2009 CADILLAC CTS battery replacement

Remote Keyless Entry (RKE)
System
If this vehicle has the Remote Keyless Entry (RKE)
system, it operates on a radio frequency subject
to Federal Communications Commission (FCC) Rules
and with Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.
If there is a decrease in the RKE operating range,
try this:
Check the distance. The transmitter may be too far
from the vehicle. Stand closer during rainy or
snowy weather.
Check the location. Other vehicles or objects may be
blocking the signal. Take a few steps to the left or
right, hold the transmitter higher, and try again.
Check the transmitter’s battery. See “Battery
Replacement” later in this section.
If the transmitter is still not working correctly, see
your dealer/retailer or a qualied technician for
service.
2-5

Programming Transmitters to the
Vehicle
Only RKE transmitters programmed to the vehicle will
work. If a transmitter is lost or stolen, a replacement
can be purchased and programmed through your
dealer/retailer. When the replacement transmitter is
programmed to the vehicle, all remaining transmitters
must also be programmed. Any lost or stolen transmitters
no longer work once the new transmitter is programmed.
Each vehicle can have up to eight transmitters
programmed to it. See “Relearn Remote Key”
underDIC Operation and Displays on page 3-51.
Battery Replacement
Replace the battery if the Replace Battery In Remote
Key message displays in the DIC. See “Replace Battery
In Remote Key” underDIC Warnings and Messages
on page 3-58for additional information.
Notice:When replacing the battery, do not touch
any of the circuitry on the transmitter. Static
from your body could damage the transmitter.To replace the battery:
1. Separate the transmitter with a at, thin object
inserted into the notch, located above the
metal base.
2. Remove the old battery. Do not use a metal object.
3. Insert the new battery, positive side facing up.
Replace with a CR2032 or equivalent battery.
4. Snap the transmitter back together.
2-7

Keyless Access System
Your vehicle may have a Keyless Access System that
operates on a radio frequency subject to Federal
Communications Commission (FCC) Rules and with
Industry Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation.
This device complies with RSS-210 of Industry Canada.
Operation is subject to the following two conditions:
1. This device may not cause interference.
2. This device must accept any interference received,
including interference that may cause undesired
operation of the device.
Changes or modications to this system by other than
an authorized service facility could void authorization to
use this equipment.If you ever notice a decrease in the keyless access
transmitter range, try doing one of the following:Check the distance. You may be too far from your
vehicle. You may need to stand closer during rainy or
snowy weather.
Check the location. Other vehicles or objects may be
blocking the signal. Take a few steps to the left or
right, hold the transmitter higher, and try again.
Check to determine if battery replacement is
necessary. See “Battery Replacement” under
Keyless Access System Operation on page 2-8.
Check to make sure that an electronic device such
as a cellular phone or lap top computer is not causing
interference.
If you are still having trouble, see your dealer/retailer
or a qualied technician for service.
Keyless Access System Operation
The Keyless Access System transmitter functions
will work up to 195 feet (60 m) away from the vehicle.
The Keyless Access System lets you lock and unlock the
doors and access the trunk without removing the remote
transmitter from your pocket, purse, briefcase, etc. The
keyless access transmitter must be within 3 feet (1 m) of
the door or trunk being opened.
2-8

Starting the Vehicle with a Low
Transmitter Battery
Replace the battery if the Replace Battery In Remote
Key message displays in the DIC. See “Replace Battery
In Remote Key” underDIC Warnings and Messages
on page 3-58for additional information.
If the transmitter battery is weak, the DIC may display
Electronic Key Not Detected when you try to start the
vehicle. To start the vehicle, place the transmitter in the
center console storage area transmitter pocket with the
buttons facing to the front of the vehicle. Then, with the
vehicle in P (Park) or N (Neutral), press the brake pedal
and the ignition control knob. SeeStarting the Engine on
page 2-33, for additional information about the vehicle’s
electronic keyless ignition with push start. Replace the
transmitter battery as soon as possible.
Battery Replacement
Notice:When replacing the battery, do not touch
any of the circuitry on the transmitter. Static
from your body could damage the transmitter.
1. Separate the transmitter with a at, thin object
inserted into the slot on the side or back of the
transmitter.
2. Remove the old battery. Do not use a metal object.
3. Insert the new battery, positive side facing down.
Replace with a CR2032 or equivalent battery.
4. Snap the transmitter back together.
2-13

Retained Accessory Power (RAP)
These vehicle accessories can be used for up to
10 minutes after the engine is turned off:
Audio System
Power Windows
Sunroof (if equipped)
Power to the audio system will work up to 10 minutes or
until the driver door is opened. Power to the windows or
sunroof will work up to 10 minutes or until any door is
opened. For an additional 10 minutes of operation, close
all the doors and turn the key to ON/RUN and then back
to LOCK/OFF.
Starting the Engine
Place the transmission in the proper gear.
Automatic Transmission
Move the shift lever to P (Park) or N (Neutral). The
engine will not start in any other position. To restart
the engine when the vehicle is already moving, use
N (Neutral) only.If the vehicle has the keyless access system, put your
foot on the brake pedal and turn the ignition control knob
to the START position. When the engine begins cranking,
let go of the ignition control knob, it will return to the
ON/RUN position.
If the transmitter is not in the vehicle or something is
interfering with the transmitter, the Driver Information
Center (DIC) will display Electronic Key Not Detected.
SeeDIC Warnings and Messages on page 3-58for
more information.
If the battery in the keyless access transmitter needs
replacing, the DIC displays Replace Battery In Remote
Key. The vehicle can still be driven. See “Battery
Replacement” underKeyless Access System Operation
on page 2-8for more information.
Notice:Do not try to shift to P (Park) if the
vehicle is moving. If you do, you could damage
the transmission. Shift to P (Park) only when
the vehicle is stopped.Manual Transmission
The shift lever should be in neutral position and the
parking brake engaged. Hold the clutch pedal down to
the oor and start the engine. The vehicle will not start if
the clutch pedal is not all the way down.
2-33

Rainsense Wipers Active
If the vehicle has this feature, this message displays
while the Rainsense™ wipers are active. See
Rainsense™ Wipers on page 3-10for more information.
Ready To Learn Electronic Key # X
If the vehicle has the keyless access system, this
message displays while matching new transmitters to
the vehicle. SeeKeyless Access System Operation
on page 2-8for more information.
Release Park Brake Switch
For vehicles with the Electric Parking Brake, this
message displays if the Park Brake switch is pulled
while the vehicle is moving. SeeElectric Parking Brake
on page 2-44for more information.
Remote Key Learning Active
If the vehicle has the Remote Keyless Entry (RKE)
system, this message displays while matching
new transmitters to the vehicle. See “Matching
Transmitter(s) to Your Vehicle” underRemote Keyless
Entry (RKE) System Operation on page 2-6and
DIC Operation and Displays on page 3-51for more
information.
Replace Battery In Remote Key
This message displays when the battery in the Remote
Keyless Entry (RKE) or keyless access transmitter
needs to be replaced. To replace the battery, see
“Battery Replacement” underRemote Keyless Entry
(RKE) System Operation on page 2-6orKeyless Access
System Operation on page 2-8.
Right Rear Door Open
This message displays when the passenger side rear
door is not closed completely. Make sure that the door is
closed completely.
Rotate Control To Off Position
If the vehicle has the keyless access system,
this message displays when the ignition is in
ACC/ACCESSORY and the shift lever has just been
moved to P (Park). The message displays as a reminder
to turn the ignition off. To avoid draining the battery,
make sure the ignition is turned off before leaving
the vehicle.
Service Air Bag
This message displays when there is a problem with the
airbag system. Have the vehicle serviced by your
dealer/retailer immediately. SeeAirbag Readiness Light
on page 3-36for more information.
3-66

Service............................................................5-3
Accessories and Modications..........................5-3
California Proposition 65 Warning.....................5-4
California Perchlorate Materials Requirements.....5-4
Doing Your Own Service Work.........................5-4
Adding Equipment to the Outside of the
Vehicle......................................................5-5
Fuel................................................................5-5
Gasoline Octane............................................5-6
Gasoline Specications....................................5-6
California Fuel...............................................5-7
Additives.......................................................5-7
Fuels in Foreign Countries...............................5-8
Filling the Tank..............................................5-8
Filling a Portable Fuel Container.....................5-11
Checking Things Under the Hood....................5-12
Hood Release..............................................5-12
Engine Compartment Overview.......................5-14
Engine Oil...................................................5-18
Engine Oil Life System..................................5-21
Engine Cover...............................................5-23
Engine Air Cleaner/Filter................................5-25
Automatic Transmission Fluid.........................5-29
Manual Transmission Fluid.............................5-29
Hydraulic Clutch...........................................5-30
Cooling System............................................5-31
Engine Coolant.............................................5-32Coolant Surge Tank Pressure Cap..................5-37
Engine Overheating.......................................5-37
Overheated Engine Protection
Operating Mode.........................................5-39
Power Steering Fluid.....................................5-40
Windshield Washer Fluid................................5-41
Brakes........................................................5-42
Battery........................................................5-45
Jump Starting...............................................5-46
All-Wheel Drive..............................................5-51
Rear Axle.......................................................5-52
Headlamp Aiming...........................................5-53
Bulb Replacement..........................................5-57
High Intensity Discharge (HID) Lighting............5-57
Halogen Bulbs..............................................5-57
Front Turn Signal and Fog Lamps...................5-58
License Plate Lamp......................................5-59
Replacement Bulbs.......................................5-59
Windshield Wiper Blade Replacement..............5-59
Tires..............................................................5-61
Winter Tires.................................................5-62
Tire Sidewall Labeling...................................5-63
Tire Terminology and Denitions.....................5-66
Ination - Tire Pressure.................................5-69
High-Speed Operation...................................5-70
Tire Pressure Monitor System.........................5-71
Section 5 Service and Appearance Care
5-1

Replacing Brake System Parts
The braking system on a vehicle is complex. Its many
parts have to be of top quality and work well together if
the vehicle is to have really good braking. The vehicle
was designed and tested with top-quality brake parts.
When parts of the braking system are replaced — for
example, when the brake linings wear down and new
ones are installed — be sure to get new approved
replacement parts. If this is not done, the brakes might
not work properly. For example, if someone puts in brake
linings that are wrong for the vehicle, the balance
between the front and rear brakes can change — for the
worse. The braking performance expected can change in
many other ways if the wrong replacement brake parts
are installed.
Battery
This vehicle has a maintenance free battery. It is located
in the trunk, behind the trim panel, on the passenger side
of the vehicle. When it is time for a new battery, see your
dealer/retailer for one that has the replacement number
shown on the original battery’s label.Warning:Battery posts, terminals, and related
accessories contain lead and lead compounds,
chemicals known to the State of California to cause
cancer and reproductive harm. Wash hands after
handling.
After a power loss, such as disconnecting the battery
or removing the maxi fuses in the power distribution
fuse block, the following steps must be performed
to calibrate the electronic throttle control. If this is
not done, the engine will not run properly.
1. Turn the ignition to ON/RUN. Do not start the
engine.
2. Leave the ignition in ON/RUN for at least three
minutes so that the electronic throttle control will
cycle and re-learn its home position.
3. Turn the ignition to LOCK/OFF.
4. Start and run the engine for at least 30 seconds.
5-45