2013 Lexus GS450h Brake hold

703
GS450h_U (OM30D01U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
XIf the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the hybrid system.
XIf the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or
press it briefly 3 times or more in
succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehi-
cle in the normal way, stop the ve hicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or more
or press briefly 3 times or more
4
CAUTION
■If the hybrid system has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as
possible before turning off the hybrid system.
5
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7137-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
(Flashes)
(If equipped)
Pre-collision system warning light Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system
is not malfunctioning:
• The light will flash quickly when the system is operating. (→ P. 2 9 6 )
• The light will turn on when the pre-collision system is dis- abled. ( →P. 2 9 7 )
• The light will flash when the system cannot temporarily be used. ( →P. 7 3 5 )
Slip indicator
Indicates a malfunction in:
• The VSC system; or
•The TRAC system
The light will flash when the VSC or the TRC system is operat-
ing.
(Flashes)
(If equipped)
“A F S O F F ” i n d i c a t o r Indicates a malfunction in the adaptive front-lighting system
(Flashes)
Brake hold operated indicatorIndicates a malfunction in the brake hold system
(Flashes)(U.S.A.)
(Flashes)
(Canada)
Parking brake indicator Indicates a malfunction in the parking brake system
Warning lightWarning light/Details
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7187-2. Steps to take in an emergency
GS450h_U (OM30D01U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■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 a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change
it with 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.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
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7257-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system;or,
• The seat belt pretensioner system
Indicates a malfunction in:
•The ABS; or,
• The brake assist system
Indicates a malfunction in the brake hold system
Indicates a malfunction in the brake hold system Depress the brake pedal.
Warning messageDetails
(U.S.A.)
(Canada)
(Flashes)
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7307-2. Steps to take in an emergency
GS450h_U (OM30D01U)
Indicates that the parking
brake is still engagedIf the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the parking brake is
still engaged.
Release the parking
brake.
Indicates that the parking
brake system has over-
heatedWait until the system
cools down.
Indicates that the brake
hold system is not hold
the vehicle when the
vehicle is on a steep
incline
Use the brake hold sys-
tem when it becomes
available.
Indicates that the brake
hold system is unable to
cancel the brake hold
function
Depress the brake pedal.
Warning messageDetailsCorrection procedure
(Flashes)
(U.S.A.)
(Flashes)
(Canada)
(Flashes)
(Flashes)
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7317-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
Indicates that the brake
hold system is not avail-
ableThe reason the brake
hold system is not avail-
able may be displayed.• Close the driver’s door.
• Fasten the driver’s seatbelt.
• Close the trunk and hood.
Indicates that the brake
hold system is not avail-
ableThe reason the brake
hold system is not avail-
able may be displayed.• Depress the brakepedal.
• Close the driver’s door.
• Fasten the driver’s seat belt.
Indicates that the parking
brake is set automatically
while the brake hold sys-
tem is holding the brakes
Release the parking
brake.
Warning messageDetailsCorrection procedure
(Flashes)
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7397-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
A warning message is shown on the multi-information display. After taking
the specified steps to correct the suspected problem, check that the
warning message goes off.
Follow the correction procedures.
Warning messageDetailsCorrection procedure
Indicates that the brake
hold system is not hold
the vehicle when the
vehicle is on a slippery
road
Use the brake hold sys-
tem when it becomes
available.
Indicates that the washer
fluid level is lowAdd washer fluid.
Indicates that all mainte-
nance according to the
driven distance on the
maintenance schedule
*
should be performed
soon.If necessary, perform
maintenance.
Comes on approxi-
mately 4500 miles
(7200 km) after the
maintenance data has
been reset.
(U.S.A. only)
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7637-2. Steps to take in an emergency
GS450h_U (OM30D01U)
7
When trouble arises
One of the following may be the cause of the problem:
●One or both of the 12-volt battery terminals may be disconnected.
●The 12-volt battery may be discharged. (→P. 7 7 0 )
Contact your Lexus dealer if the problem cannot be repaired, or if repair proce-
dures are unknown.
When the hybrid system does not start, the following steps can be used as
an interim measure to start the hybrid system if the power switch is func-
tioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while depressing
the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the system
may be malfunctioning. Have the vehicle inspected by your Lexus dealer.
The interior lights and headlights do not turn on, or the horn does
not sound.
Emergency start function
1
2
3
4
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