2011 Lexus GS350 steering

5
When trouble arises
535
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Have the vehicle inspected immediately.
Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
(U.S.A.)
(Canada)
Malfunction indicator lamp Malfunction in:
• The emission control system;
• The electronic engine control system;
• The electronic throttle control system; or
• The automatic transmission control system.
SRS warning lightMalfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)
(Canada)
ABS warning lightMalfunction in:
•The ABS; or
• The brake assist system.
(GS460)
ECB (Electronically controlled brake system) warning light Malfunction in the electronically controlled brake system.
Electric power steering system warning lightMalfunction in the EPS.
“PCS” warning light (if equipped)
Malfunction in the pre-collision system.

5
When trouble arises
539
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
■Electric power steering system warning light
When the voltage is low or drops, the electric power steering system warning light
may come on.
■When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire
pressure warning reset switch does not turn off the tire pressure warning light.
■The tire pressure warning light may turn on due to natural causes
The tire pressure warning light may turn on due to natural causes such as natural air
leaks or tire inflation pressure changes caused by temperature. In this case, adjust-
ing the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with the tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off even
though the flat tire is replaced with the spare tire. Replace the spare tire with the
repaired tire and adjust the proper tire inflation pressure. The tire pressure warning
light will turn off after a few minutes.

5
When trouble arises
541
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
CAUTION
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Vehicles with standard tires:
• Stop your vehicle in a safe place as soon as possible. Adjust the tire inflationpressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure adjustment, it is probable that you have a flat tire. Check the tires. If the tire is
flat, change to the spare tire and have the flat tire repaired by the nearest
Lexus dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
●Vehicles with run-flat tires:
• Decelerate to the lowest appropriate speed as soon as possible. Do not driveover 55 mph (90 km/h).
• Check and adjust the tire inflation pressure immediately.
• If the tire pressure warning light comes on even after tire inflation pressure
adjustment, it is probable that you have a flat tire. Have the tire replaced by
the nearest Lexus dealer.
• Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

5
When trouble arises
545
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Have the vehicle inspected immediately.
A buzzer sounds and a warning message is shown on the multi-informa-
tion display. Failure to investigate the cause of the following warnings may
lead to the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Lexus dealer immediately.
Wa r n i n g m e s s a g eDetails
Malfunction in the automatic headlight leveling sys-
tem.
Malfunction in the rear lights system.
(Flashing)
Malfunction in the steering lock system.

5
When trouble arises
547
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Wa r n i n g m e s s a g eDetails
(Flashing)
(If equipped)
Malfunction in the radar cruise control system. Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
Malfunction in the charging system.
Malfunction in the power steering system.
Malfunction in the brake system.
Malfunction in the ABS.

548
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Have the vehicle inspected immediately.Failure to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Wa r n i n g m e s s a g eDetails
(GS460)
Malfunction in the VGRS.
(If equipped, steering guide symbol and
arrows are flashing)
The steering sensor cable is broken and signals can-
not be received.

5
When trouble arises
553
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
Other messagesIf the following message is displayed, take appropriate action and confirm
that the message has disappeared.
MessageDetails
(If equipped)
Calibrate the neutral position of the steering wheel.
■Initializing the steering sensor
Use one of the following methods.
●With the vehicle stopped, turn the steering wheel all the way to the left and right.
(The order is not important.)
●Drive for more than 5 minutes on an un-crowded road with as few curves and
corners as possible.
If the steering guide symbol disappears, the steering sensor has been initialized. If
the steering guide symbol does not disappear, have the vehicle checked by your
Lexus dealer.

556
5-2. Steps to take in an emergency
GS_G_U (OM30C11U)
October 28, 2011 5:15 pm
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection procedure

An open door has
been closed and
the “ENGINE
START STOP”
switch has been
turned twice to
the ACCES-
SORY mode from
OFF.
Press the
“ENGINE
START
STOP”
switch while
applying the
brakes.

(Flashing)
The steering lock
has not released
within 3 seconds
of pressing the
“ENGINE START
STOP” switch.
The “ENGINE
START STOP”
switch indicator
will flash green for
15 seconds.Press the
“ENGINE
START
STOP”
switch again
while turn-
ing the
steering
wheel with
the brake
pedal
depressed.
Once
(Comes on for 60 seconds)The electronic key
does not operate
properly.
→ P. 5 7 1

(Comes on for 10 seconds)