Lexus RX300 (MCU15). Service manual — part 73

IN08D–02

B11125

A

B

B11126

Frame Number

Frame Number Cover

(A)

(B)

(1)

(2)

Front

N09862

1MZ–FE Engine:

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INTRODUCTION

IDENTIFICATION INFORMATION

IN–3

LEXUS RX300 (RM785E)

IDENTIFICATION INFORMATION

VEHICLE IDENTIFICATION AND
ENGINE SERIAL NUMBER

1.

VEHICLE IDENTIFICATION NUMBER

The vehicle identification number is stamped on the vehicle
identification number plate (LHD vehicle only) and manufac-
ture’s plate, as shown in the illustration.

A: Vehicle Identification Number Plate (LHD vehicle only)
B: Manufacture’s Plate

2.

FRAME NUMBER

The frame number is stamped on the front floor pan under the
frame number cover.

Remove the frame number cover.

Insert a screwdriver to push the claw (A) and disen-
gage the claw on the side of (1), then slide the frame
number cover to (B) direction to disengage the claw
on the side of (2).

3.

ENGINE SERIAL NUMBER

The engine serial number is stamped on the engine block, as
shown in the illustration.

IN08E–02

Z11554

Seal Lock Adhesive

IN–4

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INTRODUCTION

REPAIR INSTRUCTIONS

LEXUS RX300 (RM785E)

REPAIR INSTRUCTIONS

GENERAL INFORMATION

BASIC REPAIR HINT
(a)

Use fender, seat and floor covers to keep the vehicle
clean and prevent damage.

(b)

During disassembly, keep parts in the appropriate order
to facilitate reassembly.

(c)

Installation and removal of battery terminal:
(1)

Before performing electrical work, disconnect the
negative (–) terminal cable from the battery.

(2)

If it is necessary to disconnect the battery for in-
spection or repair, first disconnect the negative (–)
terminal cable.

(3)

When disconnecting the terminal cable to prevent
damage to battery terminal, loosen the cable nut
and raise the cable straight up without twisting or
prying it.

(4)

Clean the battery terminals and cable ends with a
clean shop rag. Do not scrape them with a file or oth-
er abrasive objects.

(5)

Install the cable ends to the battery terminals after
loosening the nut, and tighten the nut after installa-
tion. Do not use a hammer to tap the cable ends
onto the terminals.

(6)

Be sure the cover for the positive (+) terminal is
properly in place.

(d)

Check hose and wiring connectors to make sure that they
are connected securely and correctly.

(e)

Non–reusable parts
(1)

Always replace cotter pins, gaskets, O–rings and oil
seals, etc. with new ones.

(2)

Non–reusable parts are indicated in the component
illustrations by the ”z” symbol.

(f)

Precoated parts
Precoated parts are bolts and nuts, etc. that are coated
with a seal lock adhesive at the factory.
(1)

If a precoated part is retightened, loosened or
caused to move in any way, it must be recoated with
the specified adhesive.

(2)

When reusing precoated parts, clean off the old
adhesive and dry with compressed air. Then apply
the specified seal lock adhesive to the bolt, nut or
threads.

BE1367

Medium Current Fuse and High Current Fuse

Equal Amperage Rating

V00076

Abbreviation

Part Name

Symbol

Illustration

FUSE

MEDIUM CURRENT FUSE

HIGH CURRENT FUSE

FUSIBLE LINK

CIRCUIT BREAKER

FUSE

M–FUSE

H–FUSE

FL

CB

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INTRODUCTION

REPAIR INSTRUCTIONS

IN–5

LEXUS RX300 (RM785E)

(3)

Precoated parts are indicated in the component il-
lustrations by the ”L” symbol.

(g)

When necessary, use a sealer on gaskets to prevent
leaks.

(h)

Carefully observe all specifications for bolt tightening
torques. Always use a torque wrench.

(i)

Use of special service tools (SST) and special service ma-
terials (SSM) may be required, depending on the nature
of the repair. Be sure to use SST and SSM where speci-
fied and follow the proper work procedure. A list of SST
and SSM can be found in Preparation section in this
manual.

(j)

When replacing fuses, be sure the new fuse has the cor-
rect amperage rating. DO NOT exceed the rating or use
one with a lower rating.

IN0253

WRONG

CORRECT

IN0252

WRONG

CORRECT

IN–6

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INTRODUCTION

REPAIR INSTRUCTIONS

LEXUS RX300 (RM785E)

(k)

Care must be taken when jacking up and supporting the
vehicle. Be sure to lift and support the vehicle at the prop-
er locations (See page IN–8).

S

Cancel the parking brake on the level place and
shift the transmission in Neutral (or N position).

S

When jaking up the front wheels of the vehicle, at
first place stoppers behind the rear wheels.

S

When jaking up the rear wheels of the vehicle, at
first place stoppers before the front wheels.

S

When either the front or rear wheels only should be
jacked up, set rigid racks and place stoppers in front
and behind the other wheels on the ground.

S

After the vehicle is jacked up, be sure to support it
on rigid racks. It is extremely dangerous to do any
work on a vehicle raised on a jack alone, even for
a small job that can be finished quickly.

(l)

Observe the following precautions to avoid damage to the
following parts:
(1)

Do not open the cover or case of the ECU unless
absolutely necessary. (If the IC terminals are
touched, the IC may be destroyed by static electric-
ity.)

(2)

To disconnect vacuum hoses, pull off the end, not
the middle of the hose.

(3)

To pull apart electrical connectors, pull on the con-
nector itself, not the wires.

(4)

Be careful not to drop electrical components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced and not reused.

(5)

When steam cleaning an engine, protect the elec-
tronic components, air filter and emission–related
components from water.

(6)

Never use an impact wrench to remove or install
temperature switches or temperature sensors.

(7)

When checking continuity at the wire connector, in-
sert the tester probe carefully to prevent terminals
from bending.

(8)

When using a vacuum gauge, never force the hose
onto a connector that is too large. Use a step–down
adapter for adjustment. Once the hose has been
stretched, it may leak air.