2018 INFINITI Q50 HYBRID brake light

Hybrid System-4Hybrid System Overview
delivered to an INFINITI retailer to
have the Li-ion battery pack and high
voltage parts such as the inverter,
including the wiring harness, re-
moved prior to painting. Li-ion bat-
tery packs exposed to heat in the
paint booth will experience capacity
loss. Damaged Li-ion battery packs
may also pose safety risks to un-
trained mechanics and repair person-
nel.The emergency shut-off system is activated
and the high-voltage system automatically
turns off in the following conditions:
.
Front and side collisions in which the air
bags are deployed.
. Certain rear collisions.
. Certain INFINITI Direct Response Hy-
brid
®System malfunctions
For the above collisions and the certain
hybrid system malfunctions, the READY to
drive indicator light will turn off. See “Warn-
ing lights, indicator lights and audible re-
minders” (P.2-9).
The emergency shut-off activates for the
above collisions to minimize risk of an event
that could cause injury or an accident. If the
emergency shut-off system activates, the
hybrid system may not switch to READY to
drive position. If this occurs, it is recom-
mended that you contact an INFINITI re-
tailer. Even if the ignition switch is switched
to READY to drive position, the system may
shut-off suddenly. Therefore, drive cau-
tiously to the nearest INFINITI retailer or
contact an INFINITI retailer as soon as
possible. To start the INFINITI Direct Response
Hybrid
®System:
1. Depress the brake pedal and place the ignition switch in the ON position when
the transmission is in the P (Park) or N
(Neutral) position (P is recommended).
(For more details, see “Push-button
ignition switch” (P.5-11).)
2. The READY to drive indicator light
flashes, then turns illuminated. (The
hybrid system switched to the READY
to drive mode when the indicator light
illuminates.)
When the READY to drive indicator light
illuminates, the vehicle can be driven,
even if the gasoline engine is not running.
NOTE:
The gasoline engine starts and stops auto-
matically. It may stop during low speed
driving, deceleration or when the vehicle is
stopped.
The gasoline engine may automatically run
in the following conditions:
. The level of remaining charge in the
Lithium ion (Li-ion) battery is low. The
engine runs to charge the Li-ion battery
and to provide power to the drive the
vehicle.
. The temperature of the engine coolant is
low.
EMERGENCY SHUT-OFF SYSTEMOPERATION OF THE INFINITI DIRECT
RESPONSE HYBRID®SYSTEM

The Approaching Vehicle Sound for Pedes-
trians (VSP) system is a function that uses
sound to help alert pedestrians of the
presence of the vehicle when it is being
driven at a low speed in the electric drive
mode under the following conditions:
.The sound starts when the vehicle starts
accelerating.
. The sound stops when the vehicle speed
is more than 19 MPH (30 km/h) while
accelerating.
. The sound starts when the vehicle speed
is less than 16 MPH (25 km/h) while
decelerating.
. The sound stops when the vehicle stops.
. The sound does not stop with the vehicle
in the R (Reverse) position even if the
vehicle stops.
The VSP system is automatically turned on
when the vehicle is in the READY to drive
mode.
If there is a malfunction in the VSP system,
the VSP OFF indicator light in the meter
illuminates. See “Approaching Vehicle Sound
for Pedestrians (VSP) OFF indicator light”
(P.2-15).
WARNING
. If the sound from the VSP system is
not heard while driving, stop the
vehicle in a safe and quiet location.
Open a window, and then place the
vehicle in the R (Reverse) position
with the brake pedal firmly de-
pressed. Check that the operating
sound can be heard from the front
side of the vehicle.
. If the sound cannot be heard, have
the system immediately inspected. It
is recommended you visit an INFINITI
retailer for this service.
Hybrid System OverviewHybrid System-9
APPROACHING VEHICLE SOUND
FOR PEDESTRIANS (VSP) SYSTEM

HYBRID VEHICLE CHARACTER-
ISTICS
WARNING
.When you leave your vehicle, be sure
to place the ignition switch in the
OFF position.
. Be sure to put the transmission in the
P (Park) position because the vehicle
can move when the READY to drive
indicator light is on even if the gaso-
line engine is not running. When the
READY to drive indicator light is on,
do not leave your vehicle in a shift
position other than the P (Park)
position. The vehicle will creep and
start abruptly if the accelerator pedal
is depressed by mistake. This may
cause serious injury or death.
CAUTION
If the vehicle is parked for a long period
of time, the battery discharges gradu-
ally. To avoid this occurrence, drive the
vehicle for approximately 30 minutes at
least once every two to three months.
Otherwise, the Lithium ion (Li-ion) bat- tery may be damaged. If the Li-ion
battery is completely discharged and
the hybrid system cannot be activated,
it is recommended that you contact an
INFINITI retailer.
High voltage parts and harnesses on the
hybrid vehicles emit approximately the same
amount of electromagnetic waves as the
conventional gasoline-powered vehicles or
home electronic appliances despite of their
electromagnetic shieldings. Unwanted noise
may occur in the reception of a mobile two-
way radio.
Charging the Li-ion battery while driving is
important. The vehicle cannot run if the Li-
ion battery is discharged. When in the N
(Neutral), D (Drive) or R (Reverse) position,
and while the accelerator pedal or the brake
pedal is not depressed, the Li-ion battery
does not recharge. Leaving the transmission
in the N (Neutral), D (Drive) or R (Reverse)
position, and while the accelerator pedal or
the brake pedal is not depressed for an
extended period of time (for example, when
the shift lever is in the D (Drive) position and
the vehicle is stopped only by the parking
brake), may discharge the Li-ion battery and
the hybrid system may automatically be
turned off.
JVO0114X
An air ventis located on the right and left
sides between the rear seat and rear door to
cool the Li-ion battery and DC/DC conver-
ter. If the vent is covered, the Li-ion battery
or DC/DC converter will overheat resulting
in reduced output performance of the hybrid
system. See “Lithium-ion (Li-ion) battery
and DC/DC converter air vent” (P.7-5).
Hybrid System OverviewHybrid System-11

0-10Illustrated table of contents
Warninglight Name
Page
12-volt battery charge
warning light 2-9
Anti-lock Braking System
(ABS) warning light2-10
Brake system warning light
(yellow)
2-10
Brake warning light (red) 2-10
Direct Response Hybrid®
System warning light 2-11
Forward Emergency Braking
(FEB) system warning light2-11
Low fuel warning light 2-12
Low tire pressure warning
light
2-12
Master warning light 2-13
Power steering warning light 2-14
Seat belt warning light 2-14
Supplemental air bag warn-
ing light2-14
Vehicle Dynamic Control
(VDC) warning light 2-15Indicator
light Name
Page
Approaching Vehicle Sound
for Pedestrians (VSP) OFF
indicator light 2-15
ECO drive indicator light 2-15
EV indicator light
2-15
Exterior light indicator 2-16
Front fog light indicator light 2-16
Front passenger air bag sta-
tus light2-16
High beam assist indicator
light (if so equipped)
2-16
High beam indicator light 2-16
Malfunction Indicator Light
(MIL)2-16
READY to drive indicator
light 2-17
Security indicator light 2-17
Turn signal/hazard indicator
lights2-17
Vehicle Dynamic Control
(VDC) off indicator light
2-17
WARNING AND INDICATOR LIGHTS

12-volt battery charge warning lightMaster warning lightFront fog light indicator light
Anti-lock Braking System (ABS) warning
lightPower steering warning lightFront passenger air bag status light
Seat belt warning light and chimeHigh beam assist indicator light (if so
equipped)
Brake system warning light (yellow)Supplemental air bag warning lightHigh beam indicator light
Brake warning light (red)Vehicle Dynamic Control (VDC) warning
lightMalfunction Indicator Light (MIL)
Direct Response Hybrid®System warn-
ing lightApproaching Vehicle Sound for Pedes-
trians (VSP) OFF indicator lightREADY to drive indicator light
Forward Emergency Braking (FEB) sys-
tem warning lightECO drive indicator lightSecurity indicator light
Low fuel warning lightEV indicator lightTurn signal/hazard indicator lights
Low tire pressure warning lightExterior light indicatorVehicle Dynamic Control (VDC) off in-
dicator light
CHECKING LIGHTS
With all doors closed, apply the parking
brake, fasten the seat belts and place the
ignition switch in the ON position without
starting the INFINITI Direct Response Hy-
brid
®System. The following lights (if so
equipped) will come on:
,or(red),,,,
The following lights (if so equipped) come on
briefly and then go off:
,or,,,,,(yellow) If any light does not come on or operates in a
way other than described, it may indicate a
burned-out bulb and/or a system malfunc-
tion. It is recommended you have the system
checked by an INFINITI retailer.
Some indicators and warnings are also
displayed in the vehicle information display
between the speedometer and tachometer.
(See “Vehicle information display” (P.2-18).)
WARNING LIGHTS
12-volt battery charge warn-
ing light
When the ignition switch is in the ON
position, the 12-volt battery charge warning
light illuminates. After starting the hybrid
system, the light turns off.
If the light continues to illuminate after
starting the hybrid system, it may indicate
the charging system is not functioning
Instruments and controls2-9
WARNING LIGHTS, INDICATOR
LIGHTS AND AUDIBLE REMINDERS

2-10Instruments and controls
properly. It is recommended you visit an
INFINITI retailer immediately.
CAUTION
The charging system may not be func-
tioning properly if the 12-volt battery
charge warning light comes on while the
hybrid system is running. The hybrid
system will stop operating when the
12-volt battery becomes discharged.
Immediately stop the vehicle in a safe
place and it is recommended you contact
an INFINITI retailer.
orAnti-lock Braking
System (ABS) warning light
When the ignition switch is in the ON
position, the Anti-lock Braking System
(ABS) warning light illuminates and then
turns off. This indicates the ABS is opera-
tional.
If the ABS warning light illuminates while the
hybrid system is running, or while driving, it
may indicate the ABS is not functioning
properly. Have the system checked. It is
recommended you visit an INFINITI retailer
for this service. If an ABS malfunction occurs, the anti-lock
function is turned off. The brake system then
operates normally, but without anti-lock
assistance. (See “Anti-lock Braking System
(ABS)” (P.5-129).)
Brake system warning light
(yellow)
This light will illuminate after the hybrid
system is started and then turns off after a
few seconds.
WARNING
If both the brake system warning light
(yellow) and the brake warning light
(red) illuminate when the parking brake
is released and the hybrid system is on,
do not drive the vehicle. More brake
pedal effort than normal will be required
and there will be a significant reduction
in brake performance, which could result
in an accident. Immediately stop the
vehicle in a safe location and it is
recommended you contact an INFINITI
retailer.
If the brake system warning light (yellow)
illuminates when the ignition switch is in the
ON position, it may indicate a malfunction in the brake system or one of the following
other functions.
.
Regenerative brake system
. Hill start assist system
. Rise-up and build-up function
It is recommended you see an INFINITI
retailer for an inspection as soon as possible.
A chime sounds if a malfunction occurs in the
brake system power supply.
orBrake warning light
(red)
This light functions for both the parking
brake and the foot brake systems.
Parking brake indicator:
When the ignition switch is in the ON
position, the light comes on when the
parking brake is applied.
Low brake fluid warning:
When the ignition switch is in the ON
position, the light warns of a low brake fluid
level. If the light comes on with the parking
brake not applied, stop the vehicle and
perform the following:
1. Check the brake fluid level. If brake fluid is low, add fluid and have the system
checked. It is recommended you have this
service performed by an INFINITI retai-

ler. (See “Brake fluid” (P.8-12).)
2. If the brake fluid level is correct, have the warning system checked. It is recom-
mended you have this service performed
by an INFINITI retailer.
Brake system malfunction warning:
If the brake warning light (red) and the
following warning light illuminate at the
same time when the parking brake is re-
leased and the brake fluid level is sufficient,
there may be a malfunction in the brake
system.
. Brake system warning light (yellow)
WARNING
If both the brake system warning light
(yellow) and the brake warning light
(red) illuminate when the parking brake
is released and the hybrid system is on,
do not drive the vehicle. More brake
pedal effort than normal will be required
and there will be a significant reduction
in brake performance, which could result
in an accident. Immediately stop the
vehicle in a safe location and it is
recommended you contact an INFINITI
retailer.
A chime sounds if a malfunction occurs in the brake system power supply.
.
Anti-lock Braking System (ABS) warning
light
— Avoid driving at high speed and sud-
den braking, and see an INFINITI
retailer as soon as possible for an
inspection.
WARNING
.Your brake system may not be work-
ing properly if the brake warning
light (red) is on. Driving could be
dangerous. If you judge it to be safe,
drive carefully to the nearest service
station for repairs. Otherwise, have
your vehicle towed because driving it
could be dangerous.
. Pressing the brake pedal with the
hybrid system stopped and/or low
brake fluid level may increase your
stopping distance and braking will
require greater pedal effort as well as
pedal travel.
. If the brake fluid level is below the
minimum or MIN mark on the brake
fluid reservoir, do not drive until the
brake system has been checked. It is
recommended you visit an INFINITI
retailer for this service.
Direct Response Hybrid®Sys-
tem warning light
When the ignition switch is in the ON
position, the Direct Response Hybrid®Sys-
tem (hybrid system) warning light illumi-
nates. After starting the hybrid system, the
hybrid system warning light turns off.
If the hybrid system warning light illuminates
while driving, it may indicate that there is a
malfunction in the electric motor and/or
other hybrid system components.
Stop your vehicle immediately and it is
recommended that you contact your
INFINITI retailer.
If the hybrid system warning light blinks
while driving, it may indicate that the Li-ion
battery charge is low and you cannot
continue to drive.
Do not allow the vehicle to coast when the
Li-ion battery is low or when the hybrid
system warning light blinks while driving.
The engine will not automatically start to
charge the Li-ion battery while the vehicle is
coasting.
Forward Emergency Braking
(FEB) system warning light
This light comes on when the ignition switch
is placed in the ON position. It turns off after
Instruments and controls2-11

2-14Instruments and controls
.SHIFT “P” warning
. Shift to Park - Li-ion battery low warning
. Shift to Park - Press brake and start
warning
. PUSH warning
. Key ID Incorrect warning
. Parking brake release warning
. Low washer fluid warning
. Door/trunk open warning
. Loose Fuel Cap warning
. Tire Pressure Low - Add Air warning
. Flat Tire - Visit dealer warning
. All-Wheel Drive (AWD) warning (if so
equipped)
. Headlight warning
. Hybrid system overheat warning
. Low oil pressure warning
. High temperature warning
. Adaptive Front lighting System (AFS)
warning (if so equipped)
. Intelligent Key system warning
. Chassis control warning
See “Vehicle information display” (P.2-18).
If the driver assist system warnings appear
in the vehicle information display, the master
warning light also illuminates. See “Lane
Departure Warning (LDW)/Lane Departure
Prevention (LDP)” (P.5-32), “Blind Spot
Warning (BSW)” (P.5-39), “Blind Spot Inter- vention®(BSI)” (P.5-47), “Back-up Collision
Intervention (BCI)” (P.5-59), “Distance Con-
trol Assist (DCA)” (P.5-93), “Forward Emer-
gency Braking (FEB)” (P.5-104) and
“Predictive Forward Collision Warning
(PFCW)” (P.5-112).
Power steering warning light
When the ignition switch is in the ON
position, the power steering warning light
illuminates. After starting the hybrid system,
the power steering warning light stays on for
a few seconds and turns off. This indicates
that Direct Adaptive Steering is operational.
Drive the vehicle after the power steering
warning light turns off.
If the power steering warning light illumi-
nates while driving, pull off the road to a
safe location and stop the vehicle. If the
power steering warning light turns off, you
can drive again. If the power steering
warning light continues to illuminate, it is
recommended you have Direct Adaptive
Steering checked by an INFINITI retailer.
(See “Power steering” (P.5-126).)
Seat belt warning light and
chime
The light and chime remind you to fasten
seat belts. The light illuminates whenever the ignition switch is pushed to the ON
position, and will remain illuminated until the
driver’s seat belt is fastened. At the same
time, the chime will sound for about 6
seconds unless the driver’s seat belt is
securely fastened.
The seat belt warning light for the front
passenger will illuminate if the seat belt is
not fastened when the front passenger’s
seat is occupied.
See “Seat belts” (P.1-9) for precautions on
seat belt usage.
Supplemental air bag warning
light
After pushing the ignition switch to the ON
position, the supplemental air bag warning
light will illuminate. The supplemental air bag
warning light will turn off after about 7
seconds if the supplemental front air bag
and supplemental side air bag, curtain side-
impact air bag systems and/or pretensioner
seat belt are operational.
If any of the following conditions occur, the
supplemental front air bag, supplemental
side air bag, supplemental curtain side-
impact air bag and pretensioner seat belt
needs servicing.
. The supplemental air bag warning light
remains on after approximately 7 sec-