Lexus RX300 (MCU15). Service manual - part 4
INTRODUCTION
– Handling Precautions on Related Components
IN-9
3.
BRAKE SYSTEM
The brake system is one of the most important safety components. Always follow the directions and
notes given in section BR of the repair manual for the relevant model year when handling brake sys-
tem parts.
NOTICE:
When repairing the brake master cylinder or TRAC system, bleed the air out of the TRAC
system.
4.
DRIVE TRAIN AND CHASSIS
The drive train and chassis are components that can have great effects on the running performance
and vibration resistance of the vehicle. After installing components in the sections listed in the table
below, perform alignments to ensure correct mounting angles and dimensions. Particularly accurate
repair of the body must also be done to ensure correct alignment.
HINT:
Correct procedures and special tools are required for alignment. Always follow the directions
given in the repair manual for the relevant model year during alignment and section DI of this manual.
Component to be aligned
Section of repair manual
for relevant model year
Front Wheels
Suspension and Axle (SA) section
Rear Wheels
Suspension and Axle (SA) section
Propeller Shaft
Propeller Shaft (PR) section
5.
ECU (ELECTRONIC CONTROL UNIT)
Many ECUs are mounted in this vehicle.
Take the following precautions during body repair to prevent damage to the ECUs.
D
Before starting electric welding operations, disconnect the negative (–) terminal cable from the bat-
tery.
When the negative (–) terminal cable is disconnected from the battery, memory of the clock and audio
systems will be cancelled. So before starting work, make a record of the contents memorized by each
memory system. Then when work is finished, reset the clock and audio systems as before.
When the vehicle has tilt and telescopic steering, power seat and outside rear view mirror, which are
all equipped with memory function, it is not possible to make a record of the memory contents.
So when the operation is finished, it will be necessary to explain this fact to the customer, and request
the customer to adjust the features and reset the memory.
D
Do not expose the ECUs to ambient temperatures above 80
_C (176_F).
NOTICE:
If it is possible the ambient temperature may reach 80
_ (176_F) or more, remove the ECUs
from the vehicle before starting work.
D
Be careful not to drop the ECUs and not to apply physical shocks to them.