Smart key YAMAHA NMAX 155 2021 User Guide

Smart key system
3-8
3taken place), the main switch can be
turned while the smart key system indi-
cator light is on (approximately 4 sec-
onds).
WARNING
EWA18720
Never turn the main switch to
“OFF”, “ ”, or “OPEN” while the ve-
hicle is movin
g. Otherwise the elec-
trical systems will b e switched off,
which may result in loss of control or
an acci dent.TIPDo not push the main switch knob re-
peatedly or turn the main switch back
and forth excessively (beyond normal
use). To protect the main switch from
damage, the smart key system will
temporarily disable, and the smart key
system indicator light will flash. If this
occurs, wait until the indicator light
stops flashing, and then operate the
main switch.The main switch positions are de-
scribed below.
EAU76502
ON
All electrical circuits are supplied with
power, and the engine can be started.
To turn the vehicle power on1. Turn the smart key on and bring it
within operating range.
2. Push the main switch knob and the smart key indicator light will
come on for approximately 4 sec-
onds.
3. While the smart key system indi- cator light is on, turn the main
switch to “ON”. All of the turn sig-
nal lights will flash twice and the
vehicle power will turn on.
TIPIf the vehicle battery voltage is
low, the turn signal lights will not
flash.
 See “Emergency mode” on page
9-38 for information on turning the
vehicle power on without the
smart key.
EAU76511
OFF
All electrical systems are off.
To turn the vehicle power off1. With the smart key turned on and
within operating range, turn the
main switch to “OFF”.
1. Push.
2. Turn.1 2
1. Turn.
1
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Smart key system
3-9
3
2. The turn signal lights flash once
and the vehicle power turns off.
TIPWhen the main switch is turned to

confirmed (the smart key is either out-
side operation range or has been
turned off), the beeper will sound for 3
seconds and the smart key system in-
dicator light will flash for 30 seconds. During this 30 seconds, the main
switch can be freely operated.
 After 30 seconds, the vehicle
power will turn off automatically.
 To turn the vehicle power off im-
mediately, push the main switch
knob four times within 2 seconds.
EAU76534
OPEN
The fuel tank cap lid and the seat can
be opened:
1. With the smart key on and within operating range, push the main
switch knob.
2. While the smart key system indi- cator light is on, turn the main
switch to “OPEN”. To open the fuel tank cap li
d
Push the “FUEL” button to open the
fuel tank cap lid.
After refueling, push the fuel tank cap
lid until it is closed.
TIP See page 6-14 for fuel tank cap re-
moval and installation procedures.To open the seat
Push the “SEAT” button, and then lift
the rear of the seat.
To close the seat, push down on the
rear to lock it in position.TIP Make sure that the seat is securely
closed before starting off.
 The seat can also be opened with
the mechanical key. (See page
6-19.)
1. Push.
2. Turn.
1. “FUEL” button1
2
1
1.
1
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Smart key system
3-10
3Open position remin
der
To prevent you from accidentally leav-
ing the vehicle unlocked by walking
away with the main switch still in the
“OPEN” position, the smart key system
beeper will sound under the following
conditions.  When the main switch has been in
the open position for 3 minutes
 If the smart key is turned off while
the main switch is in the open po-
sition
 If you walk out of range of the
smart key system with the main
switch in the open position
If the beeper sounds after 3 minutes,
turn the main switch to “OFF” or “ ”. If
the beeper sounds because the smart
key was turned off or moved out of
range, turn the smart key on and walk
back into range.
TIP The beeper will turn off after 1
minute.
EAU76521
“ ” (lock)
The steering is locked and all electrical
systems are off.
To lock the steering1. Turn the handlebar all the way to
the left.
2. With the smart key turned on and within operating range, push the
main switch knob.
3. While the smart key system indi- cator light is on, push and turn the
main switch to “ ”.
TIPIf the steering will not lock, try turning
the handlebar back to the right slightly.To unlock the steering1. With the smart key turned on andwithin operating range, push the
main switch knob.
2. While the smart key system indi- cator light is on, push and turn the
main switch to the desired posi-
tion.
1. Push.
2. Turn.1 2
1. Push.
2. Turn.12
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Instrument and control functions
6-1
6
EAU77123
In dicator lig hts and warning
lig hts
EAU88900
Turn si gnal in dicator li ghts “ ”
an d“”
Each indicator light will flash when its
corresponding turn signal lights are
flashing.
EAU88910
Hi gh beam in dicator li ght “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU88712
Malfunction in dicator li ght
(MIL) “ ”
This light comes on or flashes if a prob-
lem is detected in the engine or other
vehicle control system. If this occurs,
have a Yamaha dealer check the on-
board diagnostic system. The electri-
cal circuit of the warning light can be
checked by turning the vehicle power
on. The light should come on for a few
seconds, and then go off. If the light
does not come on initially when the ve-
hicle power is turned on, or if the light
remains on, have a Yamaha dealer
check the vehicle.
NOTICE
ECA26820
If the MIL starts flashin g, re duce en-
g ine spee d to prevent exhaust sys-
tem damag e.TIPThe engine is sensitively monitored by
the on-board diagnostic system to de-
tect deterioration and malfunction of
the emission control system. Therefore
the MIL may come on or flash due to
vehicle modifications, lack of mainte-
nance, or excessive/improper use of
the vehicle. To prevent this, observe
these precautions.
 Do not attempt to modify the soft-
ware of the engine control unit.
 Do not add any electrical acces-
sories that interfere with engine
control.
 Do not use aftermarket accesso-
ries or parts such as suspension,
spark plugs, injectors, exhaust
system, etc.
 Do not change the drivetrain
specifications (chain, sprockets,
wheels, tires, etc.).
1. Left turn signal indicator light “ ”
2. Incoming notification indicator light “ ”
3. Traction control system indicator
light “ ”
4. ABS warning light “ ”
5. High beam indicator light “ ”
6. Malfunction indicator light “ ”
7. Stop and Start System indicator light “ ”
8. Smart key system indicator light “ ”
9. Incoming call indicator light “ ”
10.Right turn signal indicator light “ ”
4
110
5
6
7
8
23 9
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Instrument and control functions
6-2
6 
Do not remove or alter the O2 sen-
sor, air induction system, or ex-
haust parts (catalysts or EXUP,
etc.).
 Maintain V-belt and drive belt (if
equipped) properly.
 Maintain correct tire pressure.
 Do not operate the vehicle in an
extreme manner. For example, re-
peated or excessive opening and
closing of the throttle, racing,
burnouts, wheelies, etc.
EAU88890
ABS warnin g li ght “ ”
This warning light comes on when the
vehicle is first turned on, and goes off
after starting riding. If the warning light
comes on while riding, the anti-lock
brake system may not work correctly.
WARNING
EWA16043
If the ABS warnin g lig ht does not
turn off after reachin g 10 km/h (6
mi/h), or if the warnin g li ght comes
on while ri din g:
 Use extra caution to avoi d pos-
si ble wheel lock d uring emer-
g ency brakin g. 
Have a Yamaha dealer check
the vehicle as soon as possib le.
TIPThe ABS warning light may come on
while revving the engine with the vehi-
cle on its centerstand, but this does
not indicate a malfunction.
EAU88930
Traction control system indicator
li g ht “ ”
This indicator light will flash when trac-
tion control has engaged.
If the traction control system is turned
off, this indicator light will come on.
(See page 6-13.)TIPWhen the vehicle is turned on, the light
should come on for a few seconds and
then go off. If the light does not come
on, or if the light remains on, have a
Yamaha dealer check vehicle.
EAUN2770
Smart key system in dicator
li g ht “ ”
This indicator light communicates the
status of the smart key system. When
the smart key system is operating nor-
mally, this indicator light will be off. If
there is an error in the smart key sys-
tem, the indicator light will flash. The
indicator light will also flash when com-
munication between the vehicle and
smart key takes place and when cer-
tain smart key system operations are
carried out.
EAUN2830
Stop an d Start System in dicator
li g ht “ ”
This indicator light comes on when the
Stop and Start System activates. The
indicator light will flash when the en-
gine is automatically stopped by the
Stop and Start System.TIPEven if the Stop and Start Switch is set
to Ž, this indicator light may not
come on. (See page 4-1.)
A
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Operation and important ri din g points
8-4
8
EAUW4891
Parkin g When parking, turn off the Stop and
Start System and then stop the engine.
After turning off the main switch, be
sure to turn off the smart key and take
it with you.
WARNING
EWA18840
 Since the en gine an d exhaust
system can b ecome very hot,
park in a place where pe destri-
ans or chil dren are not likely to
touch them an d b e burne d.
 Do not park on a slope or on soft
groun d, otherwise the vehicle
may overturn, increasin g the
risk of a fuel leak an d fire.
 Do not park near grass or other
flamma ble materials which
mi ght catch fire.
 If the Stop an d Start System is
left turne d on, the b attery could
b ecome dischar ged an d it may
not be possi ble to restart the
en gine due to insufficient b at-
tery volta ge.
TIPEven when the vehicle is parked in a lo-
cation partitioned by a fence or the
glass window of a shop, if the smart
key is within operating range, other
people will be able to start the engine
and operate the vehicle. Please turn
the smart key off when leaving the ve-
hicle. (See page 3-8.)
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Periodic maintenance an d a djustment
9-30
9
If a fuse is blown, replace it as follows. 1. Turn off the electrical circuit in question, and then turn off the
main switch.
2. Remove the panel C. (See page 9-7.) 3. Remove the blown fuse, and then
install a new fuse of the specified
amperage. WARNING! Do not
use a fuse of a hi gher ampera ge
ratin g than recommen ded to
avoi d causin g extensive dam-
a g e to the electrical system an d
possi bly a fire.
[EWA15132]
4. Turn the main switch on, and then
turn on the electrical circuit in
question to check if the device op-
erates.TIPIf the fuse immediately blows again,
have a Yamaha dealer check the elec-
trical system.5. Install the panel C. (See page 9-7.)
1. Signaling system fuse
2. Terminal fuse 1
3. Smart key system fuse
4. ABS motor fuse
5. ABS solenoid fuse
6. Spare fuse
7. Fuel injection system fuse
8. Backup fuse
9. Main fuse
10.Ignition fuse
11.Headlight fuse
12.ABS control unit fuse1
6
2
3
4
5
7
8
9
11
12
610
Specified
fuses:
Main fuse: 30.0 A
Terminal fuse 1:
5.0 A
Headlight fuse: 7.5 A
Signaling system fuse: 7.5 A
Ignition fuse:
7.5 A
Smart key system fuse: 2.0 A
ABS motor fuse: 30.0 A
Fuel injection system fuse:
7.5 A
ABS solenoid fuse: 15.0 A
ABS control unit fuse: 2.0 A
Backup fuse:
7.5 A
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Periodic maintenance an d a djustment
9-33
9 10. Close the seat.
EAU60701
Trou
bleshootin gAlthough Yamaha vehicles receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition systems,
for example, can cause poor starting
and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your vehicle re-
quire any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the vehicle prop-
erly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWA15142
When checkin g the fuel system, d o
not smoke, an d make sure there are
no open flames or sparks in the ar-
ea, inclu din g pilot lig hts from water heaters or furnaces. Gasoline or
g
asoline vapors can i gnite or ex-
plod e, causin g severe injury or prop-
erty damag e.
EAU76551
Smart key system trou bleshootin g
Please check the following items when
the smart key system does not work.  Is the smart key turned on? (See
page 3-4.)
 Is the smart key battery dis-
charged? (See page 3-6.)
 Is the smart key battery installed
correctly? (See page 3-6.)
 Is the smart key being used in a lo-
cation with strong radio waves or
other electromagnetic noise? (See
page 3-1.)
 Are you using the smart key that is
registered to the vehicle?
 Is the vehicle battery discharged?
When the vehicle battery is dis-
charged, the smart key system will
not operate. Please have the vehi-
cle battery charged or replaced.
(See page 9-28.)
Tightenin g torque:
Grab bar bolt:
17 N·m (1.7 kgf·m, 13 lb·ft)
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Periodic maintenance an d a djustment
9-34
9
If the smart key system does not work
after checking the above items, have a
Yamaha dealer check the smart key system.
TIPSee Emergency mode on page 9-38
for information on starting the engine
without the smart key.
EAU76843
Stop an d Start System trou ble-
shootin g
If a problem occurs, check the follow-
ing before taking the vehicle to a
Yamaha dealer.
The Stop an d Start System in dicator
lig ht does not come on.
1. Is the main switch turned on?
2. Is the Stop and Start System switch set to “ ”?
3. Was the engine warmed up suffi- ciently after starting?
4. After the engine was warmed up, was the engine left idling for a cer-
tain period of time?
5. Did the vehicle travel at a speed of 10 km/h or higher? Even if the preceding conditions are
met, the Stop and Start System may
not activate in order to preserve bat-
tery power. In this case, continue to
drive the vehicle.
In addition, the Stop and Start System
indicator light does not come on if the
engine trouble warning light is on.
If the Stop and Start System indicator
light still does not come on after you
checked the preceding conditions,
have a Yamaha dealer check the vehi-
cle as soon as possible.
The Stop an
d Start System in dicator
li g ht comes on, b ut the engine does
not stop automatically. 1. Was the vehicle stopped com- pletely?
The engine may not stop automat-
ically until the vehicle is stopped
for a certain period of time. Try
bringing the vehicle to a complete
stop.
2. Is the throttle grip turned? The engine does not stop auto-
matically if the throttle grip is not in
the fully closed position. Turn the throttle grip to the fully
closed position.
If the engine still does not stop auto-
matically after you checked the pre-
ceding conditions, have a Yamaha
dealer check the vehicle as soon as
possible.
After the eng ine was stopped b y the
Stop an d Start System, the en gine
d oes not restart even if the throttle
g rip is turne d.
1. Is the Stop and Start System switch set to “ ”?
If the Stop and Start System
switch is set to “ ” while the Stop
and Start System is activated, the
Stop and Start System will be
turned off.
2. Was the sidestand operated? When the sidestand is lowered,
the Stop and Start System is de-
activated.
3. Was the engine left stopped by the Stop and Start System for a
long period of time?
A
AA
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Periodic maintenance an d a djustment
9-38
9
EAU76561
Emer gency mo de When the smart key is lost or dam-
aged, or its battery has discharged, the
vehicle can still be turned on and the
engine started. You will need the smart
key system identification number.
To operate the vehicle in emer gency
mo de
1. Stop the vehicle in a safe place and turn the main switch to “OFF”.
2. Push the main switch knob for 5 seconds until the smart key sys-
tem indicator light flashes once,
then release it. Repeat two more
times. The smart key system indi-
cator light will come on for three
seconds to indicate the transition
to emergency mode. 3. After the smart key system indica-
tor light goes off, input the identifi-
cation number as follows.
4. Inputting the identification number is done by counting the number of
flashes of the smart key system in-
dicator light. For example, if the identification
number is 123456:
Push and hold the knob.

The smart key system indicator
light will start to flash.

Release the knob after the smart
key system indicator light flashes
once.

The first digit of the identification
number has been set as “1”.

Push and hold the knob again.

1. Smart key system indicator light “ ”
1. Identification number card
1
868588
1
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