2010 TOYOTA PRIUS brake

496
PRIUS_U (OM47668U) U.S.A.
5-2. Steps to take in an emergency
If a war ning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle
may be dangerous.The following warning indicates a possible problem in the brake sys-
tem. Immediately stop the vehicle in a safe place and contact your
Toyota dealer.
*: Parking brake engaged warning buzzer: 
A buzzer will sound if the vehicle is driven at a speed of approximately 3 mph
(5 km/h) or more.
Warning lightWarning light/Details

(U.S.A.)

(Canada)
Brake system warning light and warning buzzer* (red
indicator)
• Low brake fluid
• Malfunction in the brake system This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is
fully released, the system is operating normally.
Calmly perform the following actions if any of the warning lights turn
on or flash. If a light turns on or flashes, but then turns off, this does
not necessarily indicate a malfunction in the system.

498 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Warning lightWarning light/Details
Automatic headlight leveling system warning light (if
equipped)
Indicates a malfunction in the automatic headlight level-
ing system.

(U.S.A.)

(Canada)
ABS warning lightMalfunction in:
• The ABS; or
• The brake assist system.
Brake system warning light (yellow indicator) Malfunction in the electronically controlled brake sys-
tem.
Electric power steering system warning light Malfunction in the EPS (Electric Power Steering).
Pre-collision system warn ing light (if equipped)
Indicates a malfunction in the pre-collision system.

5
When trouble arises
505
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
■If the tire pressure warning light comes on after blinking for 1
minute frequently
If the tire pressure warning light comes on after blinking for 1 minute fre-
quently when the “POWER” switch is
turned to ON mode, have it
checked by your Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. 
(Customizable features P. 587)
However, Toyota recommends that the seat belt reminder buzzer be opera-
tional to alert the driver and front passenger that the seat belts are not fas-
tened.
CAUTION
■ When the electric power steering warning light comes on
The steering wheel may become extremely heavy. 
If the steering wheel becomes heavier than usual when operating, firmly
hold and operate it 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.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is pr obable 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 Toyota 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 loss should occur
The tire pressure warning syste m may not activate immediately.

514 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Warning messageDetailsCorrection procedure
(If equipped) Indicates that there is a high
risk of a collision, or that the
pre-collision brake function is
operating.
Slow the vehicle by
applying the
brakes.
(If equipped) Indicates that there is a high
risk of a collision.
Slow the vehicle by
applying the
brakes.
(If equipped, flash- ing) Your vehicle is nearing the
vehicle ahead (in radar cruise
mode).
Slow the vehicle by
applying the
brakes.
(Flashing) 
(If equipped) Indicates a malfunction the
LKA.
A buzzer also sounds. Restart the LKA
after restarting the
hybrid system.

5
When trouble arises
521
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Interior
buzzerExterior buzzerWarning messageDetailsCorrection procedure
Contin-
uous Contin-
uous
(Displayed alternately) (Flashing) An open door
other than the
driver’s door is
closed while the
electronic key is
outside the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode
with the shift
position not in
“P”.
• Push the
“P” posi-
tion
switch.
• Confirm the loca-
tion of the
electronic
key.
Once  The electronic
key battery is
low.Replace
the bat-
tery.

( P. 460)
Once 
(Flashing)An open door
has been
closed and the
“POWER”
switch has been
turned twice to
the ACCES-
SORY mode
from OFF. Press the
“POWER”
switch
while
applying
the
brakes.

524
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
If you have a flat tire
Remove the flat tire and replace it with the spare provided.
■Before jacking up the vehicle
●Stop the vehicle on a hard, flat surface.
● Set the parking brake.
● Shift the shift position to “P”.
● Stop the hybrid system.
● Turn on the emergency flashers.
■ Location of the spare tire, jack and tools
Center auxiliary box
Wheel nut
wrench
Jack handle
Spare tire Towing
eyelet
Jack

536 5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
CAUTION
■When the spare tire is attached
The vehicle speed may not be correctly detected, and the following sys-
tems may not operate correctly:
●ABS & Brake assist
●Enhanced VSC
●Navigation system (if equipped)
●TRAC
●Dynamic radar cruise control (if equipped)
●Cruise control (if equipped)
●PCS (if equipped)
●LKA (if equipped)
●Rear view monitor system (if equipped)
●Advanced parking guidance system (if equipped)
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their
storage location to reduce the possibility of personal injury during a collision
or sudden braking.
■ When stowing the flat tire
● Make sure the rear seats are in their original position.
● Secure it using a tire tie-down belt. Otherwise, the flat tire may fly out in
case of the sudden braking or an accident, resulting in death or serious
injury.

5
When trouble arises
539
5-2. Steps to take in an emergency
PRIUS_U (OM47668U) U.S.A.
Emergency start function
When the hybrid system does not start, the following steps can be
used as an interim measure to st art the hybrid system if the
“POWER” switch is functioning normally.
Set the parking brake.
Set the “POWER” switch to the ACCESSORY mode.
Push 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. Ha ve the vehicle checked by your
Toyota dealer.
■ The interior lights and headlights do not turn on, or the horn
does not sound.
One of the following may be the cause of the problem.
●One or both of the 12 volt ba ttery terminals may be discon-
nected.
● The 12 volt battery may be discharged. ( P. 543)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
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