L-SB-0181-17

L-SB-0181-17
December 7, 2017
Hybrid System Electrical Safety Precautions
Service
Category
General
Section
Pre-Delivery Service
Market USA
Applicability
YEAR(S)
MODEL(S)
2018
RX450H
ADDITIONAL INFORMATION
Introduction
This bulletin provides general high-voltage safety precautions for the hybrid system. The hybrid
system circuits operate with up to 650V. These high voltages are dangerous and can cause
personal injury, severe burns, electric shock, and death if proper safety precautions are NOT
followed. Be sure to carefully review ALL applicable Repair Manual procedures BEFORE
performing service.
As a policy, and to help ensure safety, no Lexus dealership technician is qualified to service or
repair hybrid vehicles until Lexus course L071 has been successfully completed.
CAUTION
When servicing the high-voltage system on the 2018 RX 450h, wait AT LEAST 10 minutes
AFTER disconnecting the service plug BEFORE touching ANY of the high -voltage connectors
or terminals. Failure to do so may result in personal injury, severe burns, e lectric shock,
and death.
© 2017 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 4
L-SB-0181-17
December 7, 2017
Page 2 of 4
Hybrid System Electrical Safety Precautions
Introduction (Continued)
Figure 1.
8
2
3
4
1
6
7
5
1
Rear Traction Motor With Transaxle Assembly
(AWD Only)
5
Hybrid Vehicle Transaxle Assembly
2
Engine Room Relay Block and Junction
Block Assembly
6
HV Battery
3
Inverter With Converter Assembly
7
HV Floor Under Wire
4
Com pressor With Motor Assembly
8
Auxiliary Battery
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
© 2017 Lexus, a division of Toyota Motor Sales, USA
L-SB-0181-17
December 7, 2017
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Hybrid System Electrical Safety Precautions
Required Tools & Equipment
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Electrical Insulating Gloves*
01413-00072 (Medium)
01413-00073 (Large)
01413-00074 (Extra Large)
1
* Essential SST.
CAUTION
ALWAYS inspect electrical insulating gloves BEFORE use for cracks, ruptures, tears, pinholes,
or damage. Do NOT wear if damaged. Failure to do so may result in personal injury, severe
burns, electric shock, and death.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
Electrical Safety Precautions
CAUTION
HYBRID HIGH-VOLTAGE SAFETY NOTICE
A Lexus gas/electric hybrid vehicle has high-voltage DC and AC systems. Both DC and AC
high-voltage are very dangerous and can cause personal injury, severe burns, electric shock,
and death.
Regular Service and Repairs (Pre-Delivery Service [PDS] and Non-High-Voltage Maintenance
and Service)
Ensure that ALL persons performing PDS or non-high-voltage maintenance and service:
1. Follow ALL Caution labels attached to high-voltage parts.
2. Do NOT touch or attempt to remove or replace ANY high-voltage (orange-colored) wiring
and connectors.
3. Do NOT touch the orange service plug.
4. Read, understand, and follow the safety procedures in the Pre -Delivery Service Manual,
Repair Manual, and ALL applicable Service Bulletins for the vehicle.
© 2017 Lexus, a division of Toyota Motor Sales, USA
L-SB-0181-17
December 7, 2017
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Hybrid System Electrical Safety Precautions
Electrical Safety Precautions (Continued)
CAUTION
HYBRID HIGH-VOLTAGE SAFETY NOTICE (Continued)
High-Voltage Repairs
Ensure that ALL technicians performing repairs to high-voltage systems:
1. Complete the hybrid training course L071 provided at the Lexus Area office.
2. Read, understand, and follow the safety procedures in the Repair Manual and ALL applicable
Service Bulletins for the vehicle.
3. Use electrical insulating gloves and safety glasses whenever servicing high-voltage systems.
4. AFTER disconnecting the service plug, wait AT LEAST 10 minutes BEFORE touching ANY of
the high-voltage connectors or terminals.
5. Are responsible for managing the safety of ANY hybrid vehicle or parts they are working on.
6. Maintain a “safety zone” around their work, including using yellow caution tape and “DO NOT
TOUCH – HIGH-VOLTAGE” signs when high-voltage system repairs are to be left unattended.
In the Event the Hybrid Vehicle is Involved in an Accident
1. Do NOT touch ANY high-voltage wiring, connectors, or parts such as the inverter or the
hybrid battery assembly.
2. Do NOT touch the potassium hydroxide electrolyte that might spill or leak from the hybrid
battery as the result of an accident. If potassium hydroxide electrolyte gets on your skin or in
your eyes, neutralize it IMMEDIATELY with a saturated boric acid solution (ratio: 80 grams
boric acid to 2 liters water) or alternatively, flush repeatedly with large amounts of water.
SEEK IMMEDIATE MEDICAL ATTENTION.
3. If a vehicle fire occurs, water has been proven to be a suitable extinguishing agent.
4. See the Emergency Response Guide on the Lexus Technical Information System (TIS) or
Dealer Daily for more information.
If you have ANY questions, contact your District Service and Parts Manager.
Please refer to the Repair Manual for additional Caution notices.
© 2017 Lexus, a division of Toyota Motor Sales, USA