Page 54 of 628
541-1. For safe use
IS300h_EE(OM53B95E)
“PASSENGER AIR BAG” indi-
cator
This indicator light turns on when
the airbag system is on (only when
the power switch is in ON mode).
Airbag manual on-off switch
Insert the mechanical key into the
cylinder and rotate to the “OFF”
position.
The “OFF” indicator light turns on
(only when the power switch is in
ON mode).
Airbag manual on-off system
This system deactivates the front passenger airbag and front passenger
knee airbag.
Only deactivate the airbags when using a child restraint system on the
front passenger seat.
1
2
Deactivating the front seat passenger airbag and front passenger
knee airbag
Page 86 of 628

851-2. Hybrid system
1
For safety and security
IS300h_EE(OM53B95E)
If a warning light comes on, a warning message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In this case, try to start the system again. If the
“READY” indicator does not come on, contact any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started,
refuel the vehicle with at least enough gasoline to make the low fuel level warn-
ing light (P. 509) go off. If there is only a small amount of fuel, the hybrid sys-
tem may not be able to start. (The minimum amount of fuel to add to make the
low fuel level warning light go out is about 10 L [2.7 gal., 2.2 Imp. gal.], when
the vehicle is on a level surface. This value may vary when the vehicle is on a
slope.)
Electromagnetic waves
High voltage parts and cables on hybrid vehicles incorporate electromagnetic
shielding, and therefore emit approximately the same amount of electromag-
netic waves as conventional gasoline powered vehicles or home electronic
appliances.
Your vehicle may cause sound interference in some third party-produced radio
parts.
Hybrid battery (traction battery)
The hybrid battery (traction battery) has a limited service life. The lifespan of the
hybrid battery (traction battery) can change in accordance with driving style and
driving conditions.
Declaration of conformity
This model conforms to hydrogen emissions according to regulation ECE100
(Battery electric vehicle safety).
Page 91 of 628
90
IS300h_EE(OM53B95E)1-3. Theft deterrent system
The indicator light flashes after the
power switch has been turned off to
indicate that the system is operat-
ing.
The indicator light stops flashing
after the power switch has been
turned to ACCESSORY or ON
mode to indicate that the system has
been canceled.
System maintenance
The vehicle has a maintenance-free type immobilizer system.
Conditions that may cause the system to malfunction
If the grip portion of the key is in contact with a metallic object
If the key is in close proximity to or touching a key registered to the security
system (key with a built-in transponder chip) of another vehicle
Immobilizer system
The vehicle’s keys have built-in transponder chips that prevent the hybrid
system from starting if a key has not been previously registered in the
vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
Page 105 of 628
104
IS300h_EE(OM53B95E)2. Instrument cluster
Except F SPORT models
F SPORT models
The units used on the meters may differ depending on the target region.
Warning lights and indicators
The warning lights and indicators on the instrument cluster and center
panel inform the driver of the status of the vehicle’s various systems.
For the purpose of explanation, the following illustrations display all
warning lights and indicators illuminated.
Page 106 of 628

1052. Instrument cluster
2
Instrument cluster
IS300h_EE(OM53B95E)
Warning lights inform the driver of malfunctions in the indicated vehicle
systems.
*1: These lights turn on when the power switch is turned to ON mode to indicate
that a system check is being performed. They will turn off after the hybrid sys-
tem is on, or after a few seconds. There may be a malfunction in a system if
the lights do not come on, or turn off. Have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional.
*2: The light flashes to indicate a malfunction.
*3: This light illuminates on the center panel.
Warning lights
*1Brake system warning
light
(P. 507)*1Slip indicator
(P. 508)
*1Brake system warning
light (P. 507)*1 Automatic headlight lev-
eling system warning
light (P. 509)
*1Charging system warning
light (P. 507)Open door warning light
(P. 509)
*1Malfunction indicator
lamp (P. 507)Low fuel level warning
light (P. 509)
*1SRS warning light
(P. 508)
Driver’s and front passen-
ger’s seat belt reminder
light
(P. 509)
*1ABS warning light
(P. 508)*3Rear passengers’ seat belt
reminder lights (P. 509)
*1Electric power steering
system warning light
(P. 508)*1Master warning light
(P. 509)
*1, 2
(if
equipped)
Pre-crash safety system
warning light (P. 508)
*1Tire pressure warning
light
(P. 509)
Page 108 of 628

1072. Instrument cluster
2
Instrument cluster
IS300h_EE(OM53B95E)
*1: These lights turn on when the power switch is turned to ON mode to indicate
that a system check is being performed. They will turn off after the hybrid sys-
tem is on, or after a few seconds. There may be a malfunction in a system if
the lights do not come on, or turn off. Have the vehicle inspected by any
authorized Lexus dealer or repairer, or another duly qualified and equipped
professional.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when the system is turned off. The light flashes faster than
usual to indicate that the system is operating.
*4: In order to confirm operation, the BSM outside rear view mirror indicators
illuminate in the following situations:
• When the power switch is turned to ON mode while the BSM main switch
is set to ON.
• When the BSM main switch is set to ON while the power switch is in ON
mode.
If the system is functioning correctly, the BSM outside rear view mirror indi-
cators will turn off after a few seconds.
(if
equipped)
LDA (Lane Departure
Alert) indicator (P.
261)*8EV drive mode indicator
(P. 214)
*9
EV drive mode indicator
(P. 214)
*9
(if
equipped)
“SPORT S” indicator
(P. 283)
*8
Eco drive mode indicator
(P. 283)
*9
(if
equipped)
“SPORT S+” indicator
(P. 283)
*9Eco drive mode indicator
(P. 283)*8Snow mode indicator
(P. 217)
*8“SPORT” indicator
(P. 283)*9Snow mode indicator
(P. 217)
*9
(if
equipped)
“SPORT” indicator
(P. 283)
*1, 6“PASSENGER AIR
BAG” indicator
(P. 54)
Page 110 of 628
1092. Instrument cluster
2
Instrument cluster
IS300h_EE(OM53B95E)
*5: This light illuminates on the outside rear view mirrors.
*6: This light illuminates on the center panel.
*7: When the outside temperature is approximately 3°C (37°F) or lower, the indi-
cator will flash for approximately 10 seconds, then stay on.
*8: Except F SPORT models
*9: F SPORT models
CAUTION
If a safety system warning light does not come on
Should a safety system light such as the ABS and SRS warning light not come
on when you start the hybrid system, this could mean that these systems are not
available to help protect you in an accident, which could result in death or seri-
ous injury. Have the vehicle inspected by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional immediately if
this occurs.
Page 111 of 628
1102. Instrument cluster
IS300h_EE(OM53B95E)
Except F SPORT models
F SPORT models (when the main meter is in the center position)
Gauges and meters