Lexus RX300 (MCU15). Service manual - part 530

RS0RV–01

AB0152

SST

AB0158

SST

Battery

RS–30

–

SUPPLEMENTAL RESTRAINT SYSTEM

FRONT PASSENGER AIRBAG ASSEMBLY

LEXUS RX300   (RM785E)

DISPOSAL

HINT:
When scrapping vehicle equipped with an SRS or disposing of
a front passenger airbag assembly, always first deploy the air-
bag in accordance with the procedure described below. If any
abnormality occurs with the airbag deployment, contact the
SERVICE DEPT. of the DISTRIBUTOR.
CAUTION:

S

Never dispose of a front passenger airbag assembly
which has an undeployed airbag.

S

The airbag produces a sizeable exploding sound
when it deploys, so perform the operation out–of–
doors and where it will not create a nuisance to
nearby residents.

S

When deploying the airbag, always use the specified
SST (SRS Airbag Deployment Tool). Perform the op-
eration in a place away from electrical noise.
SST

09082–00700

S

When deploying an airbag, perform the operation at
least 10 m (33 ft) away from the front passenger air-
bag assembly.

S

The front passenger airbag assembly is very hot
when the airbag is deployed, so leave it alone for at
least 30 minutes after deployment.

S

Use gloves and safety glasses when handling a front
passenger airbag assembly with the deployed airbag.

S

Always wash your hands with water after completing
the operation.

S

Do not apply water, etc. to a front passenger airbag
assembly with the deployed airbag.

1.

AIRBAG DEPLOYMENT WHEN SCRAPPING VE-
HICLE

HINT:
Have a battery ready as the power source to deploy the airbag.
(a)

Check functioning of the SST (See step 1–(a) on page 
RS–16).
SST

09082–00700

H05116

H11960

SST

R13455

10 m (33 ft) or more

SST

Battery

H03286

–

SUPPLEMENTAL RESTRAINT SYSTEM

FRONT PASSENGER AIRBAG ASSEMBLY

RS–31

LEXUS RX300   (RM785E)

(b)

Disconnect the airbag connector.
(1)

Remove the glove compartment door finish plate in-
side the lower No. 2 panel.

(2)

Remove the connector from the glove compartment
door finish plate.

NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.

(3)

Disconnect the airbag connector.

(c)

Install the SST.
(1)

Connect the connector of the 2 SST to the front pas-
senger airbag assembly connector.

SST

09082–00700, 09082–00760

NOTICE:
To avoid damaging the SST connector and wire harness,
do not lock the secondary lock of the twin lock.

(2)

Move the SST to at least 10 m (33 ft) away from the
front of the vehicle.

(3)

Close all the doors and windows of the vehicle.

NOTICE:
Take care not to damage the SST wire harness.

(4)

Connect the SST red clip to the battery positive (+)
terminal and the black clip to the negative (–) termi-
nal.

(d)

Deploy the airbag.
(1)

Check that no one is inside the vehicle or within 10
m (33 ft) area around the vehicle.

(2)

Press the SST activation switch and deploy the air-
bag.

H05118

RS–32

–

SUPPLEMENTAL RESTRAINT SYSTEM

FRONT PASSENGER AIRBAG ASSEMBLY

LEXUS RX300   (RM785E)

CAUTION:

S

The front passenger airbag assembly is very hot
when the airbag is deployed, so leave it alone for at
least 30 minutes after deployment.

S

Use gloves and safety glasses when handling the
front passenger airbag assembly with the deployed
airbag.

S

Always wash your hands with water after completing
the operation.

S

Do not apply water, etc. to the front passenger airbag
assembly with the deployed airbag.

S

When scrapping a vehicle, deploy the airbag and
scrap the vehicle with the front passenger airbag as-
sembly still installed.

S

When moving a vehicle for scrapping which has the
front passenger airbag assembly with the deployed
airbag, use gloves and safety glasses.

HINT:
The airbag deploys simultaneously as the LED of the SST ac-
tivation switch lights up.
2.

DEPLOYMENT WHEN DISPOSING OF FRONT PAS-
SENGER AIRBAG ASSEMBLY ONLY

NOTICE:

S

When disposing of the front passenger airbag assem-
bly only, never use the customer’s vehicle to deploy
the airbag.

S

Be sure to follow the procedure given below when de-
ploying the airbag.

HINT:
Have a battery ready as the power source to deploy the airbag.
(a)

Remove the front passenger airbag assembly (See page
RS–27).

CAUTION:

S

When removing the front passenger airbag assembly,
work must be started 90 seconds after the ignition
switch is turned to the ”LOCK” position and the nega-
tive (–) terminal cable is disconnected from the bat-
tery.

S

When storing the front passenger airbag assembly,
keep the upper surface of the airbag deployment side
facing upward.

AB0163

Wire Harness
Diameter

Stripped Wire Harness Section

H05122

H05123

Width

Inner 
diam.

–

SUPPLEMENTAL RESTRAINT SYSTEM

FRONT PASSENGER AIRBAG ASSEMBLY

RS–33

LEXUS RX300   (RM785E)

(b)

Using a service–purpose wire harness, tie down the front
passenger airbag assembly to the tire.
Wire harness: Stripped wire harness section 
1.25 mm

2 

or more (0.0019 in.

2

 or more)

CAUTION:
If the front passenger airbag assembly is tied down with
too thin wire harness, it may snap. This is highly danger-
ous. Always use a wire harness which is at least 1.25 mm

2

(0.0019 in

2

.).

HINT:
To calculate the square of the stripped wire harness section:

Square = 3.14 X (Diameter)

2

 divided by 4

(1)

Install the 2 nuts on the front passenger airbag as-
sembly.

(2)

Wind the wire harness around the bolts, and pass
the wire harness though the installation holes.

(3)

Position the front passenger airbag assembly in-
side the tire with the airbag deployment side facing
inside.

Tire size: Must exceed the following dimensions–
Width: 185 mm (7.28 in.)
Inner diameter: 360 mm (14.17 in.)

CAUTION:

S

Make sure that the wire harness is tight. It is very dan-
gerous if looseness in the wire harness results in the
front passenger airbag assembly coming free due to
the shock from the airbag deploying.

S

Always tie down the front passenger airbag assembly
with the airbag deployment side facing inside.

NOTICE:
The tire will be marked by the airbag deployment, so when
disposing of the airbag use a redundant tire.