1999 CADILLAC DEVILLE Owners Manual

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If the headlamps are on low beam, they will shift to
high beam and stay there. Pull the lever toward you
to return to low beam.

If the headlamps are on high beam, they will switch
to low beam. To return to high beam, pull the lever
toward you.
Windshield Wipers
WIPER: Turn the band on the turn signal lever to
control the wipers.
MIST: Turn the band toward you and then release it for
a single wiping cycle. For more cycles, hold the band on
MIST longer.LO or HI: Turn the band away from you to either LO
(low speed) or to HI (high speed), depending on the
wiper speed you want.
DELAY: You can set the wiper speed for a long or short
delay between wipes with this setting. Turn the band to
the DELAY position. The closer you move it to LO, the
shorter the delay. (DeVille Only)
OFF: Turn the band to OFF to turn off the wipers.
Be sure to clear ice and snow from the wiper blades
before using them. If they're frozen to the windshield,
carefully loosen or thaw them. If the blades do become
damaged, get new blades or blade inserts.
Heavy snow or ice can overload the wiper motor. A
circuit breaker will stop the motor until it cools. Clear
away snow or ice to prevent an overload.
Rainsense Wipers (DeVille d'Elegance
and DeVille Concours Only)
This moisture sensor is mounted on the passenger's
interior side of the windshield behind the rearview
mirror and is used to automatically operate the wipers
by monitoring the amount of moisture that is on
the windshield.

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The Rainsense system can be activated by turning the
wiper stalk to one of the five sensitivity levels within the
AUTO DELAY area. The AUTO DELAY position closest
to OFF is the lowest sensitivity setting. This allows more
water to collect on the windshield between wipes. Turning
the stalk away from you to the other AUTO DELAY
settings increases the sensitivity of the system and
frequency of wipes. A single wipe will occur each time
you turn the wiper stalk to a higher sensitivity level. An
initial wipe occurs when you turn the ignition on as a
reminder that Rainsense is active. The windshield wipers
also remain in a ªhigh parkº position (the wipers will stop
on the windshield rather than their fully
- rested position),
even when the ignition is turned off.The Rainsense wipers operate in a delay mode as well as
a continuous low or high speed depending on the
amount of moisture and the sensitivity level. The MIST
and ªwashº cycles operate as normal and are not
affected by the Rainsense function.
NOTICE:
The wipers must be turned off when going
through a car wash to avoid damage.
It is important to note that the Rainsense wiping feature
(AUTO DELAY) can be overridden at any time by
manually changing the wiper control to LO or HI speed.
Note: If you ever need to replace the windshield, make
sure it is Rainsense compatible.

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2-39 Windshield Washer
CAUTION:
In freezing weather, don't use your washer until
the windshield is warmed. Otherwise the washer
fluid can form ice on the windshield, blocking
your vision.
At the top of the turn signal/multifunction lever there is
a paddle with the word PUSH on it. To spray washer
fluid on the windshield, press and release this paddle.
The wipers will clear the windshield and either stop or
return to your preset speed. For more washer cycles,
press and hold the paddle.
LOW WASHER FLUID will be displayed on the Driver
Information Center (DIC) when the washer fluid reaches
a low level.
Cruise Control
With cruise control, you can maintain a speed of about
25 mph (40 km/h) or more without keeping your foot
on the accelerator. This can help on long trips. Cruise
control does not work at speeds below 25 mph
(40 km/h).
Cruise control shuts off when you apply your brakes.

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CAUTION:

Cruise control can be dangerous where you
can't drive safely at a steady speed. So,
don't use your cruise control on winding
roads or in heavy traffic.

Cruise control can be dangerous on
slippery roads. On such roads, fast changes
in tire traction can cause needless wheel
spinning, and you could lose control. Don't
use cruise control on slippery roads.
If your vehicle is in cruise control when the traction
control system begins to limit wheel spin, the cruise
control will automatically disengage. (See ªTraction
Control Systemº in the Index.) When road conditions
allow you to safely use it again, you may turn the cruise
control back on.Setting Cruise Control
CAUTION:
If you leave your cruise control switch on when
you're not using cruise, you might hit a button
and go into cruise when you don't want to. You
could be startled and even lose control. Keep the
cruise control switch off until you want to use it.
1. Move the cruise control switch to ON.
2. Accelerate to the speed you want.
3. Press the SET CRUISE button at the end of the lever
and release it. The CRUISE ENGAGED message
will display on the Driver Information Center (DIC).
4. Remove your foot from the accelerator pedal.
Resuming a Set Speed
Setting the cruise control at a desired speed and then
applying the brake will end the cruise function.

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Once you're going about 25 mph (40 km/h) or more,
you can move the cruise control switch from ON to
R/A (Resume/Accelerate) briefly to reset. This returns
you to your desired preset speed. Also note that the
Driver Information Center (DIC) will display the
CRUISE ENGAGED message again.
Remember, if you hold the switch at R/A longer than
half a second, the vehicle will accelerate until you
release the switch or apply the brake. So unless you
want to go faster, don't hold the switch at R/A.
Increasing Speed While Using Cruise Control
There are two ways to go to a higher speed:

Use the accelerator pedal to get to the higher speed.
Push the button at the end of the lever and then
release the button and the accelerator pedal. You'll
now cruise at the higher speed.

Move the cruise switch from ON to R/A. Hold it there
until you reach a desired speed and then release the
switch. (To increase your speed in very small amounts,
move the switch to R/A. Each time you do this, your
vehicle will go about 1 mph (1.6 km/h) faster.)
The accelerate feature will only work after you have
set the cruise control speed by pushing the SET
CRUISE button.Reducing Speed While Using Cruise Control
There are two ways to reduce your speed while using
cruise control:

Push in the button at the end of the lever until you
reach a desired lower speed, then release it. A
CRUISE ENGAGED message will then display in
the Driver Information Center (DIC).

To slow down in very small amounts, push the
button briefly. Each time you do this, you'll go
1 mph (1.6 km/h) slower.
Passing Another Vehicle While Using Cruise Control
Use the accelerator pedal to increase your speed. When
you take your foot off the pedal, your vehicle will slow
down to the cruise control speed you set earlier.

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Using Cruise Control on Hills
How well your cruise control will work on hills depends
upon your speed, load and the steepness of the hills.
When going up steep hills, you may have to step on the
accelerator pedal to maintain your speed. When going
downhill, you may have to brake or shift to a lower gear
to keep your speed down. Of course, applying the brakes
or downshifting into FIRST (1) takes you out of cruise
control. Many drivers find this to be too much trouble
and don't use cruise control on steep hills.
Ending Cruise Control
There are two ways to end cruise control:

Step lightly on the brake pedal.

Move the CRUISE switch to OFF.
Erasing Speed Memory
The cruise control set speed memory is erased when you
turn off the cruise control or the ignition.Exterior Lamps
This control on the left
side of the instrument
panel controls these
lamp systems:

Headlamps

Taillamps

Parking Lamps

Sidemarker Lamps

License Plate Lamp

Underhood Lamp

Fog Lamps (DeVille Concours Only)

Instrument Panel Lights

Interior Courtesy Lamps

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2-43 Parking Lamps
Pull the lamp control knob out to the first stop to turn on
the parking and taillamps, sidemarker lamps and
instrument panel lights. Push the control knob all the
way back in to turn the lamps and lights off.
Headlamps
Pull the knob out all the way to turn on the headlamps.
Push the control knob all the way back in to turn the
lamps and lights off.
Cluster lighting will dim only when it is dark outside.
The instrument panel backlighting will activate
whenever the lamps or lights or turned on.
Wiper
-Activated Headlamps
This feature activates the headlamps and parking lamps
after the windshield wipers have been in use for
approximately 20 seconds.
In order to operate the wiper
-activated headlamps, the
Twilight Sentinel
must be turned on. This feature lights
the way in poor weather and it also makes your vehicle
more visible to other drivers. If the wiper
-activated
headlamps are on and the ignition switch is turned off, the
wiper
- activated headlamps will immediately turn off.The wiper
-activated headlamps will deactivate if you
turn off the Twilight Sentinel or if the windshield wipers
have been turned off for a period of one or two seconds.
Lamps on Reminder
You will hear a warning chime if you open any door
while leaving the lamps on, if the manual headlamp
control is activated. An exception to this is when you're
using Twilight Sentinel.
Daytime Running Lamps
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the day.
DRL can be helpful in many different driving
conditions, but they can be especially helpful in the
short periods after dawn and before sunset.
The DRL system will make the low
-beam headlamps
come on at reduced brightness when:

the ignition is on,

the headlamp switch is off and

the transaxle is not in PARK (P).
When DRL are on, only your low
-beam headlamps (at
reduced brightness) will be on. No other exterior lamps
such as the parking lamps, taillamps, etc. will be on
when the DRL are being used. Your instrument panel
won't be lit up either.

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When the Twilight Sentinel switch is on and it's dark
enough outside, the low
-beam headlamps (at reduced
intensity) will turn off and normal low
-beam headlamp
operation will occur. When the Twilight Sentinel switch
is on and it's bright enough outside, the regular lamps
will go off, and the low
-beam headlamps at reduced
brightness will take over for the DRL.
If it's dark enough outside and the Twilight Sentinel
control is off, a HEADLAMPS SUGGESTED message
will display on the Driver Information Center (DIC).
This message informs the driver that turning on the
exterior lamps is recommended even though the DRL
are still illuminated (it's become dark enough outside to
require the headlamps and/or other exterior lamps).
Turning on the Twilight Sentinel, the headlamp switch
or the fog lamp switch will remove the HEADLAMPS
SUGGESTED message.
To idle your vehicle with the DRL off, turn off the
Twilight Sentinel and shift the transaxle into PARK (P).
Placing your vehicle in PARK (P) disables the DRL.
The DRL will stay off until you shift out of PARK (P).
To drive your vehicle with the DRL off, turn off the
Twilight Sentinel and manually turn on the parking lamps.
As with any vehicle, you should turn on the regular
headlamp system when you need it.
Fog Lamps (DeVille Concours Only)
Use the fog lamps for better
vision in foggy or misty
conditions. When you press
the fog lamp button, a small
indicator light will tell you
that the fog lamps and the
parking lamps are on. Press
the button again to turn
them off.
If you turn on the high
-beam headlamps, the fog lamps
will turn off. They'll turn back on again when you
switch to low
-beam headlamps.
When the Twilight Sentinel is on and the fog lamp
switch is activated, the fog lamps will remain on as well
as the headlamps and parking lamps.