2018 INFINITI Q70 HYBRID power steering

Turning the BSI system ON/OFF ......................... 5-43
How to enable/disable the BSI system .............. 5-44
BSI system limitations.............................................. 5-44
BSI driving situations................................................. 5-45
System temporarily unavailable ............................. 5-51
System malfunction ................................................... 5-52
System maintenance.................................................. 5-52
Back-up Collision Intervention (BCI) (if
so equipped) ...................................................................... 5-53 BCI system operation................................................ 5-55
Turning the BCI system ON/OFF........................ 5-60
How to enable/disable the BCI system.............. 5-60
BCI system limitations .............................................. 5-61
System temporarily unavailable ............................. 5-62
System malfunction ................................................... 5-63
System maintenance.................................................. 5-63
Cruise control (if so equipped) ..................................... 5-64 Precautions on cruise control ................................. 5-64
Cruise control operations......................................... 5-64
Intelligent Cruise Control (ICC) (if so equipped) ..... 5-66 How to select the cruise control mode................ 5-68
Vehicle-to-vehicle distance control mode........... 5-68
Conventional (fixed speed) cruise
control mode............................................................... 5-84
Distance Control Assist (DCA) (if so equipped) ..... 5-88 DCA system operation............................................. 5-90
Turning the DCA system ON/OFF....................... 5-93
How to enable/disable the DCA system............. 5-94
DCA system display and indicators....................... 5-94 DCA system limitations .......................................... 5-95
System temporarily unavailable ........................... 5-98
System malfunction.............................................. 5-100
System maintenance ............................................ 5-100
Forward Emergency Braking (FEB) (if
so equipped)................................................................... 5-101 FEB system operation ......................................... 5-103
Turning the FEB system ON/OFF................... 5-104
FEB system limitations........................................ 5-105
System temporarily unavailable ........................ 5-106
System malfunction.............................................. 5-107
System maintenance ............................................ 5-108
Predictive Forward Collision Warning (PFCW)
(if so equipped).............................................................. 5-108
PFCW system operation..................................... 5-110
Turning the PFCW system ON/OFF............... 5-111
PFCW system limitations..................................... 5-113
System temporarily unavailable ......................... 5-114
System malfunction............................................... 5-115
Sensor maintenance .............................................. 5-115
Break-in schedule.......................................................... 5-116
Fuel efficient driving tips ............................................ 5-116
Increasing fuel economy.............................................. 5-117
Parking/parking on hills .............................................. 5-118
Power steering............................................................... 5-119
Brake system ................................................................. 5-120 Braking precautions.............................................. 5-120
Parking brake break-in ........................................ 5-120

the road so the vehicle will move away
from the center of the road if it
moves.
4. Push the ignition switch to the OFF position.
WARNING
.If the hybrid system is not in the
READY to drive mode or is turned off
while driving, the power assist for the
steering will not work. Steering will
be harder to operate.
. When the power steering warning
light illuminates with the hybrid sys-
tem in the READY to drive mode,
there will be no power assist for the
steering. You will still have control of
the vehicle but the steering will be
harder to operate. Have the power
steering system checked. It is recom-
mended that visit an INFINITI retailer
for this service.
When the steering wheel is operated re-
peatedly or continuously while parking or
driving at a very low speed, or when the
steering wheel is operated keeping full-
steer, the power assist for the steering
wheel will be reduced. This is to prevent
overheating of the Hybrid EPS (Electrical
Power Steering) and protect it from getting
damaged. While the power assist is reduced,
steering wheel operation will become heavy.
but, this is not a malfunction. If the steering
wheel is still operated, the Hybrid EPS may
stop and the Hybrid EPS warning light will illuminate. Stop the hybrid system and push
the ignition switch to the “OFF” position. If
the steering wheel is not operated for a
while, the temperature of Hybrid EPS will go
down and the power assist level will return
to normal after starting the hybrid system.
Avoid repeating such steering wheel opera-
tions that could cause the electric power
steering system to overheat. You may hear a
operational noise from the vehicle when the
steering wheel is operated quickly this is not
malfunction.
Starting and driving5-119
POWER STEERING

5-122Starting and driving
illuminates the ABS warning light on the
instrument panel. The brake system then
operates normally, but without anti-lock
assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the
vehicle checked. It is recommended you visit
an INFINITI retailer for this service.
Normal operation
The ABS operates at speeds above 3 to 6
MPH (5 to 10 km/h).
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic pres-
sure. This action is similar to pumping the
brakes very quickly. You may feel a pulsation
in the brake pedal and hear a noise from
under the hood or feel a vibration from the
actuator when it is operating. This is normal
and indicates that the ABS is operating
properly. However, the pulsation may indi-
cate that road conditions are hazardous and
extra care is required while driving.The Vehicle Dynamic Control (VDC) system
uses various sensors to monitor driver inputs
and vehicle motion. Under certain driving
conditions, the VDC system helps to perform
the following functions.
.
Controls brake pressure to reduce wheel
slip on one slipping drive wheel so power
is transferred to a non slipping drive
wheel on the same axle.
. Controls brake pressure and engine or
mortor output to reduce drive wheel slip
based on vehicle speed (traction control
function).
. Controls brake pressure at individual
wheels and engine or motor output to
help the driver maintain control of the
vehicle in the following conditions:
— understeer (vehicle tends to not follow the steered path despite increased
steering input)
— oversteer (vehicle tends to spin due to certain road or driving conditions).
The VDC system can help the driver to
maintain control of the vehicle, but it cannot
prevent loss of vehicle control in all driving
situations.
When the VDC system operates, the VDC
warning light
in the instrument panel
flashes so note the following:
. The road may be slippery or the system
may determine some action is required to help keep the vehicle on the steered path.
. You may feel a pulsation in the brake
pedal and hear a noise or vibration from
under the hood. This is normal and
indicates that the VDC system is working
properly.
. Adjust your speed and driving to the road
conditions.
See “Vehicle Dynamic Control (VDC) warn-
ing light” (P.2-17).
If a malfunction occurs in the system, the
VDC warning light
illuminates in the
instrument panel. The VDC system automa-
tically turns off.
The VDC OFF switch is used to turn off the
VDC system. The VDC off indicator light
illuminates to indicate the VDC system is off.
When the VDC switch is used to turn off the
system, the VDC system still operates to
prevent one drive wheel from slipping by
transferring power to a non slipping drive
wheel. The VDC warning light
flashes if
this occurs. All other VDC functions are off,
except for rise-up and build-up and brake
force distribution, and the VDC warning
light
will not flash. The VDC system is
automatically reset to on when the ignition
switch is placed in the OFF position then
back to the on position.
See “Vehicle Dynamic Control (VDC) warn-
ing light” (P.2-17) and “Vehicle Dynamic
VEHICLE DYNAMIC CONTROL
(VDC) SYSTEM

Control (VDC) off indicator light” (P.2-20).
The computer has a built-in diagnostic
feature that tests the system each time you
start the INFINITI Direct Response Hybrid
®
System and move the vehicle forward or in
reverse at a slow speed. When the self-test
occurs, you may hear a “clunk” noise and/or
feel a pulsation in the brake pedal. This is
normal and is not an indication of a mal-
function.
ACTIVE TRACE CONTROL (if so
equipped)
This system senses driving based on the
driver’s steering and acceleration/braking
patterns, and individually controls the brak-
ing to each of the four wheels to help
smooth vehicle response.
When the INFINITI Drive Mode Selector is
set to the “SPORT” mode, the amount of
brake control provided by active trace con-
trol is reduced.
When the VDC OFF switch is used to turn
off the VDC system, the active trace control
system is also turned off.
If the active trace control is not functioning
properly, the Forward Emergency Braking
(FEB) system warning light illuminates in the
instrument panel.
RISE-UP AND BUILD-UP
The system gradually adjusts braking power
during normal braking to help provide an
enhanced brake feel.
BRAKE FORCE DISTRIBUTION
During braking while driving through turns,
the system optimizes the distribution of
force to each of the four wheels depending
on the radius of the turn.
WARNING
.The VDC system is designed to help
the driver maintain stability but does
not prevent accidents due to abrupt
steering operation at high speeds or
by careless or dangerous driving
techniques. Reduce vehicle speed
and be especially careful when driving
and cornering on slippery surfaces
and always drive carefully.
. The active trace control (if so
equipped), rise-up and build-up and
brake force distribution systems may
not be effective depending on the
driving condition. Always drive care-
fully and attentively.
. Do not modify the vehicle’s suspen-
sion. If suspension parts such as shock absorbers, struts, springs, sta-
bilizer bars, bushings and wheels are
not INFINITI recommended for your
vehicle or are extremely deteriorated,
the VDC system may not operate
properly. This could adversely affect
vehicle handling performance, and
the VDC warning light
may
illuminate.
. If brake related parts such as brake
pads, rotors and calipers are not
INFINITI recommended or are extre-
mely deteriorated, the VDC system
may not operate properly and the
VDC warning light
may illumi-
nate.
. If engine control related parts are not
INFINITI recommended or are extre-
mely deteriorated, the VDC warning
light
may illuminate.
. When driving on extremely inclined
surfaces such as higher banked cor-
ners, the VDC system may not oper-
ate properly and the VDC warning
light
may illuminate. Do not drive
on these types of roads.
. When driving on an unstable surface
such as a turntable, ferry, elevator or
ramp, the VDC warning light
may
illuminate. This is not a malfunction.
Restart the hybrid system after driv-
Starting and driving5-123

JVE0010X
WARNING
Always follow the instructions below.
Failure to do so could result in damage to
the charging system and cause personal
injury.
1. If the booster battery is in another vehicle
, position the two vehicles (and) to bring the 12-volt battery and
fuse box into close proximity to each
other.
Do not allow the two vehicles to touch. 2. Apply parking brake. Move the shift lever
to the P (Park) position. Switch off all
unnecessary electrical systems (light,
heater, air conditioner, etc.).
3. Connect jumper cables in the sequence as illustrated (
???).
For models with a steering wheel lock
mechanism: If the 12-volt battery is
disconnected or discharged, the steering
wheel will lock and cannot be turned.
Supply power using jumper cables be-
fore pushing the ignition switch and
disengaging the steering lock.
CAUTION
. Always connect positive (+) to posi-
tive (+) and negative (−) to body
ground (as illustrated) − not to the
12-volt battery.
. Make sure the jumper cables do not
touch moving parts in the engine
compartment and that clamps do
not contact any other metal.
4. Start the engine of the booster vehicle
and let it run for a few minutes.
5. Start the hybrid system of the vehicle being jump started
.
CAUTION
If the hybrid system does not start right
away, push the ignition switch to the
OFF position and wait 10 seconds
before trying again.
6. After starting your vehicle, carefully disconnect the negative cable and then
the positive cable (
???).
7. Put the battery cover and fuse cover on.
In case of emergency6-11

3. If engine overheating is caused by climb-ing a long hill on a hot day, run the engine
at a fast idle (approximately 1,500 rpm)
until the temperature gauge indication
returns to normal.
4. Get out of the vehicle. Look and listen for steam or coolant escaping from the
radiator before opening the hood. (If
steam or coolant is escaping, turn off the
hybrid system.) Do not open the hood
further until no steam or coolant can be
seen.
5. Open the engine hood.
WARNING
If steam or water is coming from the
engine, stand clear to prevent getting
burned.
6. Also check if the cooling fan is running. The radiator hoses and radiator should
not leak water. If coolant is leaking or the
cooling fan does not run, stop the hybrid
system.
WARNING
Be careful not to allow your hands, hair,
jewelry or clothing to come into contact
with, or get caught in, engine belts or the
engine cooling fan. The engine cooling
fan can start at any time.
7. After the engine cools down, check the coolant level in the reservoir tank with
the engine running. Add coolant to the
reservoir tank if necessary. Have your
vehicle repaired. It is recommended you
visit an INFINITI retailer for this service. When towing your vehicle, all State (Pro-
vincial in Canada) and local regulations for
towing must be followed. Incorrect towing
equipment could damage your vehicle. Tow-
ing instructions are available from an
INFINITI retailer. Local service operators
are familiar with the applicable laws and
procedures for towing. To assure proper
towing and to prevent accidental damage to
your vehicle, INFINITI recommends that you
have a service operator tow your vehicle. It is
advisable to have the service operator care-
fully read the following precautions.
WARNING
.
Never ride in a vehicle that is being
towed.
. Never get under your vehicle after it
has been lifted by a tow truck.
CAUTION
.When towing, make sure that the
transmission, axles, steering system
and powertrain are in working con-
dition. If any unit is damaged, dollies
must be used.
. Always attach safety chains before
In case of emergency6-13
TOWING YOUR VEHICLE

8 Do-it-yourself
Maintenance precautions ................................................ 8-2
Engine compartment check locations .......................... 8-3VQ35HR engine............................................................ 8-3
Engine cooling system...................................................... 8-5 Checking engine coolant level................................... 8-6
Changing engine coolant............................................ 8-6
Inverter cooling system.................................................... 8-7 Checking inverter coolant level ................................ 8-8
Changing inverter coolant.......................................... 8-8
Engine oil.....................................................................\
......... 8-8
Checking engine oil level ............................................ 8-8
Changing engine oil and filter................................... 8-9
Automatic Transmission Fluid (ATF).......................... 8-11
Power steering fluid........................................................ 8-11
Brake fluid...................................................................\
....... 8-12 Brake fluid .................................................................... 8-12
Window washer fluid...................................................... 8-12
12-volt battery ................................................................. 8-13 Checking battery fluid level..................................... 8-14
Jump starting............................................................... 8-15
Spark plugs ........................................................................\
8-15 Replacing spark plugs................................................ 8-15 Air cleaner........................................................................\
.. 8-16
Windshield wiper blades ............................................... 8-17
Cleaning....................................................................... 8-17
Replacing..................................................................... 8-17
Brakes..................................................................\
............... 8-18 Self-adjusting brakes............................................... 8-18
Brake pad wear warning........................................ 8-18
Fuses...................................................................\
................ 8-19 Engine compartment or trunk room ................... 8-19
Passenger compartment ....................................... 8-20
Intelligent Key battery replacement........................... 8-21
Lights........................................................................\
.......... 8-23 Headlights.................................................................. 8-24
Exterior and interior lights.................................... 8-24
Wheels and tires.............................................................. 8-26 Tire pressure .............................................................. 8-26
Tire labeling............................................................... 8-30
Types of tires............................................................. 8-32
Tire chains................................................................... 8-32
Changing wheels and tires..................................... 8-33

8-4Do-it-yourself
JVM0034X
1. Engine oil filler cap
2. Brake fluid reservoir
3. Fuse/fusible link holder
4. Window washer fluid reservoir
5. Power steering fluid reservoir
6. Inverter coolant reservoir
7. Air cleaner
8. Radiator filler cap
9. Engine oil dipstick
10. Engine coolant reservoir