
Manual Compass Calibration
If the compass appears erratic and the “CAL” symbol
does not appear, you must manually put the compass
into the “Calibration” mode.
Tire Pressure Display
194 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!
All tires should be replaced after six years, regard-
less of the remaining tread. Failure to follow this
warning can result in sudden tire failure. You could
lose control and have an accident resulting in serious
injury.
Keep unmounted tires in a cool, dry place with as little
exposure to light as possible. Protect tires from contact
with oil, grease and gasoline.
Replacement Tires
The tires on your new vehicle provide a balance of many
characteristics. They should be inspected regularly for
wear and correct cold tire inflation pressure. The manu-
facturer strongly recommends that you use tires equiva-
lent to the originals in size, quality and performance
when replacement is needed (see the paragraph on tread
wear indicators). Refer to the Tire and Loading Informa-
tion placard for the size designation of your tire. The
service description and load identification will be found
on the original equipment tire. Failure to use equivalent
replacement tires may adversely affect the safety, han-
dling, and ride of your vehicle. We recommend that you
contact your original equipment or an authorized tire
dealer with any questions you may have on tire specifi-
cations or capability.
STARTING AND OPERATING 263
5

CAUTION!
Overfilling or underfilling will cause oil aeration or
loss of oil pressure. This could damage your engine.
CAUTION!
Operating the engine with the oil levels below the
safe zone, or operating with oil levels that exceed the
top of the safe zone may cause engine damage.
Change Engine Oil
Road conditions and your kind of driving affects the
interval at which your oil should be changed. Check the
following list to see if any apply to you.
•Day or night temperatures are below 32°F (0°C).
•Stop and go driving.
•Extensive engine idling.
•Driving in dusty conditions.
•Short trips of less than 10 miles (16 km).
•More than 50% of your driving is at sustained high
speeds during hot weather, above 90°F (32°C).
•Trailer towing.
NOTE:IfANYof these apply to you then change your
engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first. Refer to “Maintenance Schedule
B” in Section 8 of this manual.
If none of these apply to you, then change your engine oil
at every interval shown on “Maintenance ScheduleA.
Refer to Section 8 of this manual.
302 MAINTAINING YOUR VEHICLE

WARNING!
Riding the brakes can lead to brake failure and
possibly an accident. Driving with your foot resting
or riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You wouldn’t have your full
braking capacity in an emergency.
Brake And Power Steering Hoses
When the vehicle is serviced for scheduled maintenance,
inspect surface of hoses and nylon tubing for evidence of
heat and mechanical damage. Hard and brittle rubber,
cracking, tears, cuts, abrasion, and excessive swelling
indicate deterioration of the rubber. Particular attention
should be made to examining those hose surfaces nearest
to high heat sources, such as the exhaust manifold.Insure nylon tubing in these areas has not melted or
collapsed.
Inspect all hose connections such as clamps and cou-
plings to make sure they are secure and no leaks are
present.
NOTE:Often, fluid such as oil, power steering fluid,
and brake fluid are used during assembly plant opera-
tions to facilitate the assembly of hoses to couplings.
Therefore, oil wetness at the hose-coupling area is not
necessarily an indication of leakage. Actual dripping of
hot fluid when systems are under pressure (during
vehicle operation), should be noted before a hose is
replaced based on leakage.
NOTE:Inspection of brake hoses should be performed
whenever the brake system is serviced and at every
engine oil change. Inspect hydraulic brake hoses for
surface cracking, scuffing, or worn spots. If there is any
evidence of cracking, scuffing, or worn spots, the hose
320 MAINTAINING YOUR VEHICLE

WARNING!
•Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and the
brake fluid catching fire.
•Use of a brake fluid that has a lower initial boiling
point than the recommended MOPAR DOT 3
product or a brake fluid that is unidentified as to
FMVSS specification may result in sudden brake
failure during hard prolonged braking. You could
have an accident.
Use only brake fluid that has been in a tightly closed
container to avoid contamination from foreign matter or
moisture.
CAUTION!
Do not allow petroleum base fluid to contaminate
the brake fluid, all brake seal components could be
damaged causing partial or complete brake failure.
Fuel System Hoses
Electronic Fuel Injection high pressure fuel systems are
designed with hoses and quick connect fittings which
have unique material characteristics to provide adequate
sealing and resist attack by deteriorated gasoline.
You are urged to use only the manufacturer’s specified
hoses with quick connect fittings, or their equivalent in
material and specification, in any fuel system servicing. It
is mandatory to replace any damaged hoses or quick
connect fittings that have been removed during service.
322 MAINTAINING YOUR VEHICLE

Once a Month
•Check the tire pressure and look for unusual wear or
damage.
•Inspect the battery and clean and tighten the terminals
as required.
•Check the fluid levels of the coolant reservoir, brake
master cylinder, and add as needed.
•Check all lights and all other electrical items for correct
operation.At Each Oil Change
•Change the engine oil filter.
•Inspect the exhaust system.
•Inspect brake hoses.
•Check the engine coolant/anti-freeze level, hoses, and
clamps.
348 MAINTENANCE SCHEDULES
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Life of Tires............................ 262
Liftgate................................ 26
Liftgate Flipper Glass...................... 27
Liftgate Window Wiper/Washer............. 168
Lights..............................71,118
Airbag............................57,177
Alarm............................... 71
Anti-Lock........................... 177
Automatic Headlights................... 121
Back-Up............................. 339
Battery Saver......................... 120
Brake Assist Warning.................137,181
Brake Warning........................ 176
Bulb Replacement...................... 335
Cargo .............................. 163
Center Mounted Stop................... 340
Cruise.............................. 181
Daytime Running...................... 124
Dimmer Switch, Headlight.............120,125Electronic Stability Program (ESP)
Indicator........................137,178,181
Electronic Throttle Control Warning......... 182
Fog ..........................124,183,338
Fuses............................... 328
Hazard Warning Flasher................. 288
Headlight Switch...................... 121
Headlights........................... 335
Headlights On With Wipers............... 121
High Beam Indicator.................... 176
Illuminated Entry....................... 16
Instrument Cluster..................121,123
Interior........................... 118,123
Lights On Reminder.................... 124
Low Fuel............................ 183
LowTire ............................ 179
Malfunction Indicator (Check Engine)........ 176
Map Reading......................... 119
Oil Pressure.......................... 178
INDEX 381
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