What you should know about fail-safe cooling
(4.6L V8 engine only)
If the engine coolant supply is depleted, this feature allows the vehicle to
be driven temporarily before incremental component damage is incurred.
The“fail-safe”distance depends on ambient temperatures, vehicle load
and terrain.
How fail-safe cooling works
If the engine begins to overheat:
•The engine coolant temperature
gauge will move to the red (hot)
area.
•The
and thesymbol
will illuminate.
•The“Service Engine Soon”
indicator light will illuminate.
If the engine reaches a preset over-temperature condition, the engine
will automatically switch to alternating cylinder operation. Each disabled
cylinder acts as an air pump and cools the engine.
When this occurs the vehicle will still operate. However:
•The engine power will be limited.
•The air conditioning system will be disabled.
Continued operation will increase the engine temperature:
•The engine will completely shut down.
•Steering and braking effort will increase.
Once the engine temperature cools, the engine can be re-started. Take
your vehicle to a service facility as soon as possible to minimize engine
damage.
When fail-safe mode is activated
You have limited engine power when in the fail-safe mode, so drive the
vehicle with caution. The vehicle will not be able to maintain high speed
operation and the engine will run rough. Remember that the engine is
capable of completely shutting down automatically to prevent engine
damage, therefore:
1. Pull off the road as soon as safely possible and turn off the engine.
2. Arrange for the vehicle to be taken to a service facility.
Maintenance and Specifications
234
Engine oil ..................................221
checking and adding ..............221
dipstick ....................................221
filter, specifications ........225, 254
recommendations ...................225
refill capacities ........................254
specifications ..................257, 259
Exhaust fumes ..........................137
F
Fail safe cooling ........................234
Flexible Fuel Vehicle (FFV) ....235
Floor mats ...................................73
Fluid capacities .........................254
Foglamps .....................................33
Four-Wheel Drive vehicles .......149
driving off road ...............151, 159
indicator light .........................150
preparing to drive your
vehicle .....................................142
Fuel ............................................235
calculating fuel
economy ............................64, 241
cap ...........................................240
capacity ...................................254
choosing the right fuel ...........238
comparisons with EPA fuel
economy estimates .................244
detergent in fuel .....................240
filling your vehicle
with fuel ..................235, 240–241
filter, specifications ........241, 254
fuel pump shut-off switch .....177
improving fuel economy ........241
octane rating ...................238, 259
quality ......................................239
running out of fuel .................240
safety information relating to
automotive fuels .....................235Fuel - flex fuel vehicle
(FFV) .................................235, 238
Fuses ..................................178, 180
G
Garage door opener ..............46, 56
Gas cap (see Fuel cap) ............240
Gas mileage
(see Fuel economy) .................241
Gauges .........................................14
GAWR (Gross Axle Weight
Rating) .......................................167
calculating ...............................169
definition .................................167
driving with a heavy load ......167
location ....................................167
GVWR (Gross Vehicle Weight
Rating) .......................................167
calculating .......................167, 169
definition .................................167
driving with a heavy load ......167
location ....................................167
H
Head restraints ...........................91
Headlamps
aiming ........................................35
bulb specifications ....................38
daytime running lights .............33
flash to pass ..............................34
high beam .................................34
Heating
heating and air
conditioning system ...........27–28
HomeLink universal
transceiver (see Garage
door opener) .........................56, 59
Index
269
