radiator cap JEEP COMMANDER 2007 1.G Owners Manual

Exhaust System
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
If you notice a change in the sound of the exhaust system;
or if the exhaust fumes can be detected inside the vehicle;
or when the underside or rear of the vehicle is damaged;
have an authorized technician inspect the complete ex-
haust system and adjacent body areas for broken, dam-
aged, deteriorated, or mispositioned parts. Open seams
or loose connections could permit exhaust fumes to seep
into the passenger compartment. In addition, inspect the
exhaust system each time the vehicle is raised for lubri-
cation or oil change. Replace as required.
Cooling System
WARNING!
You or others can be badly burned by hot antifreeze/
coolant or steam from your radiator. If you see or
hear steam coming from under the hood, don’t open
the hood until the radiator has had time to cool.
Never try to open a cooling system pressure cap
when the radiator or coolant bottle is hot.
Engine Coolant Checks
Check antifreeze/coolant protection every 12 months
(before the onset of freezing weather, where applicable).
If antifreeze/coolant is dirty or rusty in appearance, the
system should be drained, flushed and refilled with fresh
antifreeze/coolant. Check the front of the A/C condenser
for any accumulation of bugs, leaves, etc. If dirty, clean by
gently spraying water from a garden hose vertically
down the face of the condenser.
MAINTAINING YOUR VEHICLE 375
7

Check the engine cooling system hoses for brittle rubber,
cracking, tears, cuts, and tightness of the connection at
the coolant recovery bottle and radiator. Inspect the
entire system for leaks.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
coolant from the radiator drain cock. If the cap is sealing
properly, the antifreeze/coolant will begin to drain from
the coolant recovery bottle. DO NOT REMOVE THE
COOLANT PRESSURE CAP WHEN THE COOLING
SYSTEM IS HOT.Cooling System — Drain, Flush, And Refill
At the intervals shown in the appropriate “Maintenance
Schedule,” the system should be drained, flushed, and
refilled.
If the solution is dirty and contains a considerable
amount of sediment, clean and flush with reliable cooling
system cleaner. Follow with a thorough rinsing to remove
all deposits and chemicals. Properly dispose of old
antifreeze/coolant solution.
Selection Of Coolant
Use only the manufacturer’s recommended antifreeze/
coolant, refer to Fluids, Lubricants, and Genuine Parts for
correct antifreeze/coolant type.
376 MAINTAINING YOUR VEHICLE

Use only high purity water such as distilled or deionized
water when mixing the water/antifreeze (coolant) solu-
tion. The use of lower quality water will reduce the
amount of corrosion protection in the engine cooling
system.
Please note that it is the owner’s responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing antifreeze/coolant types will decrease
the life of the antifreeze/coolant and will require more
frequent antifreeze/coolant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
antifreeze/coolant, and to insure that antifreeze/coolant
will return to the radiator from the coolant recovery tank.The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
•The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precau-
tion. Never add antifreeze/coolant when the en-
gine is overheated. Do not loosen or remove the
cap to cool an overheated engine. Heat causes
pressure to build up in the cooling system. To
prevent scalding or injury, do not remove the
pressure cap while the system is hot or under
pressure.
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or
engine damage may result.
378 MAINTAINING YOUR VEHICLE

Disposal of Used Engine Coolant
Used ethylene glycol-based antifreeze/coolant is a regu-
lated substance requiring proper disposal. Check with
your local authorities to determine the disposal rules for
your community. To prevent ingestion by animals and
children, do not store ethylene glycol-based antifreeze/
coolant in open containers or allow it to remain in
puddles on the ground. If ingested by a child, contact a
physician immediately. Clean up any ground spills im-
mediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the antifreeze/coolant level is adequate.
With the engine idling, and warm to normal operating
temperature, the level of the antifreeze/coolant in the
bottle should be between the ranges indicated on the
bottle.The radiator normally remains completely full, so there is
not need to remove the radiator cap unless checking for
antifreeze/coolant freeze point or replacing antifreeze/
coolant. Advise your service attendant of this. As long as
the engine operating temperature is satisfactory, the
coolant bottle need only be checked once a month.
When additional antifreeze/coolant is needed to main-
tain the proper level, it should be added to the coolant
bottle. Do not overfill.
Points To Remember
NOTE:When the vehicle is stopped after a few miles
(kilometers) of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot antifreeze/
coolant to enter the radiator.
MAINTAINING YOUR VEHICLE 379
7

Special Additives...................... 387
Torque Converter...................... 262
Autostick............................. 258
Auxiliary Electrical Outlet (Power Outlet)...... 162
Auxiliary Power Outlet................... 162
Battery............................... 369
Emergency Starting..................... 348
Keyless Transmitter Replacement (RKE)....... 24
Saving Feature (Protection)............... 120
Belts, Drive............................ 365
Belts, Seat.............................. 38
Body Mechanism Lubrication............... 373
B-Pillar Location........................ 284
Brake Assist System...................... 136
Brake Control System, Electronic............. 135
Brake System........................... 381
Anti-Lock (ABS)....................135,275
Hoses.............................. 382Master Cylinder....................... 382
Parking............................. 274
Warning Light........................ 176
Brake/Transmission Interlock............... 256
Break-In Recommendations, New Vehicle........ 67
Bulb Replacement....................... 401
Camera, Rear........................... 149
Capacities, Fluid........................ 402
Caps, Filler
Fuel................................ 314
Radiator (Coolant Pressure)............... 378
Car Washes............................ 389
Carbon Monoxide Warning............68,152,310
Cargo Area Features...................... 165
Cargo Compartment...................... 165
Luggage Carrier....................... 168
Cargo Load Floor........................ 165
Catalytic Converter...................... 367
INDEX 439
10

Caution, Exhaust Gas..................... 152
CD (Compact Disc) Player...............199,213
Cellular Phone.......................... 80
Certification Label....................... 317
Chains, Tire............................ 295
Changing A Flat Tire..................... 342
Chart, Tire Sizing........................ 281
Checks, Safety.........................69,70
Child Restraint......................57,63,65
Child Restraint Tether Anchors.............61,63
Child Safety Locks........................ 28
Climate Control......................... 233
Clock...........................201,215,221
Command View Skylights.................. 161
Compact Disc (CD) Maintenance............. 232
Compass.............................. 191
Compass Variance....................... 196
Computer, Trip/Travel.................... 191
Console, Overhead....................... 151Contract, Service........................ 432
Converter, Catalytic...................... 367
Cooling System......................... 375
Adding Coolant (Antifreeze).............. 377
Coolant Capacity...................... 402
Coolant Level......................... 379
Disposal of Used Coolant................ 379
Drain, Flush, and Refill.................. 376
Inspection........................375,379
Points to Remember.................... 379
Pressure Cap......................... 378
Radiator Cap......................... 378
Selection of Coolant (Antifreeze).........376,402
Courtesy Lights......................... 125
Crankcase Emission Control System.......... 369
Cruise Control (Speed Control).............. 132
Cruise Light........................... 182
Cup Holder............................ 163
Customer Assistance..................... 430
440 INDEX