2007 CADILLAC CTS overheating

Ashtray(s) and Cigarette Lighter
Your vehicle may have an ashtray and cigarette
lighter.
Notice:If you put papers, pins, or other
ammable items in the ashtray, hot cigarettes
or other smoking materials could ignite
them and possibly damage your vehicle.
Never put ammable items in the ashtray.
Ashtray
The ashtray is located under the climate control
panel on the instrument panel. Press on the
door to release the ashtray.
To empty the ashtray, remove it from the
instrument panel by gripping the edges and pulling
straight out. To reinstall, push the tray back into
place.
Cigarette Lighter
The cigarette lighter is located next to the ashtray.
The vehicle does not have a cigarette lighter for
the rear seat passengers.
Notice:Holding a cigarette lighter in while it
is heating will not allow the lighter to back
away from the heating element when it is hot.
Damage from overheating may occur to the
lighter or heating element, or a fuse could be
blown. Do not hold a cigarette lighter in
while it is heating. Do not use equipment
exceeding maximum amperage rating of
15 amperes.
SeeAccessory Power Outlet(s) on page 186for
more information.
To use the lighter, press the lighter all the way in
and release it. It will pop back out to use once
the element has heated.
188

The TC warning light will come on briey when
you turn the ignition to ON. If it does not come on
then, have it xed so it will be ready to warn
you if there is a problem.
The light will also come on if you turn the traction
control system off using the TC on/off button
located in the glove box for the CTS and on the
steering wheel for the CTS-V.
If the TC warning light stays on or comes on while
you are driving, pull off the road as soon as
possible and stop carefully. Try resetting the
system by turning the ignition off then back on.
If the light still stays on or comes back on
again while you are driving, your vehicle needs
service. Have the Traction Control System (TCS)
inspected as soon as possible. SeeTraction
Control System (TCS) (CTS) on page 293
orTraction Control System (TCS) (CTS-V) on
page 295for more information.Engine Coolant Temperature
Warning Light (CTS)
This light will come on
when you rst start the
vehicle as a check
to let you know that the
light is working.
It will go out after a few seconds. If the light does
not come on, see your dealer.
If the light does not go out or if the light comes on
and stays on while you are driving, your vehicle
may have a problem with the cooling system. You
should stop the vehicle and turn off the engine
as soon as possible to avoid damage to the
engine. A warning chime will also sound when this
light is on.
SeeEngine Overheating on page 360for more
information.
207

Engine Coolant Temperature Gage
This gage shows the
engine coolant
temperature. If the gage
pointer moves into
the shaded area, the
engine is too hot.
That reading means the same thing as the
warning light – the engine coolant is very hot.
SeeEngine Overheating on page 360.
Tire Pressure Light (CTS-V Only)
If the vehicle has the
Tire Pressure Monitor
System, this light
will come on if the
system detects low
tire pressure.
This light will also come on for a bulb check when
the vehicle is started.
SeeTire Pressure Monitor System on page 405
for more information.
For more information on the proper tire pressure,
seeLoading Your Vehicle on page 321. For
more information on your tires, seeTires on
page 392.
208

Speedometer Display
This display will show information relating to
vehicle speed, odometer, and transmission status.
The information displayed can be changed by
pressing (C). Pressing this button cycles the
displayed information as follows: digital
speedometer only, odometer only, speedometer
and odometer, or blank display.
When the transmission is shifted into
REVERSE (R), an R will appear in the
upper right corner.
During slow speed maneuvers, the engine’s
computer may command the transmission to
engage the Skip Shift feature. For more
information seeManual Transmission Operation
on page 126.
Tachometer Display
Press (B) to cycle through the following displays:
coolant temperature, oil pressure, oil temperature,
transmission temperature, tire pressure, and
lateral acceleration. Press (A) to cycle through the
displays in reverse order. If you press (A), for
about one second, the display will become blank.
Coolant Temperature
When the coolant
temperature displays
you will see the coolant
temperature symbol.
The temperature displays in degrees Fahrenheit or
Celsius with a graph beneath the reading. If the
graph shows the temperature in the shaded
area all the way on the right, then the coolant
temperature is hot. SeeEngine Overheating
on page 360for more information.
216

Engine Coolant Hot – Idle Engine
Notice:If you drive your vehicle while the
engine is overheating, severe engine damage
may occur. If an overheat warning appears
on the instrument panel cluster and/or
DIC, stop the vehicle as soon as possible. Do
not increase the engine speed above normal
idling speed. SeeEngine Overheating on
page 360for more information.
This message will appear when the engine coolant
temperature is too hot. Stop and allow the
vehicle to idle until it cools down.
Engine Power Reduced
This message informs you that the vehicle is
reducing engine power to try to protect the engine
or transmission from damage due to extreme
operating conditions. Reduced engine power can
affect the vehicle’s ability to accelerate. If this
message is on, but there is no reduction in
performance, proceed to your destination. The
performance may be reduced the next time
the vehicle is driven. The vehicle may be driven at
a reduced speed while this message is on, but
acceleration and speed may be reduced.Anytime this message stays on, the vehicle should
be taken to your dealer for service as soon as
possible.
Fuel Level Low
When this message appears on the display, it
means that your vehicle is low on fuel. You should
rell the fuel tank as soon as possible. A single
chime will sound when this message is displayed.
Headlamps Suggested
This message will appear when the amount of
available light outside the vehicle is low and
the exterior lamp control is off. This message
informs the driver that turning on the exterior lamps
is recommended even though the daytime
running lamps (DRL) are still illuminated and it has
become dark enough outside to require the
headlamps and/or other exterior lamps.
This message will also appear when the
windshield wipers have been on for more than
six seconds and the exterior lamp control is off or
in the parking lamp position.
237

Service........................................................ 332
Accessories and Modications................... 332
California Proposition 65 Warning.............. 333
Doing Your Own Service Work.................. 333
Adding Equipment to the Outside of
Your Vehicle.......................................... 334
Fuel............................................................. 334
Gasoline Octane........................................ 334
Gasoline Specications.............................. 335
California Fuel........................................... 335
Additives................................................... 336
Fuels in Foreign Countries........................ 336
Filling the Tank......................................... 337
Filling a Portable Fuel Container............... 339
Checking Things Under the Hood.............. 340
Hood Release........................................... 341
Engine Compartment Overview.................. 342
Engine Oil................................................. 346
Engine Oil Life System.............................. 349
Engine Air Cleaner/Filter............................ 351
Automatic Transmission Fluid.................... 353
Manual Transmission Fluid........................ 354Hydraulic Clutch........................................ 356
Engine Coolant.......................................... 356
Coolant Surge Tank Pressure Cap............ 360
Engine Overheating................................... 360
Overheated Engine Protection
Operating Mode..................................... 362
Cooling System......................................... 363
Power Steering Fluid................................. 368
Windshield Washer Fluid........................... 369
Brakes...................................................... 371
Battery...................................................... 375
Jump Starting............................................ 376
Rear Axle.................................................... 382
Headlamp Aiming........................................ 383
Bulb Replacement....................................... 386
High Intensity Discharge (HID) Lighting..... 386
Halogen Bulbs........................................... 386
Front Turn Signal and Fog Lamps............. 387
Taillamps, Turn Signal, Stoplamps and
Sidemarker Lamps................................. 388
Back-Up and License Plate Lamps............ 389
Replacement Bulbs................................... 389
Section 5 Service and Appearance Care
329

Hydraulic Clutch
It is not necessary to regularly check clutch uid
unless you suspect there is a leak in the system.
Adding uid will not correct a leak.
A uid loss in this system could indicate a
problem. Have the system inspected and repaired.
When to Check and What to Use
The hydraulic clutch
uid reservoir cap has
this symbol on it.
SeeEngine
Compartment Overview
on page 342for
reservoir location.
Refer to the Maintenance Schedule to determine
how often you should check the uid level in
your clutch master cylinder reservoir and for the
proper uid to use. SeeOwner Checks and
Services on page 469andRecommended Fluids
and Lubricants on page 473.
How to Check and Add Fluid
Make sure the uid level is at the MIN (Minimum)
line on the side of the reservoir. If it is not,
remove the cap and add the proper uid until the
level reaches the MIN line.
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 360.
356

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 342for more
information on location.
Engine Overheating
There are two engine hot messages that may be
displayed in the Driver Information Center
(DIC). SeeDIC Warnings and Messages on
page 232for more information.
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.
CAUTION: (Continued)
360