14
GS450h_QG_OM30F38U_(U)
■Charging the hybrid battery (traction battery)
If the shift lever is in N, th e hybrid battery (traction battery) will not be charged even when
the engine is running. Therefore, if the vehicle is  left with the shift lever in N for a long period
of time, the hybrid battery (traction battery) will  discharge, and this may result in the vehicle
not being able to start.
■ Regenerative braking
In the following situations, kinetic energy is converted to electric energy and deceleration
force can be obtained in conjunction with the  recharging of the hybrid battery (traction bat-
tery).
● The accelerator pedal is released while dr iving with the shift lever in D or S.
● The brake pedal is depressed while driv ing with the shift lever in D or S.
■Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to move with the
“READY” indicator is illuminated. For safety, a pply the parking brake and make sure to shift
the shift lever to P when parked.
The following sounds or vibrations may occur when the hybrid system is operating and are
not a malfunction:
● Motor sounds may be heard from the engine compartment.
● Sounds may be heard from the hybrid battery (traction battery) behind the rear seats
when the hybrid system starts or stops.
● Relay operating sounds such as a snap or so ft clank will be emitted from the hybrid bat-
tery (traction battery), behind the rear seats, when the hybrid system is started or
stopped.
● Sounds from the hybrid system may be heard when the trunk lid is open.
● Sounds may be heard from the transmission wh en the gasoline engine starts or stops,
when driving at low spee ds, or during idling.
● Engine sounds may be heard when accelerating sharply.
● Sounds may be heard due to regenerative braking when the brake pedal is depressed or
as the accelerator  pedal is released.
● Vibration may be felt when the gasoline engine starts or stops.
● Cooling fan sounds may be heard from the air  intake vents on the both sides of the rear
seatback.
■ 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 warning light go off. If there is
only a small amount of fuel, the hybrid system  may not be able to start. (The standard amount
of fuel is about 2.6 gal. [10.0 L, 2.2 Imp.gal.] [except F SPORT models] or 2.6 gal. [9.9 L,
2.2 Imp.gal.] [F SPORT models], when the vehicl e is on a level surface. This value may vary
when the vehicle is on a slope. Add extra fuel when the vehicle is inclined.) 
53
GS450h_QG_OM30F38U_(U)
Tire Pressure Warning System
■The tire inflation pressure display function
The tire pressure detected by the tire pres-
sure warning system can be displayed on
the multi-information display.
The illustration used is intended as an
example, and may differ from the image
that is actually displayed on the multi-
information display.
■Initializing the tire pressure warning system
Turn the power switch to ON mode. 
Press   or   on the meter co ntrol switch and select  .
Press   or   on the meter control switch an d select “Vehicle Settings”. Then press
.
Press   or   on the meter control
switch and select “TPMS”. Then press
and hold   until a message is dis-
played.The message will be  displayed on the
meter and the tire pressure warning
light will blink slowly 3 times.
When the message disappears, ini-
tialization is complete.
Your vehicle is equipped with a tire pressure warning system that uses tire pressure warn-
ing valves and transmitters to detect low tire inflation pressure before serious problems
arise.
1
2
3
4 
What to do if...
93
GS450h_QG_OM30F38U_(U)
List of Warning/Indicator Lights 
Immediately stop the vehicle in a safe place and contact your Lexus dealer. Continu-
ing to drive the vehicle may be dangerous.
(U.S.A.)
Brake system warning light
(Canada)
Immediately stop the vehicle in a safe  place and contact your Lexus dealer.
Charging system warning light (F SPORT models)
Have the vehicle inspected by your Lexus dealer immediately.
(U.S.A.)Malfunction 
indicator lamp(Flashes)
“AFS OFF” indicator 
(if equipped)
(Canada)
(Flashes)
Brake hold operated indicator
SRS warning light(Flashes)(U.S.A.)Parking brake 
indicator
(U.S.A.)
ABS warning light(Flashes)
(Canada)
(Canada)Brake system warning light
Electric power steering 
system warning light
(Blinking 
and then 
continu-
ously on)
Tire pressure warning light
(Flashes)
PCS (Pre-Collision System) 
warning light (if equipped)
Slip indicator
Follow the correction procedures.
Low fuel level warning lightMaster warning light 
Seat belt reminder light
(Illuminates  without 
blinking)Tire pressure warning light*1
For further information, refer to the OWNER’S MANUAL. 
94
What to do if...
GS450h_QG_OM30F38U_(U)
See the OWNER’S MANUAL
Tu r n  s i g n a l  i n d i c a t o r(Flashes faster)
PCS (Pre-Collision System) 
warning light (if equipped)
Headlight indicator (U.S.A.)
BSM (Blind Spot Monitor) 
outside rear view mirror indi-
cators (if equipped)
Tail light indicator (Canada)BSM (Blind Spot Monitor) 
indicator (if equipped)
Headlight high beam indicatorBrake hold standby indicator
Automatic High Beam 
indicator (if equipped)Brake hold operated 
indicator
Cruise control indicatorSecurity indicator
Dynamic radar cruise control 
indicator (if equipped)Low outside temperature 
indicator
Cruise control “SET” indicator“READY” indicator
LKA (Lane-Keeping Assist) 
indicator (if equipped)EV indicator
Intuitive parking assist 
indicator (if equipped)
*2(U.S.A.)Parking brake 
indicator
“AFS OFF” indicator 
(if equipped)(Canada)
(Flashes)
Slip indicator“A I R  B A G  O N /
OFF” indicator
VSC OFF indicator
For further information, re fer to the OWNER’S MANUAL.