2011 CADILLAC DTS heating

Black plate (32,1)Cadillac DTS Owner Manual - 2011
3. When the wheel chocks are in place, release thebrake pedal until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking brake and shift the transmission into P (Park).
5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
.start the engine,
.shift into a gear, and
.release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when pulling a
trailer. See Scheduled Maintenanceon page 7‑3for
more information. Things that are especially important
in trailer operation are automatic transmission fluid,
engine oil, belts, cooling system and brake system. It is
a good idea to inspect these before and during the trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during
severe operating conditions. See Engine Overheating
on page 6‑29.
Changing a Tire When Trailer Towing
If the vehicle gets a flat tire while towing a trailer, be
sure to secure the trailer and disconnect it from the
vehicle before changing the tire.
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Black plate (1,1)Cadillac DTS Owner Manual - 2011
Section 6 Service and Appearance Care
Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Accessories and Modifications . . . . . . . . . . . . . . . . . . 6-3
California Proposition 65 Warning . . . . . . . . . . . . . . . 6-4
California Perchlorate Materials Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Doing Your Own Service Work . . . . . . . . . . . . . . . . . . 6-4
Adding Equipment to the Outside of the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . 6-7
Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Filling a Portable Fuel Container . . . . . . . . . . . . . . . 6-11
Checking Things Under the Hood . . . . . . . . . . . . . . .6-12
Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
Engine Compartment Overview . . . . . . . . . . . . . . . . 6-14
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . 6-19
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . 6-21
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29 Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-31
Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 6-32
Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . 6-32
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-33
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-36
Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-38
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46
High Intensity Discharge (HID) Lighting . . . . . . . . 6-46
Windshield Wiper Blade Replacement . . . . . . . . . . .6-46
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-48
Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . . . . 6-49
Tire Terminology and Definitions . . . . . . . . . . . . . . . 6-54
Inflation - Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . 6-57
High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . . 6-59
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . 6-60
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . 6-61
Tire Inspection and Rotation . . . . . . . . . . . . . . . . . . . 6-65
When It Is Time for New Tires . . . . . . . . . . . . . . . . . 6-67
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-68
Different Size Tires and Wheels . . . . . . . . . . . . . . . 6-70
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 6-70
Wheel Alignment and Tire Balance . . . . . . . . . . . . 6-72
Wheel Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-72
6-1

Black plate (26,1)Cadillac DTS Owner Manual - 2011
Engine Coolant
The cooling system in the vehicle is filled with
DEX-COOL®engine coolant. This coolant is designed
to remain in the vehicle for five years or 150,000 miles
(240 000 km), whichever occurs first.
The following explains the cooling system and how to
check and add coolant when it is low. If there is a
problem with engine overheating, see Engine
Overheating on page 6‑29.
What to Use
{WARNING:
Adding only plain water or some other liquid to the
cooling system can be dangerous. Plain water
and other liquids, can boil before the proper
coolant mixture will. The vehicle's coolant warning
system is set for the proper coolant mixture. With
plain water or the wrong mixture, the engine could
get too hot but you would not get the overheat
warning. The engine could catch fire and you or
others could be burned. Use a 50/50 mixture of
clean, drinkable water and DEX-COOL coolant. Use a 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant. If using this mixture, nothing else
needs to be added. This mixture:
.Gives freezing protection down to −34°F (−37°C),
outside temperature.
.Gives boiling protection up to 265°F (129°C),
engine temperature.
.Protects against rust and corrosion.
.Will not damage aluminum parts.
.Helps keep the proper engine temperature.
Notice: If an improper coolant mixture is used, the
engine could overheat and be badly damaged. The
repair cost would not be covered by the vehicle
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core, and
other parts.
Notice: If extra inhibitors and/or additives are used
in the vehicle's cooling system, the vehicle could be
damaged. Use only the proper mixture of the engine
coolant listed in this manual for the cooling system.
See Recommended Fluids and Lubricants
on
page 7‑9for more information.
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Black plate (29,1)Cadillac DTS Owner Manual - 2011
4.6L L37 Engine shown, 4.6L LD8 Engine similar
4. With the coolant surge tank cap off, start the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fans.
By this time, the coolant level inside the coolant
surge tank may be lower. If the level is lower, add
more of the proper mixture to the coolant surge
tank until the level reaches the FULL COLD mark
on the side of the coolant surge tank.
5. Replace the cap. Be sure the cap is hand‐tight and fully seated. 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.
If coolant is needed, add the proper DEX-COOL
®
coolant mixture at the coolant recovery tank.
Engine Overheating
The vehicle has several indicators to warn of engine
overheating.
There is an engine temperature warning light and/or
gauge on the instrument panel cluster. See Engine
Coolant Temperature Warning Light
on page 4‑53and
Engine Coolant Temperature Gauge on page 4‑53.
The vehicle may also display a ENGINE OVERHEATED
IDLE ENGINE message or an ENGINE OVERHEATED
STOP ENGINE message displayed in the Driver
Information Center (DIC). See DIC Warnings and
Messages
on page 4‑65for more information. You will
also hear a chime.
The decision may be made not to lift the hood when
this warning appears, but instead get service help right
away. See Roadside Service on page 8‑7.
If the decision is made to lift the hood , make sure the
vehicle is parked on a level surface.
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Black plate (30,1)Cadillac DTS Owner Manual - 2011
Then check to see if the engine cooling fans are
running. If the engine is overheating, both fans should
be running. If they are not, do not continue to run the
engine and have the vehicle serviced.
Notice:Engine damage from running the engine
without coolant is not covered by the warranty.
Notice: If the engine catches fire while driving with
no coolant, the vehicle can be badly damaged. The
costly repairs would not be covered by the vehicle
warranty. See Overheated Engine Protection
Operating Mode
on page 6‑31for information on
driving to a safe place in an emergency.
If Steam Is Coming From The Engine
Compartment
{WARNING:
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.
(Continued)
WARNING: (Continued)
If you keep driving when the vehicles engine is
overheated, the liquids in it can catch fire. You or
others could be badly burned. Stop the engine if
it overheats, and get out of the vehicle until the
engine is cool.
SeeOverheated Engine Protection Operating
Mode
on page 6‑31for information on driving to
a safe place in an emergency.
If No Steam Is Coming From The
Engine Compartment
If an engine overheat warning is displayed but no steam
can be seen or heard, the problem may not be too
serious. Sometimes the engine can get a little too hot
when the vehicle:
.Climbs a long hill on a hot day.
.Stops after high-speed driving.
.Idles for long periods in traffic.
.Tows a trailer.
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Black plate (48,1)Cadillac DTS Owner Manual - 2011
Tires
Your new vehicle comes with high-quality tires
made by a leading tire manufacturer. If you ever
have questions about your tire warranty and
where to obtain service, see your vehicle
Warranty booklet for details. For additional
information refer to the tire manufacturer.
{WARNING:
.Poorly maintained and improperly used tires
are dangerous.
.Overloading your tires can cause overheating
as a result of too much flexing. You could
have a blowout and a serious accident. See
Loading the Vehicle on page 5‑18.
.Under inflated tires pose the same danger as
overloaded tires. The resulting crash could
cause serious injury. Check all tires frequently
to maintain the recommended pressure. Tire
pressure should be checked when your tires
are cold.(Continued)
WARNING: (Continued)
.Over inflated tires are more likely to be
cut, punctured, or broken by a sudden
impact—such as when you hit a pothole.
Keep tires at the recommended pressure.
.Worn or old tires can cause a crash. If your
tread is badly worn, replace them.
.Replace any tires that have been damaged by
impacts with potholes, curbs, etc.
.Improperly repaired tires can cause a crash.
Only your dealer or an authorized tire service
center should repair, replace, dismount, and
mount the tires.
.Do not spin the tires in excess of 55 km/h
(35 mph) on slippery surfaces such as snow,
mud, ice, etc. Excessive spinning may cause
the tires to explode.
See High-Speed Operation
on page 6‑59for inflation
pressure adjustment for high speed driving.
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Black plate (57,1)Cadillac DTS Owner Manual - 2011
Inflation - Tire Pressure
Tires need the correct amount of air pressure to
operate effectively.
Notice:Do not let anyone tell you that
under‐inflation or over‐inflation is all right.
It is not. If your tires do not have enough air
(under‐inflation), you can get the following:
.Tire overloading and over-heating which
could lead to a blowout.
.Premature or irregular wear.
.Poor handling.
.Reduced fuel economy.
If your tires have too much air (over‐inflation),
you can get the following:
.Unusual wear.
.Poor handling.
.Rough ride.
.Needless damage from road hazards. A vehicle specific Tire and Loading Information
label is attached to your vehicle. This label shows
your vehicle's original equipment tires and the
correct inflation pressures for your tires when they
are cold. The recommended cold tire inflation
pressure, shown on the label, is the minimum
amount of air pressure needed to support your
vehicle's maximum load carrying capacity.
For additional information regarding how much
weight your vehicle can carry, and an example
of the Tire and Loading Information label, see
Loading the Vehicle
on page 5‑18. How you load
your vehicle affects the vehicle handling and ride
comfort, never load your vehicle with more weight
than it was designed to carry.
When to Check
Check your tires once a month or more. Do not
forget to check the spare tire. If your vehicle
has a compact spare tire, it should be at 60 psi
(420 kPa). For additional information see Spare
Tire
on page 6‑93.
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Black plate (5,1)Cadillac DTS Owner Manual - 2011
Driving (cont.)Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
In Rain and on Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Loss of Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Rocking Your Vehicle to Get it Out . . . . . . . . . . . . . . . . 5-17
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
Driving for Better Fuel Economy . . . . . . . . . . . . . . . . . . . 1-22
Dual Climate Control System . . . . . . . . . . . . . . . . . . . . . . 4-34
E
EDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . 6-103
Electrical System Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . .6-104
Headlamp Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-103
Power Windows and Other Power Options . . . . . .6-104
Rear Underseat Fuse Block . . . . . . . . . . . . . . . . . . . . .6-107
Underhood Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . .6-104
Windshield Wiper Fuses . . . . . . . . . . . . . . . . . . . . . . . . .6-103
Electronic Immobilizer PASS-Key
®III+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Electronic Immobilizer Operation PASS-Key
®III+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20 Engine
Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-19
Check and Service Engine Soon Light . . . . . . . . . . . . 4-54
Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14
Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-26
Coolant Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 4-53
Coolant Temperature Warning Light . . . . . . . . . . . . . . 4-53
Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24
Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
Overheated Protection Operating Mode . . . . . . . . . . 6-31
Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-29
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Engine Oil
Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Event Data Recorders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Extender, Safety Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
Exterior Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Exterior Lighting Battery Saver . . . . . . . . . . . . . . . . . . . . 4-30
i - 5