Page 89 of 384
•There may be issues with the detection of vehicles in front when
driving into and coming out of a bend or curve in the road.
In these cases ACC may brake late or unexpectedly. The driver should
stay alert and intervene when necessary.
If the front end of the vehicle is hit or damaged, the radar sensing zone
may be altered causing missed or false vehicle detections. Check with
your authorized dealer to have the ACC radar checked for proper
coverage and operation.
ACC not available
Several conditions exist which can cause ACC to deactivate or prevent
ACC from activating when requested. These conditions include:
•The sensor is blocked, refer toBlocked sensorin this section.
•Brake temperature is high, refer toHilly condition usagein this
section.
•A failure has occurred in the ACC system or related system.
Driver Controls
89
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 90 of 384

Blocked sensor
If a message regarding a blocked
sensor is displayed, the radar signals
from the sensor have been
obstructed. The sensor is located
behind a fascia cover near the driver
side of the lower grille. When the
radar signals are obstructed, a
vehicle ahead cannot be detected
and the ACC will not function. The
following table lists possible causes
and actions for this message being displayed.
Cause Action
The surface of the radar in the
grille is dirty or obstructed in
some wayClean the grille surface in front of
the radar or remove the object
causing the obstruction
The surface of the radar in the
grille is clean but the message
remains in the displayWait a short time. It may take
several minutes for the radar to
detect that it is no longer
obstructed
Heavy rain or snow is interfering
with the radar signalsDo not use ACC in these
conditions because it may not
detect, warn, or respond to
potential collisions.
Swirling water, or snow or ice on
the surface of the road may
interfere with the radar signalsDo not use ACC in these
conditions because it may not
detect, warn, or respond to
potential collisions.
Desert / remote area with no other
vehicles and no roadside objectsWait a short time.
Due to the nature of radar technology, it is possible to get a blockage
warning and not be blocked. This can happen, for example, when driving
in sparse rural or desert environments. A false blocked condition will
either self clear or clear after a key cycle.
Driver Controls
90
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 91 of 384

WARNING:Do not use ACC when towing a trailer with brake
controls. Aftermarket trailer brakes will not function properly
when ACC is activated because the brakes are electronically controlled.
Failing to do so may result in loss of vehicle control, which could result
in serious injury.
WARNING:Do not use tires sizes other than those
recommended because this can affect the normal operation of
ACC. Failing to do so may result in a loss of vehicle control, which
could result in serious injury.
STEERING WHEEL CONTROLS
Radio control features
– VOL + (Volume):Press to
decrease or increase the volume.
(Seek):Press to select
the previous/next radio station
preset, CD track or satellite radio
station preset depending on which
media mode you are in.
MEDIA:Press repeatedly to scroll
through available audio modes.
SYNCsystem hands free
control feature
Press
briefly to use the voice
command feature. You will hear a
tone and LISTENING will appear in
the radio display. Press and
hold
to exit voice command.
Press
to activate phone mode or
answer a phone call. Press and
hold
to end call or exit phone
mode.
Press
to scroll through various menus and selections. Press
OK to confirm your selection.
Driver Controls
91
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 92 of 384

For further information on the SYNCsystem, refer to theSYNC
supplement.
Navigation system/SYNChands
free control features (if
equipped)
Press
control briefly until the
voice
icon appears on the
Navigation display to use the voice
command feature.
Press
to activate phone mode or
answer a phone call. Press and
hold
to exit phone mode or end
call.
For further information on the Navigation system/SYNCsystem, refer to
theNavigation SystemandSYNCsupplements.
DUAL PANEL MOON ROOF AND POWER SUNSCREEN
(IF EQUIPPED)
The dual panel moon roof and power sunscreen controls are located on
the overhead console.
WARNING:Do not let children play with the moon roof or leave
children unattended in the vehicle. They may seriously hurt
themselves.
The dual panel moon roof and power sunscreen are equipped with an
automatic, one-touch, express opening and closing feature. To stop
motion at any time during the one-touch operation, press the control a
second time.
To open the sunscreen:Press and
release the
control. The
sunscreen will automatically open.
Note:For the dual panel moon roof,
the sunscreen stops at the first
panel. Press and hold to continue to
open the sunscreen past the second
panel.
To close the sunscreen:Pull down the
control and release. The
sunscreen will automatically close. If the moon roof is open, it will
automatically close prior to closing the sunscreen.
Driver Controls
92
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 93 of 384

To open the dual panel moon
roof:Press and release the SLIDE
control. The moon roof will
automatically open. If the sunscreen
is closed, it will automatically open
prior to opening the moon roof.
WARNING:When closing the dual panel moon roof, you should
verify that it is free of obstructions and ensure that children
and/or pets are not in the proximity of the roof opening.
To close the dual panel moon roof:Pull down the SLIDE control and
release. The moon roof will automatically close.
Bounce-back:When an obstacle has been detected in the moon roof
opening as the moon roof is closing, the moon roof will automatically
open and stop at a prescribed position.
Bounce-back override:To override bounce-back function, pull and hold
the SLIDE switch within two seconds of a bounce-back event. The
closing force will begin to increase each time the moon roof is closed for
the first three closing cycles, with bounce-back active. For example:
Bounce-back can be used to overcome the resistance of ice on the moon
roof or seals.
To vent the dual panel moon roof:Press and quickly release the TILT
control (moon roof is equipped with, automatic, one-touch, tilt open
feature).The moon roof must be in the closed position in order to
move it into the vent position.
To close dual panel moon roof from vent:Pull and quickly release
the TILT control down to close the glass from the vent position to close
(moon roof is equipped with automatic, one-touch, tilt close feature).
Note:You can open and close the vehicle’s windows and moon roof (if
equipped) by using the control on the remote transmitter. Refer to
Power windowsearlier in this chapter.
Driver Controls
93
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 94 of 384

POWER REAR SUNSHADE
Your vehicle is equipped with a power
rear sunshade that covers the rear
window of your vehicle. The control is
located in the center console access
bin next to the power point.
Press the control to move the shade
up or down.
The power sunshade is equipped
with an automatic, one-touch, auto
down feature. To stop motion at any
time during the auto down operation, press the control a second time. To
activate the automatic, one-touch, auto down feature, press the control
and release quickly.
The rear sunshade will automatically retract when the transmission is
shifted into R (reverse).
UNIVERSAL GARAGE DOOR OPENER
The universal garage door opener can be used to replace the common
hand-held transmitter.
HomeLinkWireless Control System
The HomeLinkWireless Control
System, located on the driver’s visor,
provides a convenient way to
replace up to three hand-held
transmitters with a single built-in
device. This feature will learn the
radio frequency codes of most
transmitters to operate garage
doors, entry gate operators, security systems, entry door locks, and
home or office lighting.
WARNING:When programming your HomeLinkWireless
Control System to a garage door or gate, be sure that people and
objects are out of the way to prevent potential injury or damage.
Do not use the HomeLinkWireless Control System with any garage
door opener that lacks safety stop and reverse features as required by
U.S. federal safety standards (this includes any garage door opener
model manufactured before April 1, 1982). A garage door which cannot
Driver Controls
94
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 95 of 384

detect an object, signaling the door to stop and reverse, does not meet
current U.S. federal safety standards. For more information, contact
HomeLinkat:www.homelink.comor1–800–355–3515.
Retain the original transmitter for use in other vehicles as well as for
future programming procedures (i.e. new HomeLinkequipped vehicle
purchase). It is also suggested that upon the sale of the vehicle, the
programmed Homelinkbuttons be erased for security purposes, refer to
Programmingin this section.
Programming
Do not program HomeLinkwith the vehicle parked in the garage.
Note:Your vehicle may require the ignition switch to be turned to the
accessory position for programming and/or operation of the HomeLink.
It is also recommended that a new battery be placed in the hand-held
transmitter of the device being programmed to HomeLinkfor quicker
training and accurate transmission of the radio-frequency signal.
1. Position the end of your
hand-held transmitter 1–3 inches
(2–8 cm) away from the HomeLink
button you wish to program (located
on your visor) while keeping the
indicator light in view.
2. Simultaneously press and hold
both the chosen HomeLinkand
hand-held transmitter buttons until the HomeLinkindicator light
changes from a slow to a rapidly blinking light. Now you may release
both the HomeLinkand hand-held transmitter buttons.
Note:Some entry gates and garage door openers may require you to
replace Step 2 with procedures noted in theGate Operator and
Canadian Programmingin this section for Canadian residents.
3. Firmlypress and hold for five seconds and releasethe
programmed HomeLinkbutton up to two separate times to activate the
door. If the door does not activate, press and hold the just-trained
HomeLinkbutton and observe the indicator light.
•If the indicator lightstays on constantly, programming is complete
and your device should activate when the HomeLinkbutton is pressed
and released.
•If the indicator light blinksrapidly for two seconds and then turns
to a constant light continue with “Programming” Steps 4 through
6to complete programming of a rolling code equipped device (most
commonly a garage door opener).
Driver Controls
95
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)
Page 96 of 384

4. At the garage door opener receiver (motor-head unit) in the garage,
locate the “learn” or “smart” button (usually near where the hanging
antenna wire is attached to the unit).
5. Firmly press and release the “learn” or “smart” button. (The name and
color of the button may vary by manufacturer.)
Note:There are 30 seconds in which to initiate Step 6.
6. Return to the vehicle and firmlypress, hold for two seconds and
releasethe programmed HomeLinkbutton. Repeat the
press/hold/releasesequence again and, depending on the brand of the
garage door opener (or other rolling code equipped device), repeat this
sequence a third time to complete the programming.
HomeLinkshould now activate your rolling code equipped device. To
program additional HomeLinkbuttons begin with Step 1 in this section.
For questions or comments, please contact HomeLinkat
www.homelink.comor1–800–355–3515.
Gate Operator & Canadian Programming
During programming, your
hand-held transmitter may
automatically stop transmitting —
not allowing enough time for
HomeLinkto accept the signal
from the hand-held transmitter.
After completing Step 1 outlined in
theProgrammingsection, replace
Step 2 with the following:
Note:If programming a garage door opener or gate operator, it is
advised to unplug the device during the “cycling” process to prevent
overheating.
•Continue to press and hold the HomeLinkbutton (note Step 2 in the
Programmingsection) while you press and release —every two
seconds(“cycle”) your hand-held transmitter until the frequency
signal has been accepted by the HomeLink. The indicator light will
flash slowly and then rapidly after HomeLinkaccepts the radio
frequency signal.
•Proceed with Step 3 in theProgrammingsection.
Driver Controls
96
2012 MKS(mks)
Owners Guide, 1st Printing
USA(fus)