2010 CADILLAC DTS brake light

Using ABS
Do not pump the brakes. Just hold the brake pedaldown firmly and let antilock work. The antilock pump ormotor operating might be heard and the brake pedalmight be felt to pulsate, but this is normal.
Braking in Emergencies
ABS allows the driver to steer and brake at the sametime. In many emergencies, steering can help more thaneven the very best braking.
Brake Assist
This vehicle has a Brake Assist feature designed toassist the driver in stopping or decreasing vehicle speedin emergency driving conditions. This feature uses thestability system hydraulic brake control module tosupplement the power brake system under conditionswhere the driver has quickly and forcefully appliedthe brake pedal in an attempt to quickly stop or slowdown the vehicle. The stability system hydraulicbrake control module increases brake pressure at eachcorner of the vehicle until the ABS activates. Minorbrake pedal pulsations or pedal movement during thistime is normal and the driver should continue toapply the brake pedal as the driving situation dictatesThe Brake Assist feature will automatically disengagewhen the brake pedal is released or brake pedalpressure is quickly decreased.
StabiliTrak®System
The vehicle may have the StabiliTrak system whichcombines antilock brake, traction and stability controlsystems and helps the driver maintain directional controlof the vehicle in most driving conditions. This isaccomplished by selectively applying any one of thevehicle’s brakes and reducing engine power.
The StabiliTrak system comes on automaticallywhenever the vehicle is started. The system cannot beturned off.
This light will flash whenthe system is operating.
The STABILITRAK NOT READY message may bedisplayed in the Driver Information Center (DIC) and theTraction Control System (TCS)/StabiliTrak warninglight on the instrument panel cluster comes on after firstdriving the vehicle and exceeding 19 mph (30 km/h)for 30 seconds. The StabiliTrak system is off untilthe light has turned off. This could take up to 15 minutes.
5-5

The TCS/StabiliTrak warning light on the instrumentpanel cluster will flash when the system is operating.SeeTraction Control System (TCS) Warning Lighton page 4-54andStabiliTrak®Indicator Light onpage 4-54for more information. The system may beheard or felt while it is working. This is normal.
The SERVICE STABILITRAK message is displayed andthe TCS/StabiliTrak warning light on the instrumentpanel cluster comes on if there is a problem with thesystem. When this light and the SERVICESTABILITRAK message are on, the system is notworking. Adjust your driving accordingly.
Traction Control System (TCS)
The vehicle has a Traction Control System (TCS) thatlimits wheel spin. This is especially useful in slippery roadconditions. The system operates only if it senses that thefront wheels are spinning too much or beginning to losetraction. When this happens, the system works the frontbrakes and reduces engine power (by closing the throttleand managing engine spark) to limit wheel spin.
The TCS and StabiliTrak®
light will flash when thesystem is limitingwheel spin.
The system may be heard or felt while it is working, butthis is normal. SeeTraction Control System (TCS)Warning Light on page 4-54for more information.
If the vehicle is in cruise control when TCS begins tolimit wheel spin, the cruise control will automaticallydisengage. The cruise control may be re-engaged whenroad conditions allow. SeeCruise Control on page 4-12.
The SERVICE TRACTION CONTROL message inthe DIC and the TCS/StabiliTrak warning light comes onif there is a problem with the traction control system.SeeDIC Warnings and Messages on page 4-67.
When this light and the SERVICE TRACTIONCONTROL message are on, the system will not limitwheel spin. Adjust your driving accordingly.
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To turn the system off oron, press and release thisbutton located in frontof the shift lever.
TCS automatically comes on whenever the vehicle isstarted. To limit wheel spin, especially in slipperyroad conditions, always leave the system turned on.TCS can be turned off if needed.
The system can be turned on or off at any time bypressing the TCS button. The DIC will displayTRACTION CONTROL OFF when the button is pressed,and part of the traction control system is disabled.The vehicle will still have brake-traction control, but willnot be able to use the engine speed managementsystem. System noises may be heard as a result of thebrake-traction control working. If the controller detectsexcessive wheel spin in this mode, the TCS/StabiliTraklight may blink.
It is recommended to leave the system on for normaldriving conditions, but it may be necessary to turnthe system off if the vehicle is stuck in sand, mud, ice orsnow, and you want to “rock” the vehicle to attempt tofree it. SeeIf Your Vehicle is Stuck in Sand, Mud, Ice, orSnow on page 5-17.
Adding non-dealer/non-retailer accessories can affectthe vehicle’s performance. SeeAccessories andModifications on page 6-3for more information.
Magnetic Ride Control™
The vehicle may have Magnetic Ride Control thatautomatically adjusts the ride of the vehicle. Thecontroller receives input from the system to determinethe proper ride. If the controller detects a problem withinthe system, the Driver Information Center (DIC)displays a SERVICE SUSPENSION SYS message.SeeDIC Warnings and Messages on page 4-67for more information. If this message appears, have thevehicle serviced at your dealer/retailer.
Electronically Controlled Air Ride
Suspension
Professional Vehicles may have Electronically ControlledAir Suspension. The air ride controller receives inputfrom the system to determine the proper ride. Ifthe controller detects a problem with the system, theDIC will display a SERVICE SUSPENSION SYSmessage. If this message appears, have the vehicleserviced at your dealer/retailer.
5-7

It is important to slow down on slippery surfacesbecause stopping distance will be longer and vehiclecontrol more limited.
While driving on a surface with reduced traction, try yourbest to avoid sudden steering, acceleration, or braking,including reducing vehicle speed by shifting to a lowergear. Any sudden changes could cause the tires to slide.You may not realize the surface is slippery until thevehicle is skidding. Learn to recognize warningclues — such as enough water, ice, or packed snow onthe road to make a mirrored surface — and slow downwhen you have any doubt.
Remember: Any Antilock Brake System (ABS) helpsavoid only the braking skid.
Driving at Night
Night driving is more dangerous than day driving becausesome drivers are likely to be impaired — by alcohol ordrugs, with night vision problems, or by fatigue.
Night driving tips include:
•Drive defensively.
•Do not drink and drive.
•Reduce headlamp glare by adjusting the inside
rearview mirror.
•Slow down and keep more space between you and
other vehicles because headlamps can only light upso much road ahead.
•Watch for animals.
•When tired, pull off the road.
•Do not wear sunglasses.
•Avoid staring directly into approaching headlamps.
•Keep the windshield and all glass on your vehicle
clean — inside and out.
•Keep your eyes moving, especially during turns
or curves.
No one can see as well at night as in the daytime.But, as we get older, these differences increase.A 50-year-old driver might need at least twice as muchlight to see the same thing at night as a 20-year-old.
5-11

Driving in Rain and on Wet Roads
Rain and wet roads can reduce vehicle tractionand affect your ability to stop and accelerate. Alwaysdrive slower in these types of driving conditionsand avoid driving through large puddles anddeep-standing or flowing water.
{WARNING:
Wet brakes can cause crashes. They might not
work as well in a quick stop and could cause
pulling to one side. You could lose control of
the vehicle.
After driving through a large puddle of water or a
car/vehicle wash, lightly apply the brake pedal until
the brakes work normally.
Flowing or rushing water creates strong forces.
Driving through flowing water could cause your
vehicle to be carried away. If this happens, you
and other vehicle occupants could drown. Do not
ignore police warnings and be very cautious about
trying to drive through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can build up underyour vehicle’s tires so they actually ride on thewater. This can happen if the road is wet enough andyou are going fast enough. When your vehicle ishydroplaning, it has little or no contact with the road.
There is no hard and fast rule about hydroplaning.The best advice is to slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet weather driving tipsinclude:
•Allow extra following distance.
•Pass with caution.
•Keep windshield wiping equipment in good shape.
•Keep the windshield washer fluid reservoir filled.
•Have good tires with proper tread depth. SeeTires
on page 6-46.
•Turn off cruise control.
5-12

Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3Accessories and Modifications . . . . . . . . . . . . . . . . . . . . . . . . . .6-3California Proposition 65 Warning . . . . . . . . . . . . . . . . . . . . .6-4California Perchlorate Materials Requirements . . . . .6-4Doing Your Own Service Work . . . . . . . . . . . . . . . . . . . . . . . . .6-4Adding Equipment to the Outsideof the Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5
Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5Gasoline Octane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5Gasoline Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6California Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6Fuels in Foreign Countries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7Filling the Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . . .6-10
Checking Things Under the Hood. . . . . . . . . . . . . . . . . . . .6-10Hood Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-11Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . .6-12Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-13Engine Oil Life System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-16Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-17Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . .6-19Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-22Engine Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-23Engine Overheating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-27
Overheated Engine ProtectionOperating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-29Power Steering Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-30Windshield Washer Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-31Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-32Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-34Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-36
Headlamp Aiming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-40
Bulb Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-43High Intensity Discharge (HID) Lighting . . . . . . . . . . . .6-43
Windshield Wiper Blade Replacement. . . . . . . . . . . . . .6-44
Tires. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-46Tire Sidewall Labeling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-47Tire Terminology and Definitions . . . . . . . . . . . . . . . . . . . . .6-52Inflation - Tire Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-54High-Speed Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-56Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . . . .6-57Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . .6-58Tire Inspection and Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . .6-62When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . .6-64Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-64Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . .6-66Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . . . . . .6-67Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . .6-68Wheel Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-68
Section 6 Service and Appearance Care
6-1

{WARNING:
With the wrong kind of fluid in the brake hydraulic
system, the brakes might not work well. This could
cause a crash. Always use the proper brake fluid.
Notice:
•Using the wrong fluid can badly damage brake
hydraulic system parts. For example, just afew drops of mineral-based oil, such as engineoil, in the brake hydraulic system can damagebrake hydraulic system parts so badly that theywill have to be replaced. Do not let someoneput in the wrong kind of fluid.
•If brake fluid is spilled on the vehicle’s painted
surfaces, the paint finish can be damaged. Becareful not to spill brake fluid on the vehicle.If you do, wash it off immediately. SeeWashingYour Vehicle on page 6-95.
Brake Wear
This vehicle has disc brakes. Disc brake pads havebuilt-in wear indicators that make a high-pitched warningsound when the brake pads are worn and new padsare needed. The sound can come and go or be heard allthe time the vehicle is moving, except when applyingthe brake pedal firmly.
{WARNING:
The brake wear warning sound means that soon
the brakes will not work well. That could lead to an
accident. When the brake wear warning sound is
heard, have the vehicle serviced.
Notice:Continuing to drive with worn-out brakepads could result in costly brake repair.
Some driving conditions or climates can cause a brakesqueal when the brakes are first applied or lightlyapplied. This does not mean something is wrong withthe brakes.
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2. Get the vehicles close enough so the jumper cablescan reach, but be sure the vehicles are not touchingeach other. If they are, it could cause a groundconnection you do not want. You would not be ableto start your vehicle and the bad grounding coulddamage the electrical systems.
To avoid the possibility of the vehicles rolling, setthe parking brake firmly on both vehicles involved inthe jump start procedure. Put an automatictransmission in P (Park) or a manual transmissionin NEUTRAL before setting the parking brake.
Notice:If you leave the radio or other accessorieson during the jump starting procedure, they could bedamaged. The repairs would not be covered by thewarranty. Always turn off the radio and otheraccessories when jump starting the vehicle.
3. Turn off the ignition on both vehicles. Unplugunnecessary accessories plugged into the cigarettelighter or the accessory power outlets. Turn offthe radio and all lamps that are not needed. Thiswill avoid sparks and help save both batteries.And it could save the radio!
4. Open the hoods and locate the positive (+) andnegative (!) terminal locations on the othervehicle. Your vehicle has a remote positive (+) jumpstarting terminal and a remote negative (!) jumpstarting terminal.
The remote positive (+) terminal is located in theengine compartment on the passenger’s side of thevehicle. Lift the red plastic cap to access theterminal. SeeEngine Compartment Overview onpage 6-12for more information on the locationof the remote positive (+) terminal.
A second remote positive (+) terminal is located onthe rear underseat fuse block.
The remote negative (!) terminal is located behindthe power steering pulley, near the engine cover.It is marked GND (!).
4.6L LD8 Engine shown,4.6L L37 Enginesimilar
6-37