Owner's Manual
Table Of Contents
- 2006 Cadillac STS/STS-V BOOK TOC
- Seats and Restraint Systems
- Front Seats
- Rear Seats
- Safety Belts
- Safety Belts: They Are for Everyone
- Questions and Answers About Safety Belts
- How to Wear Safety Belts Properly
- Driver Position
- Shoulder Belt Height Adjustment
- Safety Belt Use During Pregnancy
- Right Front Passenger Position
- Rear Seat Passengers
- Rear Safety Belt Comfort Guides
- Safety Belt Pretensioners
- Safety Belt Extender
- Child Restraints
- Airbag System
- Restraint System Check
- Features and Controls
- Keys
- Doors and Locks
- Windows
- Theft-Deterrent Systems
- Starting and Operating Your Vehicle
- New Vehicle Break-In
- Ignition Positions
- Retained Accessory Power (RAP)
- Starting the Engine
- Engine Coolant Heater
- Automatic Transmission Operation (STS)
- Automatic Transmission Operation (STS-V)
- Parking Brake
- Shifting Into Park (P)
- Shifting Out of Park (P)
- Parking Over Things That Burn
- Engine Exhaust
- Running the Engine While Parked
- Mirrors
- Automatic Dimming Rearview Mirror with Intellibeam™ and OnStar®
- Automatic Dimming Rearview Mirror
- Automatic Dimming Rearview Mirror with OnStar®
- Automatic Dimming Rearview Mirror with OnStar® and Compass
- Outside Power Heated Mirrors
- Outside Automatic Dimming Mirror
- Outside Convex Mirror
- Outside Parallel Park Assist Mirror
- OnStar® System
- Universal Home Remote System
- Storage Areas
- Sunroof
- Vehicle Personalization
- Instrument Panel
- Instrument Panel Overview
- Hazard Warning Flashers
- Other Warning Devices
- Horn
- Power Tilt Wheel and Telescopic Steering Column
- Heated Steering Wheel
- Turn Signal/Multifunction Lever
- Turn and Lane-Change Signals
- Headlamp High/Low-Beam Changer
- Forward Collision Alert (FCA) System
- Flash-to-Pass
- Windshield Wipers
- Rainsense™ II Wipers
- Windshield Washer
- Headlamp Washer
- Cruise Control
- Adaptive Cruise Control
- Headlamps
- Wiper Activated Headlamps
- Headlamps on Reminder
- Daytime Running Lamps (DRL)
- Fog Lamps
- Twilight Sentinel®
- Exterior Lighting Battery Saver
- Instrument Panel Brightness
- Entry Lighting
- Parade Dimming
- Reading Lamps
- Battery Load Management
- Inadvertent Power Battery Saver
- Head-Up Display (HUD)
- Ultrasonic Rear Parking Assist (URPA)
- Accessory Power Outlet(s)
- Ashtray(s) and Cigarette Lighter
- Climate Controls
- Warning Lights, Gages, and Indicators
- Instrument Panel Cluster
- Speedometer and Odometer
- Tachometer
- Safety Belt Reminder Light
- Passenger Safety Belt Reminder Light
- Airbag Readiness Light
- Passenger Airbag Status Indicator
- Charging System Light
- Brake System Warning Light
- Anti-Lock Brake System Warning Light
- Low Tire Pressure Warning Light
- Traction Control System (TCS) Warning Light
- Engine Coolant Temperature Warning Light
- Engine Coolant Temperature Gage
- Malfunction Indicator Lamp
- Oil Pressure Light
- Security Light
- Fog Lamp Light
- Lights On Reminder
- Cruise Control Light
- Highbeam On Light
- Fuel Gage
- Driver Information Center (DIC)
- Audio System(s)
- Instrument Panel Overview
- Driving Your Vehicle
- Your Driving, the Road, and Your Vehicle
- Defensive Driving
- Drunken Driving
- Control of a Vehicle
- Braking
- Anti-Lock Brake System (ABS)
- Braking in Emergencies
- Traction Control System (TCS)
- Competitive Driving Mode (STS-V)
- Magnetic Ride Control
- Limited-Slip Rear Axle
- StabiliTrak® System
- Panic Brake Assist
- All-Wheel Drive (AWD) System
- Steering
- Off-Road Recovery
- Passing
- Loss of Control
- Competitive Driving
- Driving at Night
- Driving in Rain and on Wet Roads
- City Driving
- Freeway Driving
- Before Leaving on a Long Trip
- Highway Hypnosis
- Hill and Mountain Roads
- Winter Driving
- If Your Vehicle is Stuck in Sand, Mud, Ice or Snow
- Rocking Your Vehicle to Get It Out
- Loading Your Vehicle
- Towing
- Your Driving, the Road, and Your Vehicle
- Service and Appearance Care
- Service
- Fuel
- Checking Things Under the Hood
- Hood Release
- Engine Compartment Overview
- Engine Oil
- Engine Oil Life System
- Engine Air Cleaner/Filter
- Automatic Transmission Fluid
- Engine Coolant
- Coolant Surge Tank Pressure Cap
- Engine Overheating
- Overheated Engine Protection Operating Mode
- Cooling System
- Power Steering Fluid
- Windshield Washer Fluid
- Brakes
- Battery
- Jump Starting
- All-Wheel Drive
- Rear Axle
- Front Axle
- Bulb Replacement
- Windshield Replacement
- Windshield Wiper Blade Replacement
- Tires
- Tire Sidewall Labeling
- Tire Terminology and Definitions
- Run-Flat Tires (STS-V)
- Inflation - Tire Pressure
- Tire Pressure Monitor System
- Tire Inspection and Rotation
- When It Is Time for New Tires
- Buying New Tires
- Different Size Tires and Wheels
- Uniform Tire Quality Grading
- Wheel Alignment and Tire Balance
- Wheel Replacement
- Tire Chains
- Lifting Your Vehicle (STS-V)
- If a Tire Goes Flat
- Changing a Flat Tire (STS Only)
- Removing the Spare Tire and Tools (STS Only)
- Removing the Flat Tire and Installing the Spare Tire (STS Only)
- Storing a Flat or Spare Tire and Tools (STS Only)
- Compact Spare Tire (STS Only)
- Appearance Care
- Cleaning the Inside of Your Vehicle
- Fabric/Carpet
- Leather
- Instrument Panel, Vinyl, and Other Plastic Surfaces
- Wood Panels
- Speaker Covers
- Care of Safety Belts
- Weatherstrips
- Washing Your Vehicle
- Cleaning Exterior Lamps/Lenses
- Finish Care
- Windshield and Wiper Blades
- Aluminum or Chrome-Plated Wheels
- Tires
- Sheet Metal Damage
- Finish Damage
- Underbody Maintenance
- Chemical Paint Spotting
- Vehicle Care/Appearance Materials
- Vehicle Identification
- Electrical System
- Capacities and Specifications
- Maintenance Schedule
- Maintenance Schedule
- Introduction
- Maintenance Requirements
- Your Vehicle and the Environment
- Using the Maintenance Schedule
- Scheduled Maintenance
- Additional Required Services
- Maintenance Footnotes
- Owner Checks and Services
- At Each Fuel Fill
- At Least Once a Month
- At Least Once a Year
- Recommended Fluids and Lubricants
- Normal Maintenance Replacement Parts
- Engine Drive Belt Routing (STS-V)
- Maintenance Record
- Maintenance Schedule
- Customer Assistance and Information
- Index

Engine Coolant Heater
Your vehicle may be equipped with an engine
coolant heater.
In very cold weather, 0°F (−18°C) or colder, the engine
coolant heater can help. You will get easier starting
and better fuel economy during engine warm-up.
Usually, the coolant heater should be plugged in a
minimum of four hours prior to starting your vehicle. At
temperatures above 32°F (0°C), use of the coolant
heater is not required. Your vehicle may also have an
internal thermostat in the plug end of the cord. This will
prevent operation of the engine coolant heater when
the temperature is at or above 0°F (−18°C) as noted
on the cord.
To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
For the 3.6L V6 engine, the cord is located in
the engine compartment on the passenger’s side of
the vehicle in front of the fuse block.
For the 4.6L V8 engine, the cord is located in the
engine compartment on the driver’s side of the
vehicle near the inner fender and above the strut.
For the 4.4L V8 engine, the cord is located in
the front of the engine compartment, on the
passenger’s side of the vehicle. The plug will be
inside the upper grille cutout.
3. You must remove the plastic cap to access
the plug.
4. Plug it into a normal, grounded 110-volt AC outlet.
{CAUTION:
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the
wrong kind of extension cord could overheat
and cause a fire. You could be seriously
injured. Plug the cord into a properly grounded
three-prong 110-volt AC outlet. If the cord will
not reach, use a heavy-duty three-prong
extension cord rated for at least 15 amps.
5. Before starting the engine, be sure to unplug and
store the cord as it was before to keep it away
from moving engine parts. If you do not, it could
be damaged.
How long should you keep the coolant heater plugged
in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead
of trying to list everything here, we ask that you contact
your dealer in the area where you will be parking
your vehicle. The dealer can give you the best advice
for that particular area.
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