engine CADILLAC CTS 2007 1.G Service Manual

Transmission Fluid Hot Message
When you see this
ashing symbol, the
transmission uid
temperature is high
(290°F (143°C)).
To acknowledge this warning, press either button
on the outboard switch on the left spoke of the
steering wheel. After you press this button, the
warning will redisplay every 10 minutes until the
temperature returns to the normal operating range.
If this message appears, you may continue to drive
at a slower speed while monitoring the transmission
uid temperature. Ideally, the transmission oil
temperature should not rise above 265°F (129°C). If
you regularly experience temperatures above this
limit due to high performance operation, it is
recommended to use an auxiliary uid cooler for the
transmission and differential. See your dealer for
details. If this warning is displayed during normal
vehicle operation on at roads, your vehicle may
need service. See your dealer for an inspection.
SeeDIC Warnings and Messages on page 232and
Manual Transmission Fluid on page 354for more
information.
Hot Coolant Temperature Warning
Message
When you see this
ashing symbol, the
engine coolant
temperature is high
(257°F (125°C)).
To acknowledge this warning, press either button
on the outboard switch on the left spoke of the
steering wheel. After you press a button, this
warning will come on every 10 minutes until the
temperature returns to the normal operating range.
Driving aggressively or driving on long hills can
cause the engine coolant temperature to be higher
than normal. The Engine Coolant Temperature
Warning Light should also come on. SeeEngine
Coolant Temperature Warning Light (CTS) on
page 207for more information. If this warning is
displayed during normal vehicle operation on
at roads, your vehicle may need service.
See your dealer for an inspection.
219

Check Engine Oil Pressure Message
Your vehicle may have
this feature. When you
see this ashing
symbol, the engine oil
pressure is low.
To acknowledge this warning, press either button
on the outboard switch on the left spoke of the
steering wheel. After you press this button,
the warning will redisplay every 10 minutes until
the pressure returns to the normal operating
range. Oil pressure should be 20 to 80 psi
(140 to 550 kPa). In certain situations such as
long, extended idles on hot days, it could read as
low as 6 psi (40 kPa) and still be considered
normal. It may vary with engine speed, outside
temperature and oil viscosity. The Oil Pressure
Light should also come on. SeeOil Pressure Light
on page 212for more information.
Oil Temperature Warning Message
When you see this
ashing symbol, the
engine oil temperature
is high.
To acknowledge this warning, press either button
on the outboard switch on the left spoke of the
steering wheel. After you press a button, the
warning will come on every 10 minutes until the
temperature returns to the normal operating range.
Driving aggressively or driving on long hills can
cause the engine oil temperature to be higher than
normal. If this warning is displayed during
normal vehicle operation on at roads, your vehicle
may need service. See your dealer for an
inspection. SeeEngine Oil on page 346for more
information.
220

Vehicle Information Menu
To access this menu, press the up or down arrow
on the INFO switch located to the right of the
display.
The following items are available when the ignition
is in ON. These items will not be available when
the ignition is in ACCESSORY. The tire pressure
menu items are only available if your vehicle
has the Tire Pressure Monitor (TPM) system:
OUTSIDE TEMP
MI TRIP A (KM TRIP A)*
MI TRIP B (KM TRIP B)*
MILES RANGE (KM RANGE)
MPG AVG (L/100 KM AVG)*
MPG INST (L/100 KM INST)
GAL FUEL USED (L FUEL USED)*
AVG MPH (AVG KM/H)*
TIMER*
BATTERY VOLTS
ENGINE OIL LIFE*
TRANS FLUID LIFE* (Automatic
Transmission Only)
PSI LF TIRE (KPA LF TIRE)
PSI RF TIRE (KPA RF TIRE)
PSI RR TIRE (KPA RR TIRE)
PSI LR TIRE (KPA LR TIRE)
BLANK LINE
*These items can be reset. Each one must be
reset individually. For a detailed description of the
menu items and how to reset them, see “Vehicle
Information Menu Item Descriptions” later in
this section.
You can view any of these items at any time, but
only one item can be displayed at a time.
224

GAL FUEL USED (L FUEL USED):If you select
this item, the number of gallons or liters of fuel
used since the last reset of this menu item
is displayed.
To reset GAL FUEL USED (L FUEL USED), press
the CLR button located to the right of the screen.
The display will return to zero.
AVG MPH (AVG KM/H):If you select this item,
the average speed of the vehicle is displayed
in miles per hour (mph) or kilometers per
hour (km/h). This average is calculated based on
the various vehicle speeds recorded since the
last reset of this menu item.
To reset AVG MPH (AVG KM/H), press the
CLR button located to the right of the screen.
The display will return to zero.
TIMER:If you select this item, a timing feature is
displayed. The timer functions like a stopwatch
in that you can record the time it takes to
travel from one point to another.
To turn on the timer, press the CLR button located
to the right of the screen once. The display will
read 00:00:00 TIMER ON and begin counting.To turn off the timer, press the CLR button again.
When the timer is off, the display will show the
timer value and TIMER OFF. The timing feature
will stop.
To reset the timer, turn off the timer and then
press and hold the CLR button. The display will
return to zero.
BATTERY VOLTS:If you select this item, the
current battery voltage is displayed. If the voltage
is in the normal range, the display will have
OK after it. For example, the display may read
13.2 BATTERY VOLTS OK.
If there is a problem with the battery charging
system, there are four possible DIC messages that
may be displayed. SeeDIC Warnings and
Messages on page 232for more information.
ENGINE OIL LIFE:If you select this item,
the percentage of remaining oil life is displayed.
If you see 99% ENGINE OIL LIFE on the display,
that means that 99% of the current oil life remains.
226

When the oil life is depleted, the Change Engine
Oil message will appear on the display. See
your dealer for service. In addition to the engine
oil life system monitoring the oil life, additional
maintenance is recommended in the Maintenance
Schedule in this manual. SeeScheduled
Maintenance on page 462andEngine Oil on
page 346for more information.
When you reset the Change Engine Oil message
by clearing it from the display, you still must reset
the engine oil life system separately. For more
information on resetting the engine oil life system,
see “How to Reset the Engine Oil Life System
and the Oil Life Indicator” underEngine Oil
Life System on page 349. If you clear the Change
Engine Oil message from the display, it will not
re-appear.
TRANS FLUID LIFE (Automatic Transmission):
If you select this item, the percentage of
remaining transmission uid life is displayed.
If you see 99% TRANS FLUID LIFE on the display,
that means that 99% of the current transmission
uid life remains.When the transmission uid life is depleted, the
Change Trans Fluid message will appear on
the display. You should change the transmission
uid as soon as possible. Be sure to keep a written
record of the mileage and date of the uid
change so you will have it for future reference.
SeeScheduled Maintenance on page 462
andRecommended Fluids and Lubricants on
page 473for more information.
When you reset the Change Trans Fluid message
by clearing it from the display, you still must
reset the transmission uid life monitor separately.
For more information on resetting the transmission
uid life monitor, seeAutomatic Transmission
Fluid on page 353.
LF TIRE:If you select this item, the driver’s side
front tire pressure will be displayed. If the tire
pressure is low, LOW will be displayed with this
item. The pressure can be displayed in pounds per
square inch (PSI) or kilopascals (KPA). To change
the units, seeDIC Main Menu on page 228
DIC Main Menu.
227

Battery Saver Active
This message appears when the system detects
that the battery voltage is dropping beyond a
reasonable level. The battery saver system will
start reducing certain features of the vehicle which
you may be able to notice. At the point that the
features are disabled, this message is displayed. It
means that the vehicle is trying to save the
charge in the battery.
Turn off all unnecessary accessories to allow the
battery to recharge.
The normal battery voltage range is
11.5 to 15.5 volts. You can monitor battery voltage
on the DIC by pressing the INFO button until
BATTERY VOLTS appears.
Battery Voltage High
This message indicates that the electrical charging
system is overcharging the battery. When the
system detects that the battery voltage is above
an estimated 16 volts, this message will be
displayed.To reduce the charging overload, use the vehicle’s
accessories. Turn on the exterior lamps and
radio, set the climate control on AUTO and the fan
speed on the highest setting, and turn the rear
window defogger on.
The normal battery voltage range is
11.5 to 15.5 volts when the engine is running. You
can monitor battery voltage on the DIC by pressing
the INFO button until BATTERY VOLTS appears.
Battery Voltage Low
This message will appear when the electrical
system is charging less than 10 volts or if
the battery has been drained.
If this message appears immediately after starting
the engine, it is possible that the generator can
still recharge the battery. The battery should
recharge while driving but may take a few hours to
do so. Consider using an auxiliary charger to
boost the battery after returning home or to a nal
destination. Make sure you follow the
manufacturer’s instructions.
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Change Engine Oil
This message indicates that the life of the engine
oil has expired and it should be changed and
that your vehicle is due for service. See your
dealer. SeeEngine Oil on page 346and
Scheduled Maintenance on page 462for more
information.
When you reset the Change Engine Oil message
by clearing it from the display, you still must
reset the engine oil life system separately. For
more information on resetting the engine oil
life system, seeEngine Oil Life System on
page 349. If you clear this message from the
display, it will not re-appear.
Change Trans (Transmission) Fluid
(Automatic Transmission)
This message indicates that the life of the
transmission uid has expired and it should be
changed. SeeScheduled Maintenance on
page 462andRecommended Fluids and
Lubricants on page 473for the proper uid and
change intervals.When you reset the Change Trans Fluid message
by clearing it from the display, you still must
reset the transmission uid life monitor separately.
For more information on resetting the transmission
uid life monitor, seeAutomatic Transmission
Fluid on page 353.
Check Brake Fluid
This message will display if the ignition is in ON to
inform the driver that the brake uid level is low.
Have the brake system serviced by your dealer as
soon as possible. SeeBrake System Warning
Light on page 205andBrakes on page 371
for more information.
Check Gas Cap
When this message appears on the display, the
gas cap has not been fully tightened. You
should recheck the gas cap to ensure that it is on
and tightened properly. See “If the Light Is On
Steady” underMalfunction Indicator Lamp
on page 209for more information.
235

Check Tire Pressure
If your vehicle has a Tire Pressure Monitor (TPM)
system, this message indicates that one or
more of the vehicle’s tires are low. SeeStatus of
Vehicle Systems on page 223for information
on checking your vehicle’s tire pressures. Also,
seeTire Pressure Monitor System on page 405
andInation - Tire Pressure on page 402for
more information.
Check Washer Fluid
When this message appears on the display, it
means that your vehicle is low on windshield
washer uid. You should rell the windshield
washer uid reservoir as soon as possible. See
Windshield Washer Fluid on page 369for
more information.
Competitive Driving (CTS-V)
When competitive driving mode is turned on with
the TC (traction control) button, this message
will be displayed on the DIC. The TC light will be
on when the competitive driving mode is on.
The Traction Control System (TCS) will not
operate while in competitive driving mode. You
should adjust your driving accordingly. Seethe CTS-V portion ofTraction Control System
(TCS) (CTS) on page 293orTraction Control
System (TCS) (CTS-V) on page 295for more
information.
Driver Door Ajar
When this message appears on the display, it
means that the driver’s door was not closed
completely. You should make sure that the driver’s
door is closed completely.
Engine Coolant Hot – AC
(Air Conditioning) Off
This message displays when the engine coolant
becomes hotter than the normal operating
temperature. To avoid added strain on a hot
engine, the air conditioning compressor is
automatically turned off. When the coolant
temperature returns to normal, the air conditioning
compressor will turn 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 or
transmission.
236

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

Ice Possible
This message appears when the outside
temperature is cold enough to create icy road
conditions.
Left Rear Door Ajar
When this message appears on the display, it
means that the driver’s side rear door was
not closed completely. You should make sure that
the door is closed completely.
Oil Pressure Low – Stop Engine
Notice:If you drive your vehicle while the
engine oil pressure is low, severe engine
damage may occur. If a low oil pressure
warning appears on the instrument panel
cluster and/or DIC, stop the vehicle as soon as
possible. Do not drive the vehicle until the
cause of the low oil pressure is corrected. See
Engine Oil on page 346for more information.
Passenger Door Ajar
When this message appears on the display, it
means that the passenger’s side front door was
not closed completely. You should make sure that
the door is closed completely.
Right Rear Door Ajar
When this message appears on the display, it
means that the passenger’s side rear door was not
closed completely. You should check to make
sure that the door is closed completely.
Service AC (Air Conditioning) System
This message appears when the electronic
sensors that control the air conditioning and
heating systems are no longer working. Have the
climate control system serviced by your dealer
if you notice a drop in heating and air conditioning
efficiency.
Service Air Bag
There is a problem with the airbag system when
this message appears. Have your vehicle serviced
by your dealer immediately. SeeAirbag Readiness
Light on page 201for more information.
Service Brake Assist
This message will display when a problem with
the panic brake assist system has been detected.
Have your vehicle serviced by your dealer.
238