Toyota 2004 Prius Owner's Manual page 121

Emissions inspection and maintenance
(I/M) programs
Your vehicle may not pass a state emis-
sion inspection if the malfunction indicator
lamp remains on. Contact your Toyota
dealer to check your vehicle's emission
control system and OBD (On−Board Diag-
nostics) system before taking your vehicle
for the inspection.
For details, see "Emissions inspection and
maintenance (I/M) programs" on page 272.
( )
(e) Master Warning Light
If the master warning light comes on, the
warning light for the faulty system is high-
lighted or the message such as "Please
press "P" to engage Park." and "The bat-
teries will not be charged if the transaxle
is in Neutral N." appears on the multi−in-
formation display. (See "Service reminder
indicators and warning buzzers— —Multi−
information display" on page 124 or "Pre-
cautions for use" on page 12 or "Fuel
gauge" on page 114 for instructions.)
(f) "ABS" Warning Light
The light comes on when the "IG−ON"
mode is enabled. If the anti−lock brake
system and the brake assist system work
properly, the light turns off
"READY" light comes on. Thereafter if the
system malfunctions, the light comes on
again.
When the "ABS" warning light is on (and
the brake system warning light is off), the
anti−lock brake system does not operate,
but the brake system still operates con-
ventionally.
When the "ABS" warning light is on (and
the brake system warning light is off), the
anti−lock brake system does not operate
but the brake assist system still operates.
In this case, the wheels could lock up
during a sudden braking or braking on
slippery road surfaces.
If either of the following conditions
occurs, this indicates a malfunction
somewhere in the parts monitored by
the warning light system. Contact your
Toyota dealer as soon as possible so
service the vehicle.
D
The light does not come on when the
"IG−ON" mode is enabled, or the light
remains on after the "READY" light
comes on.
D
after the The light comes on while you are driv-
ing.
A warning light turning on briefly during
operation does not indicate a problem.
CAUTION
If the "ABS" warning light remains on
together with the red brake system
warning light, immediately stop your
vehicle at a safe place and contact
your Toyota dealer.
In this case, not only the anti−lock
brake system will fail but also the
vehicle will become extremely unsta-
ble during braking.
Either of the following conditions may
occur, but does not indicate the mal-
function:
D
The light may stay on for about 60
seconds after the hybrid system is
started. It is normal if it turns off after
a while.
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