engine overheat CADILLAC XLR 2007 1.G User Guide

If Steam Is Coming From Your Engine
{CAUTION:
Steam from an overheated engine can
burn you badly, even if you just open the
hood. Stay away from the engine if you
see or hear steam coming from it. Turn it
off and get everyone away from the
vehicle until it cools down. Wait until
there is no sign of steam or coolant
before you open the hood.
If you keep driving when the vehicles
engine is overheated, the liquids in it can
catch re. You or others could be badly
burned. Stop your engine if it overheats,
and get out of the vehicle until the engine
is cool.
SeeOverheated Engine Protection
Operating Mode on page 390for
information on driving to a safe place in
an emergency.Notice:If your engine catches re because
you keep driving with no coolant, your vehicle
can be badly damaged. The costly repairs
would not be covered by your warranty. See
Overheated Engine Protection Operating Mode
on page 390for information on driving to a
safe place in an emergency.
If No Steam Is Coming From Your
Engine
An overheat warning, along with a low coolant
message, can indicate a serious problem.
If you get an engine overheat warning with no low
coolant message, but see or hear no steam,
the problem may not be too serious. Sometimes
the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high-speed driving.
Idle for long periods in traffic.
Tow a trailer.
389

If you get the overheat warning with no sign of
steam, try this for a minute or so:
1. In heavy traffic, let the engine idle in
NEUTRAL (N) while stopped. If it is safe to do
so, pull off the road, shift to PARK (P) or
NEUTRAL (N) and let the engine idle.
2. Set the climate controls to the highest heat
setting and fan speed and open the windows
as necessary.
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, pull over, stop, and park
your vehicle right away.
If there is still no sign of steam, 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 vehicle until it cools down.
Also, see “Overheated Engine Protection
Operating Mode” later in this section.
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 situation. If
an overheated engine condition exists and the
DIC message ENGINE HOT, STOP ENGINE is
displayed, an overheat protection mode which
alternates ring groups of cylinders helps prevent
engine damage. In this mode, you will notice a
signicant loss in power and engine performance.
Driving extended miles (km) 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, change the oil and reset the oil life
system. SeeEngine Oil on page 377.
390

A low coolant level should be indicated by a LOW
COOLANT message on the Driver Information
Center (DIC). If it is, 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 fan
is running. If the engine is overheating, the
fan should be running. If it is not, your vehicle
needs service.Notice:Engine damage from running your
engine without coolant is not covered by your
warranty. SeeOverheated Engine Protection
Operating Mode on page 390for 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 could 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.
392

{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.
{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.
394

E
Edit
Avoid Point/Area...................................... 257
Memory Point.......................................... 250
Waypoint.................................................. 254
Electrical System
Add-On Equipment................................... 452
Fuses and Circuit Breakers...................... 453
Instrument Panel Fuse Block................... 453
Power Windows and Other Power
Options................................................. 452
Underhood Fuse Block............................. 455
Windshield Wiper Fuses........................... 452
Engine
Air Cleaner/Filter...................................... 382
Battery..................................................... 402
Check and Service Engine Soon Light..... 196
Coolant.................................................... 385
Coolant Temperature Gage...................... 195
Drive Belt Routing.................................... 476
Engine Compartment Overview................ 374
Exhaust................................................... 102
Oil ........................................................... 377
Oil Life System........................................ 380
Oil Pressure Gage................................... 200
Overheated Protection Operating Mode.... 390Engine (cont.)
Overheating............................................. 388
Starting...................................................... 89
Supercharger Oil...................................... 382
Enter Destination......................................... 259
Entry/Exit Lighting....................................... 170
Event Data Recorders (EDR)...................... 491
Extender, Safety Belt..................................... 27
Exterior Lamps............................................ 164
Exterior Lighting Battery Saver.................... 169
F
Filter
Engine Air Cleaner................................... 382
Finish Damage............................................ 449
Flashers, Hazard Warning........................... 140
Flash-to-Pass.............................................. 143
Flat Tire...................................................... 440
Floor Mats................................................... 122
Fluid
Automatic Transmission............................ 384
Power Steering........................................ 396
Windshield Washer.................................. 397
Fog Lamp Light........................................... 201
Fog Lamps.................................................. 168
503

Message
DIC Warnings and Messages................... 206
Mirrors
Automatic Dimming Rearview with
OnStar
®................................................ 104
Outside Automatic Dimming Mirror........... 105
Outside Convex Mirror............................. 106
Outside Curb View Assist Mirror............... 106
Outside Power Heated Mirrors................. 105
MyGMLink.com............................................ 484
N
Navigation..........................................232, 234
Using the System.................................... 240
New Vehicle Break-In.................................... 87
Normal Maintenance Replacement Parts..... 475
O
Odometer.................................................... 187
Odometer, Trip............................................ 187
Off-Road Recovery...................................... 335Oil
Engine..................................................... 377
Engine Oil Pressure Gage....................... 200
Life Indicator............................................ 224
Supercharger, Engine............................... 382
Oil, Engine Oil Life System......................... 380
Older Children, Restraints............................. 28
Online Owner Center................................... 484
OnStar
®System.......................................... 281
OnStar®System, see OnStar®Manual........ 107
Ordering
Map DVDs............................................... 284
Other Warning Devices................................ 140
Outlet Adjustment........................................ 184
Outlet(s), Accessory Power.......................... 177
Outside
Automatic Dimming Mirror........................ 105
Convex Mirror.......................................... 106
Curb View Assist Mirror........................... 106
Power Heated Mirrors .............................. 105
Overheated Engine Protection
Operating Mode....................................... 390
Owner Checks and Services....................... 470
Owners, Canadian.......................................... 3
507