2007 CADILLAC DTS coolant temperature

The remote vehicle start feature will not operate if
the key is in the ignition, the hood is not closed,
or if there is an emission control system
malfunction.
The engine will turn off during a remote vehicle
start if the coolant temperature gets too high,
or the oil pressure is too low.
Your vehicle was shipped from the factory with the
remote vehicle start system enabled. The
system may be disabled through the Driver
Information Center (DIC). See “REMOTE START”
underDIC Vehicle Customization on page 259
for additional information.
SeeEngine Exhaust on page 130for important
safety information when using remote start
in a closed garage.
Remote Start Ready
If your vehicle does not have the remote vehicle
start feature, it may have the remote start
ready feature. This feature allows your dealer to
add the manufacturer’s remote vehicle start
feature. See your dealer if you would like to add
the manufacturer’s remote vehicle start feature
to your vehicle.
Doors and Locks
Door Locks
{CAUTION:
Unlocked doors can be dangerous.
Passengers, especially children, can
easily open the doors and fall out of a
moving vehicle. When a door is
locked, the handle will not open it.
You increase the chance of being
thrown out of the vehicle in a crash if
the doors are not locked. So, wear
safety belts properly and lock the
doors whenever you drive.
CAUTION: (Continued)
102

Engine Coolant Heater
Your vehicle may have an engine coolant heater.
In very cold weather, 0°F (−18°C) or colder,
the engine coolant heater can help. You will get
easier starting and better fuel economy during
engine warm-up. Usually, the coolant heater
should be plugged in a minimum of four hours
prior to starting your vehicle. At temperatures
above 32°F (0°C), use of the coolant heater is not
required.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The electrical cord is located on the driver’s
side of the engine, behind the transaxle
dipstick/uid ll location and next to the
engine.
3. Plug it into a normal, grounded 110-volt AC
outlet.
{CAUTION:
Plugging the cord into an ungrounded
outlet could cause an electrical shock.
Also, the wrong kind of extension cord
could overheat and cause a re. You could
be seriously injured. Plug the cord into a
properly grounded three-prong 110-volt AC
outlet. If the cord will not reach, use a
heavy-duty three-prong extension cord
rated for at least 15 amps.
4. Before starting the engine, be sure to unplug
and store the cord as it was before to keep it
away from moving engine parts. If you do not, it
could be damaged.
How long should you keep the coolant heater
plugged in? The answer depends on the outside
temperature, the kind of oil you have, and some
other things. Instead of trying to list everything here,
we ask that you contact your dealer in the area
where you will be parking your vehicle. The
dealer/retailer can give you the best advice for that
particular area.
121

Warning Lights, Gages, and Indicators..... 222
Instrument Panel Cluster........................... 223
Speedometer and Odometer...................... 224
Tachometer............................................... 224
Safety Belt Reminder Light........................ 225
Passenger Safety Belt Reminder Light....... 225
Airbag Readiness Light............................. 226
Passenger Airbag Status Indicator............. 227
Charging System Light.............................. 229
Brake System Warning Light..................... 229
Anti-Lock Brake System Warning Light...... 230
Low Tire Pressure Warning Light.............. 231
Traction Control System (TCS)
Warning Light........................................ 232
StabiliTrak
®Indicator Light......................... 232
Engine Coolant Temperature
Warning Light........................................ 233
Engine Coolant Temperature Gage............ 233
Malfunction Indicator Lamp........................ 234
Oil Pressure Light..................................... 237
Security Light............................................ 237
Fog Lamp Light......................................... 238Lights On Reminder.................................. 238
Cruise Control Light.................................. 238
Highbeam On Light................................... 238
Fuel Gage................................................. 239
Driver Information Center (DIC).................. 240
DIC Controls and Displays........................ 240
DIC Warnings and Messages.................... 246
DIC Vehicle Customization........................ 259
Audio System(s)......................................... 268
Setting the Time........................................ 269
Radio with CD (MP3)................................ 273
Using an MP3........................................... 287
XM Radio Messages................................. 294
Navigation/Radio System........................... 296
Theft-Deterrent Feature............................. 296
Audio Steering Wheel Controls.................. 296
Radio Reception........................................ 298
Care of Your CDs..................................... 299
Care of the CD Player.............................. 299
Backglass Antenna.................................... 300
XM™ Satellite Radio Antenna System....... 300
Section 3 Instrument Panel
160

Engine Coolant Temperature
Warning Light
The engine coolant
temperature warning
light will come on when
the engine is very hot.
This light will also come on briey when the
vehicle is started.
If the light does not go out or comes on and stays
on while driving, there may be a problem with
the cooling system. Driving with engine coolant
temperature light on could cause your vehicle
to overheat, seeOverheated Engine Protection
Operating Mode on page 379. SeeEngine
Overheating on page 377andDIC Warnings and
Messages on page 246for more information.
Engine Coolant Temperature Gage
This gage shows
the engine coolant
temperature.
It indicates when the engine has warmed up and
if the cooling system is operating properly. If
the gage pointer moves into the shaded area,
the engine coolant is too hot and the engine
coolant temperature warning light will come on.
SeeEngine Overheating on page 377for
more information.
233

CRUISE SET TO XXX MPH (km/h)
This message displays whenever the cruise control
is set. SeeCruise Control on page 176and
Adaptive Cruise Control on page 179for more
information.
If your vehicle has Adaptive Cruise Control (ACC),
after a few seconds, this message clears and
the message “SET SPD XX” displays at the bottom
of the DIC. See “SET SPD (Speed)” later in this
section.
DRIVER DOOR OPEN
This symbol appears
with this message.
This message displays when the driver’s door
is not closed completely. Make sure that the
driver’s door is closed completely.
ENGINE HOT – A/C
(Air Conditioning) OFF
This message displays when the engine coolant
becomes hotter than the normal operating
temperature. SeeEngine Coolant Temperature
Gage on page 233. To avoid added strain on
a hot engine, the air conditioning compressor
automatically turns off. When the coolant
temperature returns to normal, the air conditioning
compressor turns back on. You can continue to
drive your vehicle.
If this message continues to appear, have the
system repaired by your dealer as soon as
possible to avoid damage to the engine.
248

ENGINE OVERHEATED 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 377for more information.
This message displays when the engine coolant
temperature is too hot. Stop and allow the vehicle
to idle until it cools down. SeeEngine Coolant
Temperature Warning Light on page 233.
SeeOverheated Engine Protection Operating
Mode on page 379for information on driving to
a safe place in an emergency.
ENGINE OVERHEATED STOP 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.
SeeEngine Overheating on page 377for more
information.This message displays when the engine has
overheated. Immediately look for a safe place
to pull your vehicle over and turn the engine
off right away to avoid severe engine damage.
SeeEngine Overheating on page 377and
Overheated Engine Protection Operating Mode
on page 379. A chime also sounds when this
message is displayed.
ENGINE POWER REDUCED
This message displays when the engine power is
being reduced to protect the engine from damage.
There could be several malfunctions that might
cause this message. 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.
249

How to Add Automatic Transaxle Fluid
Refer to the Maintenance Schedule to determine
what kind of transaxle uid to use. See
Recommended Fluids and Lubricants on page 475.
If the uid level is low, add only enough of the
proper uid to bring the level into the
cross-hatched area on the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough uid at
the dipstick hole to bring it to the proper level.
It does not take much uid, generally less
than one pint (0.5 L). Do not overll.
Notice:Use of the incorrect automatic
transaxle uid may damage your vehicle, and
the damages may not be covered by your
warranty. Always use the automatic transaxle
uid listed inRecommended Fluids and
Lubricants on page 475.
3. After adding uid, recheck the uid level as
described under “How to Check Automatic
Transaxle Fluid,” earlier in this section.
4. When the correct uid level is obtained, push
the dipstick back in all the way and turn the
handle clockwise.
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 377.
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.
374

Adding Coolant
If you need more coolant, add the proper
DEX-COOL®coolant mixture at the coolant 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, make sure to
turn the cap until it clicks.
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.
SeeEngine Compartment Overview on page 364
for more information on location.
Engine Overheating
You will nd an ENGINE OVERHEATED IDLE
ENGINE message or an ENGINE OVERHEATED
STOP ENGINE message displayed in the
Driver Information Center (DIC). SeeDIC
Warnings and Messages on page 246for more
information. You will also hear a chime.
There is also an engine temperature warning light
and/or gage on the instrument panel cluster.
SeeEngine Coolant Temperature Warning Light
on page 233andEngine Coolant Temperature
Gage on page 233.
377