2005 CADILLAC SRX engine overheat

If you no longer have the overheat warning, you can
drive. Just to be safe, drive slower for about 10 minutes.
If the warning does not come back on, you can drive
normally.
If the warning continues and you have not stopped, pull
over, stop, and park your vehicle right away.
If there is still no sign of steam, you can idle the engine
for three minutes while you are parked. If you still
have the warning,turn off the engine and get everyone
out of the vehicleuntil it cools down.
You may decide not to lift the hood but to get service
help right away.Overheated Engine Protection
Operating Mode
This operating mode allows your vehicle to be driven to
a safe place in an emergency. Should an overheated
engine condition exist, an overheat protection mode
which alternates ring groups of cylinders helps prevent
engine damage. In this mode, you will notice a loss
in power and engine performance. A low coolant and/or
engine overheat warning will indicate that an overheat
condition exists. Driving extended miles (km) and/or
towing a trailer in the overheat protection mode should
be avoided.
Notice:After driving in the overheated engine
protection operating mode, to avoid engine damage,
allow the engine to cool before attempting any
repair. The engine oil will be severely degraded.
Repair the cause of coolant loss and change the oil.
SeeEngine Oil on page 5-16.
5-28

When the engine is cold, the coolant level should be at
or slightly above the FULL COLD/FROID line on the
side of the coolant surge tank. If it is not, you may have
a leak at the pressure cap or in the radiator hoses,
heater hoses, radiator, water pump or somewhere else
in the cooling system.
{CAUTION:
Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them. If
you do, you can be burned.
Do not run the engine if there is a leak. If you
run the engine, it could lose all coolant. That
could cause an engine re, and you could be
burned. Get any leak xed before you drive the
vehicle.
If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they are not, your vehicle needs service.Notice:Engine damage from running your engine
without coolant is not covered by your warranty. See
Overheated Engine Protection Operating Mode on
page 5-28for information on driving to a safe place
in an emergency.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-30

How to Add Coolant to the Coolant
Surge Tank
If you have not found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level is not at the FULL COLD/FROID
line on the side of the coolant surge tank, add a
50/50 mixture ofclean, drinkable waterand DEX-COOL
®
coolant at the coolant surge tank, but be sure the
cooling system, including the coolant surge tank
pressure cap, is cool before you do it. SeeEngine
Coolant on page 5-23for more information.
{CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge tank pressure cap — even a little — they
can come out at high speed. Never turn the
cap when the cooling system, including the
coolant surge tank pressure cap, is hot. Wait
for the cooling system and coolant surge tank
pressure cap to cool if you ever have to turn
the pressure cap.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.
Notice:In cold weather, water can freeze and crack
the engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant mixture.
5-31

Electrical System
Add-On Electrical Equipment
Notice:Don’t add anything electrical to your vehicle
unless you check with your dealer rst. Some
electrical equipment can damage your vehicle and
the damage wouldn’t be covered by your warranty.
Some add-on electrical equipment can keep other
components from working as they should.
Your vehicle has an airbag system. Before attempting to
add anything electrical to your vehicle, seeServicing
Your Airbag-Equipped Vehicle on page 1-58.
Windshield Wiper Fuses
The windshield wiper motor is protected by an internal
circuit breaker. If the wiper motor overheats due to
heavy snow, the wipers will stop until the motor cools
and will then restart.
Power Windows and Other Power
Options
Circuit breakers protect the power windows and power
seats. When the current load is too heavy, the circuit
breaker opens and closes, protecting the circuit until the
problem is xed or goes away.
Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses and circuit
breakers. This greatly reduces the chance of res
caused by electrical problems.
Look at the silver-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical
size and rating. If a fuse blows, see your dealer
for service immediately.
If you ever have a problem on the road and don’t have
a spare fuse, you can “borrow” one that has the
same amperage. Pick some feature of your vehicle that
you can get along without – like the radio or cigarette
lighter – and use its fuse, if it is the correct amperage.
Replace it as soon as you can.
The fuses are located in three fuse blocks, one located
in the engine compartment on the passenger’s side
and the other two under the rear seat.
5-94

Engine (cont.)
Overheated Protection Operating Mode...........5-28
Overheating................................................5-26
Speed Limiter.............................................3-36
Starting......................................................2-23
Entry Lighting.................................................3-19
Event Data Recorders (EDR)............................7-10
Extender, Safety Belt.......................................1-27
Exterior Lighting Battery Saver..........................3-19
F
Filter
Engine Air Cleaner......................................5-21
Finish Damage...............................................5-91
Flash-to-Pass................................................... 3-9
Flat Tire........................................................5-69
Flat Tire, Changing.........................................5-70
Flat Tire, Storing.............................................5-81
Fluid
Automatic Transmission................................5-22
Power Steering...........................................5-34
Windshield Washer......................................5-35
Fog Lamp Light..............................................3-46
Fog Lamps....................................................3-18
Front Axle......................................................5-48
Front Storage Area.........................................2-47Fuel............................................................... 5-5
Additives...................................................... 5-6
California Fuel.............................................. 5-6
Filling a Portable Fuel Container....................5-10
Filling Your Tank........................................... 5-8
Fuels in Foreign Countries.............................. 5-7
Gage.........................................................3-47
Gasoline Octane........................................... 5-5
Gasoline Specications.................................. 5-5
Fuses
Fuses and Circuit Breakers...........................5-94
Rear Underseat Fuse Block................5-99, 5-101
Underhood Fuse Block.................................5-95
Windshield Wiper.........................................5-94
G
Gage
Engine Coolant Temperature.........................3-41
Fuel..........................................................3-47
Speedometer..............................................3-35
Tachometer.................................................3-36
Garage Door Opener.......................................2-42
Gasoline
Octane........................................................ 5-5
Specications............................................... 5-5
Glove Box.....................................................2-47
GM Mobility Reimbursement Program.................. 7-6
5

Oil
Engine.......................................................5-16
Pressure Light.............................................3-45
Oil, Engine Oil Life System..............................5-19
Older Children, Restraints................................1-28
Online Owner Center........................................ 7-4
OnStar
®System, see OnStar®Manual...............2-40
Operating Your All-Wheel-Drive Vehicle Off
Paved Roads..............................................4-17
Other Warning Devices...................................... 3-6
Outlet Adjustment............................................3-30
Outside
Automatic Dimming Mirror.............................2-39
Convex Mirror.............................................2-39
Curb View Assist Mirror................................2-39
Power Heated Mirrors..................................2-38
Overheated Engine Protection Operating Mode . . . 5-28
Owner Checks and Services.............................. 6-8
Owners, Canadian............................................... ii
P
Panic Brake Assist..........................................4-11
Parade Dimming.............................................3-20
Park Aid........................................................3-20Park (P)
Shifting Into................................................2-30
Shifting Out of............................................2-32
Parking
Assist........................................................3-20
Brake........................................................2-28
Over Things That Burn.................................2-33
Passenger Compartment Air Filter.....................3-32
Passing.........................................................4-14
Power
Accessory Outlets........................................3-23
Door Locks.................................................. 2-9
Electrical System.........................................5-94
Lumbar Controls........................................... 1-3
Retained Accessory (RAP)............................2-22
Seat............................................................ 1-2
Steering Fluid.............................................5-34
Windows....................................................2-14
Pretensioners, Safety Belt................................1-27
Programmable Automatic Door Locks.................2-10Q
Questions and Answers About Safety Belts.........1-14
9