2005 CADILLAC XLR ECU

{CAUTION:
If the airbag readiness light ever comes on
when you have turned off the airbags, it means
that something may be wrong with the airbag
system. The passenger’s airbags could inate
even though the switch is off. If this ever
happens, do not let anyone whom the national
government has identied as a member of a
passenger airbag risk group sit in the
passenger’s position (for example, do not
secure a rear-facing child restraint in your
vehicle) until you have your vehicle serviced.
SeeAirbag Off Switch on page 1-44.
Voltmeter Gage
When the vehicle is in
accessory mode, the
voltmeter shows the
voltage output of your
battery. When the engine
is running, it shows
the voltage output of the
charging system.
The reading will change as the rate of charge changes
(with engine speed, for example), but if the voltmeter
reads at 9 volts or below, your instrument panel cluster
and other systems may shut down. The Driver
Information Center (DIC) will read LOW VOLTAGE
when your vehicle is at 10 volts or below. Have
it checked right away. Driving with the voltmeter reading
at 10 volts or below could drain your battery and
disable your vehicle.
3-51

Security Light
For information regarding
this light, see
Theft-Deterrent Systems
on page 2-19.
Fog Lamp Light
The fog lamps light will
come on when the fog
lamps are in use.
The light will go out when the fog lamps are turned off.
SeeFog Lamps on page 3-31for more information.
Lights On Reminder
This light comes on
whenever the headlamps
are on.
Highbeam On Light
This light will illuminate
when the headlamp high
beams are in use.
SeeHeadlamp High/Low-Beam Changer on page 3-8.
United States Only
3-59

DIC Warnings and Messages
These messages will appear if there is a problem
sensed in one of your vehicle’s systems. You must then
press RESET to clear the display screen for further
use. However, be sure to take any message that
appears on the display screen seriously and remember
that pressing the RESET button will only make the
message disappear, not the problem.
DIC messages can also be displayed in English,
French, German, Italian and Spanish.
ABS ACTIVE:When your anti-lock system is adjusting
brake pressure to help avoid a braking skid, the ABS
ACTIVE message will be displayed.
Slippery road conditions may exist if this message is
displayed, so adjust your driving accordingly. The
message may stay on for a few seconds after the
system stops adjusting brake pressure.
BATTERY SAVER ACTIVE:This message is displayed
when the vehicle has detected that the battery voltage
is dropping beyond a reasonable point. The battery
saver system will start reducing certain features of the
vehicle that you may not be able to notice. At the
point that features are disabled, this message is
displayed. It means that the vehicle is trying to save the
charge in the battery. Turn off unnecessary accessories
to allow the battery to recharge.CHANGE OIL NOW:This means that the life of the
engine oil has expired. SeeScheduled Maintenance on
page 7-4. After an oil change, the Oil Life Indicator
must be reset. SeeOil Life Indicator on page 3-77and
Engine Oil Life System on page 6-16.
CHARGE SYSTEM FAULT:This message will display
when a problem with the charging system has been
detected. Have your vehicle serviced by your GM dealer.
CHECK GAS CAP:This message will appear if the
gas cap has not been fully tightened. You should
recheck your gas cap to ensure that it is on properly.
CLEAN RADAR CRUISE:This message indicates the
ACC system is disabled because the radar is blocked and
cannot detect vehicles in your path. It may also activate
during heavy rain or due to road spray. To clean the
system, see “Adaptive Cruise Control (ACC)” underTurn
Signal/Multifunction Lever on page 3-7.
CLOSE CARGO DIVIDER:This message indicates that
the cargo divider is not in place. Open the trunk and
make sure the cargo divider is secure and no objects are
on the divider. SeeRear Storage Area on page 2-44
for more information.
3-64

TOP INOP – VALET ON:This message will display
when the retractable hardtop button is pressed and the
valet switch is on. Turn off the valet switch before
using the retractable hardtop.
TOP INOP OUT OF PARK:This message will display if
the retractable hardtop button is pressed while the
vehicle is not in PARK (P).
TOP MOTOR OVER TEMP:This message will display
when the retractable hardtop button is pressed and
the hardtop pump motor temperature is over
221°F (105°C). Wait for the hardtop pump motor to cool
down before using the retractable hardtop.
TOP NOT SECURE:This message will display when
the retractable hardtop button is released before the top
open or close operation is complete. Press and hold
the retractable hardtop button to fully open or close
the top.
TRAC SYSTEM ACTIVE:When your traction control
system is limiting wheel spin, the TRACTION SYSTEM
ACTIVE message will be displayed. Slippery road
conditions may exist if this message is displayed, so
adjust your driving accordingly. This message will stay
on for a few seconds after the traction control system
stops limited wheel spin.TRAC/STABILITRAK OFF:This message indicates
that both the Traction Control System (TCS) and
StabiliTrak
®are off. The message will remain until the
systems are turned on again.
TRAC/STABILITRAK ON:This message indicates that
both the Traction Control System (TCS) and the
StabiliTrak
®are on.
TRACTION SYSTEM OFF:This message indicates
that the Traction Control System (TCS) is off but
StabiliTrak
®remains on.
TRACTION SYSTEM ON:This message indicates that
the Traction Control System (TCS) is on, but
StabiliTrak
®is off.
TRUNK AJAR:This message indicates that the trunk is
open while the vehicle is running and not in PARK (P).
WAIT FOR STABILITRAK:This message will be
displayed after driving 19 mph (30 km/h) for 10 seconds
if the steering is not centered. StabiliTrak
®is not
available until the steering centers itself and the
STABILITRAK READY message is displayed in the DIC.
3-71

Radio Display Message Condition Action Required
Not Found No channel available for
the chosen categoryThere are no channels available for the category you
selected. Your system is working properly.
No Information No Text/Informational
message availableNo text or informational messages are available at this time
on this channel. Your system is working properly.
XM Theftlocked Theft lock active The XM receiver in your vehicle may have previously been
in another vehicle. For security purposes, XM receivers
cannot be swapped between vehicles. If you receive this
message after having your vehicle serviced, check with the
servicing facility.
XM Radio ID Radio ID label
(channel 0)If you tune to channel 0, you will see this message
alternating with your XM Radio 8 digit radio ID label. This
label is needed to activate your service.
Unknown Radio ID not known
(should only be if
hardware failure)If you receive this message when you tune to channel 0,
you may have a receiver fault. Consult with your dealer.
Check XM Receivr Hardware failure If this message does not clear within a short period of time,
your receiver may have a fault. Consult with your retail
location.
4-60

Winter Driving
Here are some tips for winter driving:
Have your vehicle in good shape for winter.
You may want to put winter emergency supplies in
your vehicle.
Also seeTires on page 6-46.Include an ice scraper, a small brush or broom, a
supply of windshield washer uid, a rag, some winter
outer clothing, a small shovel, a ashlight, a red
cloth, and a couple of reective warning triangles. And,
if you will be driving under severe conditions, include
a small bag of sand, a piece of old carpet, or a couple of
burlap bags to help provide traction. Be sure you
properly secure these items in your vehicle.
5-25

{CAUTION:
Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.
Put things in the rear area of your vehicle.
Try to spread the weight evenly.
Never stack heavier things, like suitcases,
inside the vehicle so that some of them
are above the tops of the seats.
Do not leave an unsecured child restraint
in your vehicle.
When you carry something inside the
vehicle, secure it whenever you can.
Towing
Towing Your Vehicle
Consult your dealer or a professional towing service if
you need to have your disabled vehicle towed. See
Roadside Service on page 8-6.
Recreational Vehicle Towing
Recreational vehicle towing means towing your vehicle
behind another vehicle — such as behind a motorhome.
The two most common types of recreational vehicle
towing are known as “dinghy towing” (towing your vehicle
with all four wheels on the ground) and “dolly towing”
(towing your vehicle with two wheels on the ground and
two wheels up on a device known as a “dolly”).
Your vehicle was not designed to be towed with any of
its wheels on the ground. If your vehicle must be
towed, see “Towing Your Vehicle” earlier in this section.
Towing a Trailer
Your XLR is neither designed nor intended to tow
a trailer.
5-35

Adding Coolant
If you need more coolant, add the proper DEX-COOL®
coolant mixtureat the 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, press down and turn
it clockwise (right) until you hear a clicking sound.
Make sure you fully install the cap.
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 6-12for
information on location.
Engine Overheating
You will nd a COOLANT OVER TEMP message or an
ENGINE HOT, STOP ENGINE message displayed in the
Driver Information Center (DIC). SeeDIC Warnings and
Messages on page 3-64. You will also hear a chime.
There is also an engine coolant temperature gage on the
instrument panel cluster. SeeEngine Coolant
Temperature Gage on page 3-54.
6-23