2021 INFINITI Q50 maintenance

5 Starting and driving
Precautions when starting and driving ...................... 5-4Exhaust gas (carbon monoxide) .............................. 5-4
Three-way catalyst ..................................................... 5-5
Tire Pressure Monitoring System (TPMS) ........... 5-5
Avoiding collision and rollover ................................. 5-9
Off-road recovery ....................................................... 5-9
Rapid air pressure loss ............................................... 5-9
Drinking alcohol/drugs and driving ..................... 5-10
Intelligent All-Wheel Drive (AWD) driving
safety precautions (AWD models) ....................... 5-10
Push-button ignition switch ........................................ 5-11 Operating range for engine start function ........ 5-12
Push-button ignition switch operation ............... 5-12
Push-button ignition switch positions ................ 5-13
Emergency engine shut off .................................... 5-13
Intelligent Key battery discharge .......................... 5-14
Before starting the engine ........................................... 5-14
Starting the engine ......................................................... 5-15 Remote engine start (if so equipped) .................. 5-15
Driving the vehicle .......................................................... 5-16
Automatic transmission ........................................... 5-16
Parking brake .................................................................. 5-20
INFINITI Drive Mode Selector .................................... 5-21
STANDARD mode .................................................... 5-22
SPORT+ mode (if so equipped) ............................. 5-22 SPORT mode ............................................................ 5-22
SNOW mode ............................................................ 5-22
ECO mode ................................................................. 5-22
PERSONAL mode ................................................... 5-24
Active Lane Control (if so equipped) ........................ 5-25 Active Lane Control operation ............................ 5-27
Turning Active Lane Control ON/OFF ............ 5-28
How to enable/disable Active
Lane Control ............................................................. 5-29
Active Lane Control limitations ......................... 5-30
System temporarily unavailable .......................... 5-31
System malfunction ................................................ 5-31
System maintenance .............................................. 5-32
Lane Departure Warning (LDW)/Lane Departure
Prevention (LDP) (if so equipped) ............................. 5-33 LDW system operation ......................................... 5-34
How to enable/disable the LDW system ........ 5-35
LDP system operation (if so equipped) ............ 5-35
Turning the LDP system ON/OFF (if
so equipped) ............................................................. 5-36
How to enable/disable the LDP system (if
so equipped) ............................................................. 5-37
LDW/LDP system limitations ............................. 5-37
System temporarily unavailable .......................... 5-38
System malfunction ................................................ 5-39

System maintenance ................................................ 5-39
Blind Spot Warning (BSW) (if so equipped) ........... 5-40 BSW system operation ............................................ 5-42
How to enable/disable the BSW system ........... 5-42
BSW system limitations .......................................... 5-42
BSW driving situations ............................................ 5-43
System temporarily unavailable ............................ 5-46
System malfunction .................................................. 5-46
System maintenance ................................................ 5-47
Blind Spot Intervention
®(BSI) (if so equipped) ..... 5-48
BSI system operation ............................................... 5-49
Turning the BSI system ON/OFF ........................ 5-51
How to enable/disable the BSI system .............. 5-51
BSI system limitations ............................................. 5-51
BSI driving situations ............................................... 5-53
System temporarily unavailable ............................ 5-58
System malfunction .................................................. 5-58
System maintenance ................................................ 5-59
Back-up Collision Intervention (BCI) (if
so equipped) .................................................................... 5-60 BCI system operation .............................................. 5-62
Turning the BCI system ON/OFF ........................ 5-65
BCI system limitations ............................................. 5-66
System temporarily unavailable ............................ 5-67
System malfunction .................................................. 5-68
System maintenance ................................................ 5-68
Cruise control (if so equipped) .................................... 5-69
Precautions on cruise control ................................ 5-69 Cruise control operations ..................................... 5-70
Intelligent Cruise Control (ICC) (if so equipped) .... 5-71 How to select the cruise control mode ............. 5-73
Vehicle-to-vehicle distance control mode ....... 5-73
Conventional (fixed speed) cruise
control mode ............................................................ 5-87
Distance Control Assist (DCA) (if so equipped) .... 5-91 DCA system operation .......................................... 5-93
Turning the DCA system ON/OFF .................... 5-96
How to enable/disable the DCA system ......... 5-97
DCA system display and indicators ................... 5-97
DCA system limitations ......................................... 5-98
System temporarily unavailable ....................... 5-100
System malfunction ............................................. 5-101
System maintenance ........................................... 5-101
Forward Emergency Braking (FEB) ....................... 5-102 FEB system operation ........................................ 5-103
Turning the FEB system ON/OFF ................. 5-105
FEB system limitations ....................................... 5-105
System temporarily unavailable ....................... 5-107
System malfunction ............................................. 5-108
System maintenance ........................................... 5-108
Predictive Forward Collision
Warning (PFCW) ......................................................... 5-109
PFCW system operation ..................................... 5-111
Turning the PFCW system ON/OFF .............. 5-112
PFCW system limitations ................................... 5-114
System temporarily unavailable ........................ 5-116
System malfunction .............................................. 5-117

System maintenance .............................................. 5-117
Break-in schedule ......................................................... 5-118
Fuel Efficient Driving Tips .......................................... 5-118
Increasing fuel economy ............................................. 5-119
Intelligent All-Wheel Drive (AWD) (if
so equipped) .................................................................. 5-120
Parking/parking on hills .............................................. 5-122
Power steering .............................................................. 5-123 Electric power steering type ................................ 5-123
Direct Adaptive Steering type ............................. 5-123
Brake system .................................................................. 5-125
Braking precautions ................................................ 5-125
Parking brake break-in .......................................... 5-126
Brake assist .................................................................... 5-126
Brake assist ............................................................... 5-126
Anti-lock Braking System (ABS) ......................... 5-126
Vehicle Dynamic Control (VDC) system ................ 5-128 Brake force distribution ........................................ 5-128
Active trace control ...................................................... 5-129 Hill Start Assist system .............................................. 5-131
Chassis control .............................................................. 5-131
Sonar system (if so equipped) .................................. 5-132
Sonar system settings ......................................... 5-133
Sonar indicator ...................................................... 5-134
Cold weather driving .................................................. 5-134 Freeing a frozen door lock ................................ 5-134
Antifreeze ............................................................... 5-134
Battery .................................................................... 5-134
Draining of coolant water ................................. 5-134
Tire equipment ...................................................... 5-134
Special winter equipment ................................... 5-135
Driving on snow or ice ......................................... 5-135
Engine block heater (if so equipped) ............... 5-135
Active noise cancellation/Active
sound enhancement ................................................... 5-136 Active noise cancellation ..................................... 5-137
Active sound enhancement ................................ 5-137

5-6Starting and driving
Please note that the TPMS is not a sub-
stitute for proper tire maintenance, and it is
the driver’s responsibility to maintain correct
tire pressure, even if under-inflation has not
reached the level to trigger illumination of
the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, the
telltale will flash for approximately one
minute and then remain continuously illumi-
nated. This sequence will continue upon
subsequent vehicle start-ups as long as the
malfunction exists. When the malfunction
indicator is illuminated, the system may not
be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur
for a variety of reasons, including the
installation of replacement or alternate tires
or wheels on the vehicle that prevent the
TPMS from functioning properly. Always
check the TPMS malfunction telltale after
replacing one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS
to continue to function properly.Additional information
.Since the spare tire (if so equipped) is not
equipped with the TPMS, the TPMS
does not monitor the tire pressure of
the spare tire.
. The TPMS will activate only when the
vehicle is driven at speeds above 16
MPH (25 km/h). Also, this system may
not detect a sudden drop in tire pressure
(for example a flat tire while driving).
. The low tire pressure warning light does
not automatically turn off when the tire
pressure is adjusted. After the tire is
inflated to the recommended pressure,
the vehicle must be driven at speeds
above 16 MPH (25 km/h) to activate the
TPMS and turn off the low tire pressure
warning light. Use a tire pressure gauge
to check the tire pressure.
. The “Tire Pressure Low - Add Air”
warning appears in the vehicle informa-
tion display when the low tire pressure
warning light is illuminated and low tire
pressure is detected. The “Tire Pressure
Low - Add Air” warning turns off when
the low tire pressure warning light turns
off.
The “Tire Pressure Low - Add Air”
warning does not appear if the low tire
pressure warning light illuminates to
indicate a TPMS malfunction. .
The “Flat Tire - Visit dealer” warning (if
so equipped) appears in the vehicle
information display when the low tire
pressure warning light is illuminated and
one or more flat tires are detected.
. Tire pressure rises and falls depending on
the heat caused by the vehicle’s opera-
tion and the outside temperature. Do not
reduce the tire pressure after driving
because the tire pressure rises after
driving. Low outside temperature can
lower the temperature of the air inside
the tire which can cause a lower tire
inflation pressure. This may cause the
low tire pressure warning light to illumi-
nate. If the warning light illuminates in
low ambient temperature, check the tire
pressure for all four tires.
. You can also check the pressure of all
tires (except the spare tire) in the vehicle
information display. (See “Vehicle infor-
mation display” (P.2-18).)
. After the ignition switch is placed in the
ON position, it may take a period of time
for the tire pressure to be displayed while
the vehicle is driven. Depending on the
radio wave circumstance, tire pressure
may not correctly be displayed.
For additional information, see “Low tire
pressure warning light” (P.2-13) and “Tire
Pressure Monitoring System (TPMS)” (P.6-
3).

5-32Starting and driving
Action to take:
If the chassis control warning appears, pull
off the road to a safe location and stop the
vehicle. Turn the engine off and restart the
engine. If the chassis control warning con-
tinues to illuminate, have the system
checked. It is recommended you visit an
INFINITI retailer for this service.
SSD0453
SYSTEM MAINTENANCE
The lane camera unitfor Active Lane
Control is located above the inside mirror. To
keep the proper operation of Active Lane
Control and prevent a system malfunction,
be sure to observe the following:
. Always keep the windshield clean.
. Do not attach a sticker (including trans-
parent material) or install an accessory
near the camera unit.
. Do not place reflective materials, such as
white paper or a mirror, on the instru-
ment panel. The reflection of sunlight
may adversely affect the camera unit’s
capability of detecting the lane markers. .
Do not strike or damage the areas around
the camera unit. Do not touch the
camera lens or remove the screw located
on the camera unit. It is recommended
you contact an INFINITI retailer if the
camera unit is damaged due to an
accident.

.When the VDC system is turned off.
. When the INFINITI Drive Mode Selector
is turned to the SNOW mode.
Action to take:
When the above conditions no longer exist,
push the dynamic driver assistance switch
again to turn the LDP system back on.
Condition B
LDW system: If the vehicle is parked in direct
sunlight under high temperature conditions
(over approximately 104°F (40°C)) and then
started, the LDW system may be deacti-
vated automatically. The “high cabin tem-
perature” warning message will appear in
the vehicle information display.
LDP system: If the vehicle is parked in direct
sunlight under high temperature conditions
(over approximately 104°F (40°C)) and then
the LDP system is turned on, the LDP
system may be deactivated automatically.
The “high cabin temperature” message will
appear in the vehicle information display.
The LDW and LDP systems are not available
until the conditions no longer exist.
Action to take:
When the above conditions no longer exist,
the LDW system will resume automatically.
For the LDP system, push the dynamic driver
assistance switch
again to turn the LDP system back on.
SYSTEM MALFUNCTION
LDW system:
If the LDW system malfunc-
tions, it will cancel automatically, and the
LDW “malfunction” message will appear in
the vehicle information display.
LDP system: If the LDP system malfunc-
tions, it will cancel automatically. The LDP
“malfunction” message will appear in the
vehicle information display.
Action to take:
Stop the vehicle in a safe location, place the
vehicle in the P (Park) position, turn the
engine off and restart the engine. If the
“malfunction” message continues to appear,
have the system checked. It is recommended
you visit an INFINITI retailer for this service.
SSD0453
SYSTEM MAINTENANCE
The lane camera unitfor LDW/LDP
systems is located above the inside mirror.
To keep the proper operation of LDW/LDP
systems and prevent a system malfunction,
be sure to observe the following:
. Always keep the windshield clean.
. Do not attach a sticker (including trans-
parent material) or install an accessory
near the camera unit.
. Do not place reflective materials, such as
white paper or a mirror, on the instru-
ment panel. The reflection of sunlight
may adversely affect the camera unit’s
capability of detecting the lane markers.
Starting and driving5-39

JVS1122X
SYSTEM MAINTENANCE
The two radar sensorsfor the BSW
system are located near the rear bumper.
Always keep the area near the radar sensors
clean.
The radar sensors may be blocked by
temporary ambient conditions such as
splashing water, mist or fog.
The blocked condition may also be caused by
objects such as ice, frost or dirt obstructing
the radar sensors.
Check for and remove objects obstructing
the area around the radar sensors.
Do not attach stickers (including transparent
material), install accessories or apply addi- tional paint near the radar sensors.
Do not strike or damage the area around the
radar sensors.
It is recommended you visit an INFINITI
retailer if the area around the radar sensors
is damaged due to a collision.
Radio frequency statement
For USA
FCC ID: OAYSRR3B
This device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
(1) this device may not cause harmful
interference, and
(2) this device must accept any interference
received, including interference that may
cause undesired operation.
CAUTION TO USERS
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
For Canada
This device complies with Industry Canada
licence-exempt RSS standard(s). Operation
is subject to the following two conditions:
(1) this device may not cause interference,
and (2) this device must accept any inter- ference, including interference that may
cause undesired operation of the device.
Frequency bands: 24.05 – 24.25 Ghz
The field strength of SRR3-B is below 250
millivolts/m measured at 3 metres with an
average detector.
This device contains licence-exempt trans-
mitter(s)/receiver(s) that comply with In-
novation, Science and Economic
Development Canada’s licence-exempt
RSS(s). Operation is subject to the follow-
ing two conditions:
1. This device may not cause interference.
2. This device must accept any interference,
including interference that may cause un-
desired operation of the device.
Radiofrequency radiation exposure infor-
mation:
This equipment complies with radiation
exposure limits set forth for an uncontrolled
environment. This equipment should be
installed and operated with minimum dis-
tance of 20 cm between the radiator and
your body.
Starting and driving5-47

5-58Starting and driving
JVS0826X
Vehicle information display
Dynamic driver assistance switch
SYSTEM TEMPORARILY UNA-
VAILABLE
Under the following conditions, a chime will
sound, the “currently unavailable” warning
message will appear in the vehicle informa-
tion display
and the BSI system will be
turned off automatically. The BSI system will
not be available until the conditions no
longer exist.
. When the VDC system (except TCS
function) or ABS operates.
. When the VDC system is turned off. .
When the INFINITI Drive Mode Selector
is turned to the SNOW mode.
Action to take:
When the above conditions no longer exist,
push the dynamic driver assistance switch
again to turn the BSI system back on.
When radar blockage is detected, the BSI
system will be turned off automatically, a
chime will sound and the “side radar ob-
struction” warning message will appear in
the vehicle information display
.
The BSI system is not available until the
conditions no longer exist. For additional
information, see “System maintenance”
(P.5-59).
Action to take:
When the above conditions no longer exist,
turn the BSI system on again. If the “side
radar obstruction” warning message ap-
pears even after the BSI system is turned
on again, stop the vehicle in a safe location,
place the shift lever in the P (Park) position
and turn the engine off. Check for and
remove objects obscuring the radar sensors
on the rear bumper, and restart the engine.
If the vehicle is parked in direct sunlight
under high temperature conditions (over
approximately 104°F (40°C)) and then the
BSI system is turned on, the BSI system may
be deactivated automatically. The “high
cabin temperature” warning message will appear in the vehicle information display
.
Action to take:
When the interior temperature is reduced,
push the dynamic driver assistance switch
again to turn the BSI system back on.
SYSTEM MALFUNCTION
When the BSI system malfunctions, it will be
turned off automatically, a chime will sound,
and the system “malfunction” warning mes-
sage with the driver assist system blind spot
indicator (orange) will appear in the vehicle
information display.
Action to take:
Stop the vehicle in a safe location and place
the shift lever in the P (Park) position. Turn
the engine off and restart the engine. If the
system “malfunction” warning message with
the driver assist system blind spot indicator
(orange) continues to be displayed, have the
BSI system checked. It is recommended you
visit an INFINITI retailer for this service.