Iridium-Tipped Spark Plugs; Brake System - Toyota 4Runner 2003 Operating Manual

Iridium–tipped spark plugs
(2UZ–FE engine)
Your engine is fitted with iridium–tipped
spark plugs.
NOTICE
Use only iridium–tipped spark plugs
and do not adjust gaps for your en-
gine performance and smooth drive-
ability.
'03 4Runner_U (L/O 0211)

Brake system

This brake system has 2 independent hy-
draulic circuits. If either circuit should fail,
the other will still work. However, the ped-
al will be harder to press, and your stop-
ping distance will be longer. Also, the
brake system warning light may come on.
CAUTION
Do not drive your vehicle with only a
single brake system. Have
brakes fixed immediately.
BRAKE BOOSTER
The brake booster uses brake fluid pres-
surized by the pump to power–assist the
brakes. If the brake booster fails during
driving, the brake system warning light
comes on and buzzer sounds continuous-
ly. In this case, the brakes may not work
properly. If they do not work well, depress
the brake pedal firmly. If the brake system
warning light comes on, immediately stop
your vehicle and contact your Toyota deal-
er.
It is not a malfunction that the brake sys-
tem warning light may stay on for 60 sec-
onds after the ignition key is turned to the
"ON" position.
Depressing the brake pedal repeatedly
may turn on the brake system warning
light and buzzer. It is normal if the light
turns off and the buzzer stops sounding
after a few seconds.
You may hear a small sound in the engine
compartment after the engine is started or
the brake pedal is depressed repeatedly.
This is a pump pulsating sound of the
brake system, and it is not a malfunction.
your
CAUTION
D
Do not pump the brake pedal if the
engine stalls. Each push on the
pedal uses up your
pressure reserve.
D
Even if the power assist is com-
pletely lost, the brakes will still
work. But you will have to push the
pedal hard, much harder than nor-
mal. And your braking distance will
be longer.
2003 4RUNNER from Oct. '02 Prod. (OM35804U)
brake fluid
247