Toyota 4Runner manuals

Toyota 4Runner: Precaution

PRECAUTION

1. TIRE PRESSURE WARNING ECU EXPRESSIONS

(a) The tire pressure monitor receiver assembly is referred to as the tire pressure warning ECU in this section.

2. TIRE PRESSURE WARNING SYSTEM PRECAUTION

(a) It is necessary for the tire pressures to be adjusted periodically because tire pressure decreases naturally over time.

(b) In winter, tire pressure may decrease due to low ambient temperatures (tire pressure decreases by approximately 10 kPa (0.1 kgf/cm2, 1.5 psi) for every 10°C (50°F) drop in the ambient temperature). Therefore, the tire pressure warning system is more likely to indicate a warning if the tire pressures are not adjusted appropriately. If the daily temperature variation is large, pressurize the tires high so that the tire pressures are suitable under cold conditions. As a result, unnecessary tire pressure warning operation should decrease.

(c) Depending on the tire type, the system may not function properly even if the specified wheels are used.

(d) To prevent damage to the tire pressure warning valve and transmitter, make sure that the tire pressure warning valve and transmitter does not interfere with the tire bead when installing or removing a tire.

(e) To prevent damage to the tire pressure warning valve and transmitter, before disengaging the tire bead or removing the tire from the wheel, drop the tire pressure warning valve and transmitter into the wheel.

(f) Always use a new grommet, washer and nut when installing a tire pressure warning valve and transmitter.

(g) When one or more tire pressure warning valve and transmitters or the tire pressure warning ECU is replaced, the transmitter IDs for all of the tire pressure warning valve and transmitters must be reregistered. Before registering the transmitter ID of a new tire pressure warning valve and transmitter, check the Data List and record all of the transmitter IDs that are already registered.

3. IGNITION SWITCH EXPRESSION

The type of ignition switch used on this model differs depending on the specifications of the vehicle. The expressions listed in the table below are used in this section.

Expression

Ignition Switch (position)

Engine Switch (condition)

Ignition Switch off

LOCK

Off (Lock)

Ignition Switch ACC

ACC

On (ACC)

Ignition Switch ON

ON

On (IG)

Engine Start

START

On (Start)

Tire Pressure Warning System
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Parts Location
PARTS LOCATION ILLUSTRATION ...

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