2007 CADILLAC DTS PROFESSIONAL head light

Headlamp aiming is done with the vehicle’s
low-beam headlamps. The high-beam headlamps
will be correctly aimed if the low-beam headlamps
are aimed properly.
To adjust the vertical aim:
1. Open the hood. SeeHood Release on
page 363for more information.
2. Find the center line running through the lens
of the headlamp.
3. Record the distance from the ground to the
center line running through the lens of the
headlamp.4. At a wall, measure from the ground
upward (A) to the recorded distance from
Step 3 and mark it.
5. Draw or tape a horizontal line the width of the
vehicle at the wall where it was marked in
Step 4.
Notice:Do not cover a headlamp to improve
beam cut-off when aiming. Covering a
headlamp may cause excessive heat build-up
which may cause damage to the headlamp.
6. Turn on the low-beam headlamps and place a
piece of cardboard or equivalent in front of the
headlamp not being aimed. This should
allow only the beam of light from the headlamp
being aimed to be seen on the at surface.
398

7. Locate the vertical headlamp aiming screws.
They are located under the hood near each
headlamp assembly. First lift the ap to
access either of them. Each one is the top
outboard screw by the “V” on the cover panel
next to the aiming ap.
The adjustment screw can be turned with a
6 mm hex wrench.8. Turn the vertical aiming screw until the
headlamp beam is aimed to the horizontal tape
line. Turn it clockwise or counterclockwise to
raise or lower the angle of the beam.
The top edge of the cut-off should be
positioned at the bottom edge of the horizontal
tape line.
9. Make sure that the light from the headlamp is
positioned at the bottom edge of the horizontal
tape line. The lamp on the left (A) shows
the correct headlamp aim. The lamp on the
right (B) shows the incorrect headlamp aim.
10. Repeat Steps 7 through 9 for the opposite
headlamp.
399

Bulb Replacement
It is recommended that all bulbs be replaced by
your dealer.
High Intensity Discharge (HID)
Lighting
{CAUTION:
The low beam high intensity discharge
lighting system operates at a very high
voltage. If you try to service any of the
system components, you could be
seriously injured. Have your dealer or a
qualied technician service them.
Your vehicle has HID headlamps. After your
vehicle’s HID headlamp bulb has been replaced,
you may notice that the beam is a slightly different
shade than it was originally. This is normal.
Windshield Wiper Blade
Replacement
Windshield wiper blades should be inspected for
wear or cracking. SeeScheduled Maintenance
on page 465for more information on wiper blade
inspection.
Replacement blades come in different types and
are removed in different ways. Here’s how to
remove the wiper blade:
1. Turn the engine off.
2. Lift the windshield wiper arm and blade away
from the windshield.
3. Pull the clip up from the blade connecting point,
and pull the blade assembly down toward the
windshield to remove it from the wiper arm.
400

While the tires available on General Motors
passenger cars and light trucks may vary with
respect to these grades, they must also conform to
federal safety requirements and additional General
Motors Tire Performance Criteria (TPC) standards.
Treadwear
The treadwear grade is a comparative rating
based on the wear rate of the tire when tested
under controlled conditions on a specied
government test course. For example, a tire
graded 150 would wear one and a half (1.5) times
as well on the government course as a tire
graded 100. The relative performance of tires
depends upon the actual conditions of their use,
however, and may depart signicantly from
the norm due to variations in driving habits, service
practices, and differences in road characteristics
and climate.
Traction – AA, A, B, C
The traction grades, from highest to lowest, are AA,
A, B, and C. Those grades represent the tire’s
ability to stop on wet pavement as measured under
controlled conditions on specied government test
surfaces of asphalt and concrete. A tire marked C
may have poor traction performance.Warning:The traction grade assigned to this tire
is based on straight-ahead braking traction
tests, and does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
Temperature – A, B, C
The temperature grades are A (the highest), B,
and C, representing the tire’s resistance to
the generation of heat and its ability to dissipate
heat when tested under controlled conditions on a
specied indoor laboratory test wheel. Sustained
high temperature can cause the material of the tire
to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure.
The grade C corresponds to a level of performance
which all passenger car tires must meet under
the Federal Motor Vehicle Safety Standard
No. 109. Grades B and A represent higher levels
of performance on the laboratory test wheel
than the minimum required by law.
Warning:The temperature grade for this tire is
established for a tire that is properly inated
and not overloaded. Excessive speed,
underination, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.
423

Audio System.............................................. 268
Audio Steering Wheel Controls................. 296
Backglass Antenna................................... 300
Care of Your CD Player........................... 299
Care of Your CDs.................................... 299
Navigation/Radio System,
see Navigation Manual......................... 296
Radio with CD......................................... 273
Setting the Time...................................... 269
Theft-Deterrent Feature............................ 296
Understanding Radio Reception............... 298
XM™ Satellite Radio Antenna System...... 300
Automatic Transaxle
Fluid........................................................ 372
Operation................................................. 122
B
Backglass Antenna...................................... 300
Battery........................................................ 390
Electric Power Management..................... 201
Exterior Lighting Battery Saver................. 199
Inadvertent Power Saver.......................... 202
Load Management................................... 200
Run-Down Protection............................... 202
Before Leaving on a Long Trip.................... 324Brake
Emergencies............................................ 309
Parking.................................................... 125
Brakes........................................................ 387
Panic Assist............................................. 312
System Warning Light.............................. 229
Braking....................................................... 306
Braking in Emergencies............................... 309
Break-In, New Vehicle................................. 117
Bulb Replacement....................................... 400
Headlamp Aiming..................................... 397
High Intensity Discharge (HID) Lighting.... 400
Buying New Tires........................................ 420
C
Calibration.......................... 18,132, 134, 136
California Fuel............................................. 356
California Proposition 65 Warning................ 354
Canadian Owners........................................... 3
Capacities and Specications...................... 460
Carbon Monoxide..............106, 130, 328, 342
Care of
Safety Belts............................................. 443
Your CD Player........................................ 299
Your CDs ................................................. 299
504

Driving
At Night................................................... 318
City.......................................................... 322
Defensive................................................. 302
Drunken................................................... 303
Freeway................................................... 323
Hill and Mountain Roads.......................... 326
In Rain and on Wet Roads...................... 320
Rocking Your Vehicle to Get it Out.......... 333
Winter...................................................... 328
Dual Climate Control System....................... 210
E
EDR ............................................................ 500
Electrical System
Add-On Equipment................................... 451
Fuses and Circuit Breakers...................... 452
Headlamp Wiring..................................... 451
Power Windows and Other
Power Options...................................... 452
Rear Underseat Fuse Block..................... 455
Underhood Fuse Block............................. 452
Windshield Wiper Fuses........................... 451Engine
Air Cleaner/Filter...................................... 370
Check and Service Engine
Soon Light............................................ 234
Coolant.................................................... 374
Coolant Heater......................................... 121
Coolant Temperature Gage...................... 233
Coolant Temperature Warning Light.......... 233
Drive Belt Routing.................................... 477
Engine Compartment Overview................ 364
Exhaust................................................... 130
Oil ........................................................... 365
Oil Life System........................................ 368
Overheated Protection
Operating Mode.................................... 379
Overheating............................................. 377
Running While Parked............................. 131
Starting.................................................... 119
Entry Lighting.............................................. 200
Event Data Recorders................................. 500
Extender, Safety Belt..................................... 42
Exterior Lamps............................................ 193
Exterior Lighting Battery Saver.................... 199
507

H
Hazard Warning Flashers............................ 164
Head Restraints............................................ 16
Headlamp
Aiming..................................................... 397
Headlamp Wiring......................................... 451
Headlamps
Bulb Replacement.................................... 400
Daytime Running Lamps.......................... 197
Exterior Lamps......................................... 193
Flash-to-Pass........................................... 172
High Intensity Discharge (HID) Lighting.... 400
High/Low Beam Changer......................... 167
On Reminder........................................... 197
Wiper Activated........................................ 197
Heated Seats................................................ 11
Heated Steering Wheel............................... 166
Heater......................................................... 210
Highbeam On Light..................................... 238
High-Speed Operation, Tires........................ 413
Highway Hypnosis....................................... 325
Hill and Mountain Roads............................. 326
Hood
Checking Things Under............................ 362
Release................................................... 363Horn............................................................ 164
How to Use This Manual................................ 4
How to Wear Safety Belts Properly............... 24
I
Ignition Positions......................................... 118
Inadvertent Power Battery Saver................. 202
Infants and Young Children, Restraints.......... 45
Ination - Tire Pressure............................... 411
Instrument Panel
Overview.................................................. 162
Instrument Panel (I/P)
Brightness................................................ 199
Cluster..................................................... 223
J
Jump Starting.............................................. 392
K
Keyless Entry System................................... 95
Keys............................................................. 93
509

Safety Belts
Care of.................................................... 443
Center Front Passenger Position................ 35
Driver Position........................................... 25
How to Wear Safety Belts Properly............ 24
Questions and Answers About
Safety Belts............................................ 23
Rear Safety Belt Comfort Guides............... 39
Rear Seat Passengers............................... 36
Right Front Passenger Position.................. 34
Safety Belt Extender.................................. 42
Safety Belt Use During Pregnancy............. 34
Safety Belts Are for Everyone.................... 19
Shoulder Belt Height Adjuster.................... 33
Safety Warnings and Symbols......................... 4
Scheduled Maintenance............................... 465
Seats
Center Seat............................................... 17
Head Restraints......................................... 16
Heated and Cooled Seats.......................... 11
Heated Seats - Rear.................................. 17
Massaging Lumbar..................................... 10
Memory, Mirrors......................................... 12
Power Lumbar........................................... 10
Power Lumbar, Rear.................................. 18Seats (cont.)
Power Reclining Seatbacks........................ 14
Power Seats................................................ 9
Securing a Child Restraint
Center Front Seat Position......................... 65
Rear Seat Position..................................... 63
Right Front Seat Position........................... 66
Security Light.............................................. 237
Service........................................................ 353
Accessories and Modications.................. 353
Adding Equipment to the Outside
of Your Vehicle..................................... 355
California Proposition 65 Warning............. 354
Doing Your Own Work............................. 354
Engine Soon Light................................... 234
Publications Ordering Information............. 498
Servicing Your Airbag-Equipped Vehicle......... 86
Sheet Metal Damage................................... 447
Shifting Into Park (P)................................... 126
Shifting Out of Park (P)............................... 129
Shoulder Belt Height Adjuster........................ 33
Signals, Turn and Lane-Change.................. 167
Spare Tire................................................... 438
Installing.................................................. 431
Removing................................................ 429
Storing..................................................... 437
515