2006 CADILLAC DTS PROFESSIONAL climate control

Rear Climate Control System
If your vehicle has a rear climate-control system, the
rear-seat passengers can use it to adjust the direction of
the airow, the fan speed and the temperature for the
rear-seating area. This system also works with the main
climate-control system in your vehicle.The control panel for this system is located on the back
of the center console.
If the AUX button located on the front climate control
panel is pressed, the rear climate control system will be
turned on. The rear system will operate in automatic
mode and the temperature settings selected for the front
climate control panel will also be selected for the rear
passengers.
If the rear passenger would like to adjust the rear
climate control system, they can select a different
temperature and a different mode or fan speed.
Whenever the rear passengers have adjusted settings
on the rear climate control system, the AUX light is lit on
the front climate control system. The driver can turn
off the auxiliary fan by pressing the AUX button.
When the front climate control system is turned off or
in defrost mode, the rear climate control system is
turned off. The rear system will turn back on once
another front mode is selected.
For more information on how to use the climate
control system, seeDual Climate Control System on
page 3-44. For more information on the air outlets,
seeOutlet Adjustment on page 3-50.
3-51

Automatic Operation
«A ª(Fan):Press this button until AUTO appears
on the display to place the system in automatic mode.
When automatic operation is active, the system will
automatically control the fan speed. If in auto fan mode,
pressing the up arrow button will cancel automatic
operation and places the system in manual mode. If in
auto mode, pressing the down arrow will turn the
rear climate control system off.
«Nª(Mode):Press the this button until AUTO
appears on the display to place the system in automatic
mode. When automatic operation is active, the system
will automatically control the air delivery mode.
Manual Operation
«A ª(Fan):Press these up or down arrow
buttons to increase or decrease the fan speed.
«bª(Temperature):Press these up or down
arrow buttons to increase or decrease the temperature
for the rear seat passengers. Once the rear setting
temperature is altered from following the front setting
temperature, it will no longer follow changes to the front
setting temperature until the front climate control
AUX button resets it.
«Nª(Mode):Press these buttons to change the
air delivery mode. If in AUTO air delivery mode, pressing
the up arrow button will cancel automatic operation
and place the system in manual mode.
Y(Vent):This mode directs air to the upper outlets.
%(Bi-Level):This mode directs half the air to
the upper outlets, and the other half to the oor outlets.
[(Floor):This mode directs the air to the oor
outlets.
For more information on how to use the front climate
control system, seeDual Climate Control System
on page 3-44.
For more information on the air outlets, seeOutlet
Adjustment on page 3-50. Be sure to keep the area
under the front seats clear of any objects so that the air
inside of your vehicle can circulate effectively.
3-52

REMOTE KEY LEARNING ACTIVE
This message will display while you are matching a
remote keyless entry transmitter to your vehicle.
See “Matching Transmitter(s) to Your Vehicle” under
Remote Keyless Entry System Operation on page 2-5
andDIC Controls and Displays on page 3-72for
more information.
REPLACE BATTERY IN REMOTE KEY
This message will display when the battery in your
remote keyless entry transmitter needs to be replaced.
To replace the battery, see “Battery Replacement”
underRemote Keyless Entry System Operation
on page 2-5.
RIGHT REAR DOOR OPEN
This symbol appears with
this message.
This message will display when the passenger’s side
rear door is not closed completely. You should check
to make sure that the door is closed completely.
SERVICE AIR BAG
This message will display when there is a problem with
the airbag system. Have your vehicle serviced by your
GM dealer immediately. SeeAirbag Readiness Light
on page 3-58for more information.
SERVICE A/C SYSTEM
This message will display when the air delivery mode
door or the electronic sensors that control the air
conditioning and heating systems are no longer working.
Have the climate control system serviced by your
GM dealer if you notice a drop in heating and air
conditioning efficiency.
SERVICE BATTERY CHARGING
SYSTEM
This message will display when a problem with the
charging system has been detected. The charging
system light will also be displayed on the instrument
panel cluster. SeeCharging System Light on page 3-61
for more information. Have your vehicle serviced by
your GM dealer.
3-83

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 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
If an overheated engine condition exists and the
message ENGINE OVERHEATED 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 loss in power and
engine performance. This operating mode allows your
vehicle to be driven to a safe place in an emergency.
Driving extended miles (km) and/or towing a trailer 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 5-13.
5-27

Treadwear
The treadwear grade is a comparative rating based on
the wear rate of the tire when tested under controlled
conditions on a specied government test course.
For example, a tire graded 150 would wear one and
a half (1.5) times as well on the government course as
a tire graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from the norm
due to variations in driving habits, service practices, and
differences in road characteristics and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA, A,
B, and C. Those grades represent the tire’s ability
to stop on wet pavement as measured under controlled
conditions on specied government test surfaces of
asphalt and concrete. A tire marked C may have poor
traction performance.
Warning:The traction grade assigned to this tire is
based on straight-ahead braking traction tests, and does
not include acceleration, cornering, hydroplaning, or
peak traction characteristics.
Temperature – A, B, C
The temperature grades are A (the highest), B, and C,
representing the tire’s resistance to the generation
of heat and its ability to dissipate heat when tested
under controlled conditions on a specied indoor
laboratory test wheel. Sustained high temperature can
cause the material of the tire to degenerate and
reduce tire life, and excessive temperature can lead to
sudden tire failure. The grade C corresponds to a
level of performance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the
minimum required by law.
Warning:The temperature grade for this tire is
established for a tire that is properly inated and not
overloaded. Excessive speed, underination, or
excessive loading, either separately or in combination,
can cause heat buildup and possible tire failure.
5-68

Fuses Usage
F1 Spare
F2 Driver’s Side Low-Beam
F3 Passenger’s Side Low-Beam
F4 Airbag Ignition
F5 Engine Control Module
F6 Transaxle Ignition
F7 Spare
F8 Spare
F9 Spare
F10 High-Beam Headlamp
F11 High-Beam Headlamp
F12 Windshield Washer Pump
F13 Spare
F14Climate Controls, Instrument Panel
Cluster
F15 Spare
F16 Fog Lamps
F17 Horn
F18 Windshield Wiper
F19 Driver’s Side Corner Lamp
F20 Passenger’s Side Corner Lamp
F21 Oxygen Sensor
F22 PowertrainFuses Usage
F23Engine Control Module (ECM),
Crank
F24 Injector Coil
F25 Injector Coil
F26 Air Conditioning
F27 Air Solenoid
F28Engine Control Module, Transaxle
Control Module (ECM/TCM)
F29 Spare
F30 Spare
F31 Spare
F32 Spare
J-Case Fuse Usage
JC1 Heated Windshield Washer
JC2 Cooling Fan 1
JC3 Spare
JC4 Crank
JC5 Cooling Fan 2
JC6 Anti-lock Brake System 2
JC7 Anti-lock Brake System 1
JC8 Air Pump
5-95

J-CaseFuses Usage
JC1 Climate Control Fan
JC2 Rear Defogger (Option)
JC3Automatic Leveling
Control/Compressor
Fuses Usage
F1 Amplier
F2 Navigation (Option)
Fuses Usage
F3 Interior Lamps
F4Courtesy/Passenger Side Front Turn
Signal
F5 Canister Vent
F6Electronic Suspension Control
(Option)
F7Automatic Leveling Control Module
(Option)
F8 Rear Seat Lumbar (Option)
5-98

Fuses Usage
F9 Door Unlatch (Option)
F10 Switch Dimmer
F11 Fuel Pump
F12 Body Control Module Logic
F13 Airbag
F14 Auxiliary Power Outlets
F15 Driver’s Side Turn Signal
F16 Passenger Side Rear Turn Signal
F17 Not Used
F18Center High-Mounted Stoplamp,
Back-up Lamps
F19 Rear Door Locks
F20 Stoplamp (Option)
F21 Radio
F22 OnStar
®(Option)
F23Auxiliary Power Outlet, Cigarette
Lighter, Console
F24 Driver Door Module
F25 Passenger Door Module
F26 Trunk Release (Option)
F27 Heated/Cooled Seats (Option)
F28Engine Control Module,
Transmission Control Module
(ECM/TCM)
Fuses Usage
F29 Regulated Voltage Control Sense
F30 Not Used
F31 Instrument Panel Harness Module
F32 Rear Heated Seats (Option)
F33 Not Used
F34 Steering Wheel Illumination
F35 Body Harness Module
F36Memory Seat Module Logic, Right
Front Massage (Option)
F37 Object Detection Sensor
F38 Sunroof
F40 Shifter Solenoid (Option)
F41Retained Accessory Power,
Miscellaneous
F42 Driver’s Side Park Lamp
F43 Passenger’s Side Park Lamp
F44 Heated Steering Wheel (Option)
F45 Rear Climate Control
F46 Not Used
F47Heated/Cooled Seats, Ignition 3
(Option)
F48 Ignition Switch
F49 Not Used
5-99