engine overheat CADILLAC XLR 2007 1.G Owners Manual

Notice:Cranking the engine for long periods
of time, by pressing the START button
immediately after cranking has ended, can
overheat and damage the cranking motor, and
drain the battery. Wait at least 15 seconds
between each try, to allow the cranking motor
to cool down.
Your vehicle has a Computer-Controlled Cranking
System. This feature assists in starting the
engine and protects components. Once cranking
has been initiated, the engine continues cranking
for a few seconds or until the vehicle starts. If
the engine does not start, cranking automatically
be stops after 15 seconds to prevent cranking
motor damage. To prevent gear damage,
this system also prevents cranking if the engine is
already running.
Notice:Your engine is designed to work with
the electronics in your vehicle. If you add
electrical parts or accessories, you could
change the way the engine operates. Before
adding electrical equipment, check with
your dealer. If you do not, your engine might
not perform properly. Any resulting damage
would not be covered by your vehicle’s
warranty.Stopping Your Engine
Move the shift lever to PARK (P) and press the
Acc. (Off/Accessory) button located on the
instrument panel. If the shifter is not in PARK (P),
the engine shuts off and the vehicle goes into
the Accessory Mode. The DIC displays″SHIFT TO
PARK″. Once the shifter is moved to PARK (P),
the vehicle turns off.
If the keyless access transmitter is not detected
inside the vehicle when it is turned to off, the DIC
displays NO FOB – OFF OR RUN?.
SeeDIC Warnings and Messages on page 206for
more information.
91

Shifting Into Park (P)
{CAUTION:
It can be dangerous to get out of your
vehicle if the shift lever is not fully in
PARK (P) with the parking brake rmly
set. Your vehicle can roll. If you have left
the engine running, the vehicle can move
suddenly. You or others could be injured.
To be sure your vehicle will not move,
even when you are on fairly level ground,
use the steps that follow.
1. Hold the brake pedal down with your right foot
and set the parking brake.
2. Move the shift lever into PARK (P) by pushing
the lever all the way toward the front of the
vehicle.
3. Turn the ignition off.
Leaving Your Vehicle With the Engine
Running
{CAUTION:
It can be dangerous to leave your vehicle
with the engine running. Your vehicle
could move suddenly if the shift lever is
not fully in PARK (P) with the parking
brake rmly set. And, if you leave the
vehicle with the engine running, it could
overheat and even catch re. You or
others could be injured. Do not leave your
vehicle with the engine running.
If you have to leave your vehicle with the engine
running, be sure your vehicle is in PARK (P)
and your parking brake is rmly set before you
leave it. After you have moved the shift lever into
PARK (P), hold down the regular brake pedal.
See if you can move the shift lever away
from PARK (P) without rst pulling it toward you. If
you can, it means that the shift lever was not
fully locked into PARK (P).
99

If you turn off the StabiliTrak®system, by pressing
the front part of the button on the console for
ve seconds, the TCS light will come on, a chime
will sound and the TRAC/STABILITRAK OFF
message will be displayed in the DIC. The TCS
will also be turned off. SeeDIC Warnings and
Messages on page 206for more information.
If the StabiliTrak
®system and TCS are turned off,
pressing the console button momentarily will
turn both systems on. The DIC will display the
TRAC/STABILITRAK ON message, the instrument
cluster light will be off and a chime will sound.
SeeDIC Warnings and Messages on page 206for
more information.
Engine Coolant Temperature Gage
This gage shows the engine coolant temperature.
As the pointer nears 260°F (125°C), your
engine coolant temperature is high. A message
may display on the Driver Information Center (DIC)
depending on how high the temperature is. See
DIC Warnings and Messages on page 206
for more information.
SeeEngine Overheating on page 388for more
information.
United StatesCanada
195

CLEAN RADAR CRUISE
If your vehicle has this feature, this message
displays when the Adaptive Cruise Control (ACC)
system is disabled because the radar is blocked
and cannot detect vehicles in your path. It
may also activate during heavy rain or due to road
spray. To clean the system, seeAdaptive Cruise
Control on page 150.
CLOSE CARGO DIVIDER
This message displays if the cargo divider is not in
place. Open the trunk and make sure the cargo
divider is secure and no objects are on the divider.
SeeRear Storage Area on page 123for more
information.
COOLANT OVER TEMP (Temperature)
This message displays when the engine coolant
temperature is too hot. Stop and allow your vehicle
to idle in PARK (P) until it cools down and the
message is removed. Do not increase engine
speed above a normal idle. If it does not
cool down, turn off the engine and have your
vehicle serviced by your dealer before driving itagain. Severe engine damage can result from an
overheated engine. SeeEngine Overheating
on page 388.
CRUISE NOT READY
This message indicates that the Adaptive Cruise
Control (ACC) will not activate due to a temporary
condition. Your vehicle does not require service.
If this message displays when you attempt to
activate the system, continue driving for several
minutes, then try to activate the system again.
DRIVER NO. X (1 OR 2)
This message displays when the vehicle is started
or when there is a change of driver. The
message shows which driver is activating the
personalization feature. It will only stay on for
ve seconds.
ENGINE HOT, STOP ENGINE
This message displays when the engine has
overheated. Stop and turn the engine off
immediately to avoid severe engine damage. See
Engine Overheating on page 388. A multiple
chime also sounds when this message displays.
208

ENGINE PROTECTION REDUCE
ENGINE RPM
If this message displays, the control system has
determined that continued operation at the existing
engine speed may lead to engine overheating.
Lower the engine speed by upshifting the
transmission or drive at a lower speed.
HEADLAMPS SUGGESTED
This message displays if it is dark enough outside
and the headlamps and Twilight Sentinel®
controls are off. This message informs the driver
that turning on the exterior lamps is recommended.
It has become dark enough outside to require
the headlamps and/or other exterior lamps. This
message also displays if the optional Rainsense™
wiping feature is on and the Twilight Sentinel
®
is off.
HIGH TRANS (Transmission) TEMP
(Temperature)
This message displays when the transmission uid
in your vehicle is too hot. Stop and allow your
vehicle to idle until it cools down or until this
message is removed.
HIGH VOLTAGE
This message displays when the electrical
charging system is overcharging. To avoid being
stranded, have the electrical system checked
by your dealer. You can reduce the charging
overload by using the accessories. Turn on the
lamps and radio, set the climate control on AUTO
and the fan speed on HI, and turn the rear
window defogger on. You can monitor battery
voltage on the DIC by pressing the information
button. The normal range is 11.5 to 15.5 volts
when the engine is running.
HOT ENGINE–A/C OFF
This message displays when the engine coolant
becomes hotter than the normal operating
temperature. You can continue to drive your
vehicle. If this message continues to display, have
the system repaired by your dealer as soon as
possible to avoid compressor damage.
ICE POSSIBLE
This message displays when the outside air
temperature is cold enough to create icy road
conditions. Adjust your driving accordingly.
209

You will need a well-charged battery to restart the
vehicle, and possibly for signaling later on with
your headlamps. Let the heater run for a while.
Then, shut the engine off and close the window
almost all the way to preserve the heat. Start
the engine again and repeat this only when you
feel really uncomfortable from the cold. But do it as
little as possible. Preserve the fuel as long as
you can. To help keep warm, you can get out of
the vehicle and do some fairly vigorous exercises
every half hour or so until help comes.
If Your Vehicle is Stuck in Sand,
Mud, Ice, or Snow
In order to free your vehicle when it is stuck, you
will need to spin the wheels, but you do not
want to spin your wheels too fast. The method
known as rocking can help you get out when you
are stuck, but you must use caution.
{CAUTION:
If you let your vehicle’s tires spin at high
speed, they can explode, and you or
others could be injured. And, the
transmission or other parts of the vehicle
can overheat. That could cause an engine
compartment re or other damage. When
you are stuck, spin the wheels as little as
possible. Do not spin the wheels above
35 mph (55 km/h) as shown on the
speedometer.
Notice:Spinning the wheels can destroy parts
of your vehicle as well as the tires. If you
spin the wheels too fast while shifting
the transmission back and forth, you can
destroy the transmission.
For information about using tire chains on your
vehicle, seeTire Chains on page 435.
353

Service........................................................ 363
Accessories and Modications................... 363
California Proposition 65 Warning.............. 364
Doing Your Own Service Work.................. 364
Adding Equipment to the Outside of Your
Vehicle................................................... 365
Fuel............................................................. 365
Gasoline Octane........................................ 366
Gasoline Specications.............................. 366
California Fuel........................................... 367
Additives................................................... 367
Fuels in Foreign Countries........................ 368
Filling the Tank......................................... 369
Filling a Portable Fuel Container............... 371
Checking Things Under the Hood.............. 372
Hood Release........................................... 373
Engine Compartment Overview.................. 374
Engine Oil................................................. 377
Engine Oil Life System.............................. 380
Supercharger Oil....................................... 382
Engine Air Cleaner/Filter............................ 382
Automatic Transmission Fluid.................... 384
Engine Coolant.......................................... 385
Coolant Surge Tank Pressure Cap.............. 388Engine Overheating................................... 388
Overheated Engine Protection
Operating Mode..................................... 390
Cooling System......................................... 391
Power Steering Fluid ................................. 396
Windshield Washer Fluid........................... 397
Brakes...................................................... 399
Battery...................................................... 402
Jump Starting............................................ 403
Rear Axle.................................................... 407
Headlamp Aiming........................................ 408
Headlamp Vertical Aiming.......................... 410
Bulb Replacement....................................... 412
Windshield Replacement............................ 412
Windshield Wiper Blade Replacement....... 412
Tires............................................................ 413
Winter Tires (XLR-V) ................................. 414
Tire Sidewall Labeling............................... 415
Tire Terminology and Denitions............... 417
Run-Flat Tires........................................... 420
Ination - Tire Pressure............................. 422
Tire Pressure Monitor System................... 423
Tire Inspection and Rotation...................... 426
Section 6 Service and Appearance Care
361

Change the uid and lter at the intervals listed in
Additional Required Services on page 467, and
be sure to use the uid listed inRecommended
Fluids and Lubricants on page 473.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is
designed to remain in your vehicle for ve years or
150,000 miles (240 000 km), whichever occurs
rst, if you add only DEX-COOL
®extended
life coolant.
The following explains your cooling system and
how to add coolant when it is low. If you have
a problem with engine overheating, seeEngine
Overheating on page 388.A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Giving freezing protection down to−34°F
(−37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
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
the rst maintenance service after each
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.
385

What to Use
Use a mixture of one-half clean, drinkable water
and one-half DEX-COOL®coolant which will
not damage aluminum parts. If you use this coolant
mixture, you do not need to add anything else.
{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:If you use an improper coolant
mixture, your engine could overheat and be
badly damaged. The repair cost would not be
covered by your warranty. Too much water
in the mixture can freeze and crack the engine,
radiator, heater core, and other parts.
If you have to add coolant more than four times a
year, have your dealer check your cooling
system.
Notice:If you use extra inhibitors and/or
additives in your vehicle’s cooling system, you
could damage your vehicle. Use only the
proper mixture of the engine coolant listed in
this manual for the cooling system. See
Recommended Fluids and Lubricants on
page 473for more information.
386

Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixture at the surge tank,
but only when the engine is cool.
{CAUTION:
You can be burned if you spill coolant on
hot engine parts. Coolant contains
ethylene glycol, and it will burn if the
engine parts are hot enough. Do not spill
coolant on a hot engine.
When replacing the pressure cap, press down and
turn it clockwise until you hear a clicking sound.
Make sure the cap is hand-tight and fully seated.
Coolant Surge Tank Pressure Cap
Notice:If the pressure cap is not tightly
installed, coolant loss and possible engine
damage may occur. Be sure the cap is properly
and tightly secured.
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank. SeeEngine
Compartment Overview on page 374for more
information on location.
Engine Overheating
You will nd a COOLANT OVER TEMP message
or an ENGINE HOT, STOP ENGINE message
displayed in the Driver Information Center (DIC).
SeeDIC Warnings and Messages on page 206.
You will also hear a chime.
There is also an engine coolant temperature gage
on the instrument panel cluster. SeeEngine
Coolant Temperature Gage on page 195.
388