L-SB-0028-20

Service Bulletin Details

Public Details for: L-SB-0028-20

Tsb: some 2006 ? 2020 model year lexus hybrid vehicles may exhibit an excessive buildup of dust, lint, or debris in the hv battery cooling fan or intake filter. This condition could reduce the efficiency of the hv battery cooling system.


- 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - 2012 - 2011 - 2010 - 2009 - 2008 - 2007 - 2006 -

L-SB-0028-20
August 4, 2020
HV Battery Cooling System Maintenance
Service
Category
Engine/Hybrid System
Section
Hybrid/Battery Control System
Market USA
Applicability
YEAR(S)
MODEL(S)
2011 - 2017
CT200H
2013 - 2020
ES300H
ADDITIONAL INFORMATION
2007 - 2011, 2013 - 2018 GS450H
2010 - 2012
HS250H
2018 - 2020
LC500H
2008 - 2016, 2018 - 2020 LS500H, LS600H
2015 - 2020
NX300H
2006 - 2008, 2010 - 2020 RX400H, RX450H
2019 - 2020
UX250H
Introduction
Some 2006 – 2020 model year Lexus hybrid vehicles may exhibit an excessive buildup of dust,
lint, or debris in the HV battery cooling fan or intake filter. This condition could reduce the
efficiency of the HV battery cooling system. Perform the procedures in this bulletin to address
this condition.
NOTE
It is recommended the battery intake filter is inspected for dust, lint, debris, etc., every 5,000 miles.
The procedures in this bulletin should be completed every 20,000 miles OR anytime the battery assembly
is replaced.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
© 2020 Lexus, a division of Toyota Motor Sales, USA
Page 1 of 9
L-SB-0028-20
August 4, 2020
Page 2 of 9
HV Battery Cooling System Maintenance
HV Battery Intake Filter Applicability
The following table is a general guideline for HV battery cooling fan intake filter applicability. Some
model and model year vehicles may NOT follow this table. ALWAYS check the vehicle and refer to
the appropriate Repair Manual BEFORE beginning service.
Table 1. HV Battery Cooling Fan Intake Filter Applicability
MODEL
MODEL YEAR
INTERNAL FILTER
2011 – 2014
N
2015 – 2017
Y
2013
N
2014 – 2018
Y
2019 – 2020
Y
2007 – 2014
N
2015 – 2018
Y
2010 – 2012
N**
2008 – 2016
N
2018 – 2020
Y
LC 500h
2018 – 2020
Y
NX 300h
2015 – 2020
Y
2006 – 2015
N
2016 – 2020
Y
2019 – 2020
Y
CT 200h
ES 300h
GS 450h
HS 250h
LS 500h, LS 600h
RX 400h, RX 450h
UX 250h
EXTERNAL FILTER
N*
*External filters are NOT factory installed; some external filters will NOT be shown in the Repair Manuals.
**If applicable, internal filter was added AFTER the last model year of HS was sold in the NA market.
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 3 of 9
HV Battery Cooling System Maintenance
Parts Information
If the HV battery cooling fan intake filter is damaged or in need of replacement, use the following
table as a general guideline.
Table 2. HV Battery Intake Filter Replacement Part Numbers
MODEL
MODEL YEAR
PART NUMBER
QTY
CT 200h
2015 – 2017
G92DH-76020
1
2014 – 2018
G92DH-33040
1
2019 – 2020
G92DH-33050
1
G92DH-30130
1
G92DH-30140
1
G92DH-50010
1
G92DJ-50010
1
G92DH-11010
1
G92DJ-11010
1
58466-78040-C0
1
58467-78040-C0
1
74412-48030
2
74412-48040
1
G92DH-12050
1
ES 300h
GS 450h
2015 – 2018
LS 500h
2018 – 2020
LC 500h
2018 – 2020
NX 300h
2015 – 2020
RX 450h
2016 – 2020
UX 250h
2019 – 2020
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 4 of 9
HV Battery Cooling System Maintenance
HV Battery Intake Filter Maintenance and Cleaning
1. Determine if the vehicle has an HV battery intake filter by using Tables 1 and 2 above.
Does the vehicle have an HV battery intake filter?
Figure 1. Example of a CT 200h Battery Intake Filter


Figure 2. Example of a UX 250h Battery Intake Filter
YES — Continue to step 2.
NO — Go to the HV Battery Cooling Fan Assembly Maintenance and
Cleaning section.
2. The HV battery intake filter may have accumulated dust, lint, and/or debris.
Inspect, clean, and determine if the HV battery intake filter requires replacement.
Refer to TIS, applicable model and model year Repair Manual:

2015 / 2016 / 2017 CT 200h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Inspection”

2014 / 2015 / 2016 / 2017 / 2018 / 2019 / 2020 ES 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Inspection”
NOTE
The 2014 model year ES 300h Repair Manual does NOT specifically call out the Battery
Cooling Filter. Use the 2015 model year ES 300h Repair Manual.

2016 / 2017 / 2018 / 2019 / 2020 RX 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Inspection”
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 5 of 9
HV Battery Cooling System Maintenance
HV Battery Intake Filter Maintenance and Cleaning (continued)

2019 / 2020 UX 250h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Inspection”

2015 / 2016 / 2017 / 2018 / 2019 / 2020 NX 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “2AR-FXE (Hybrid / Battery
Control): Battery Cooling Filter: Inspection”

2015 / 2016 / 2017 / 2018 GS 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Duct(W/ Filter): Inspection”

2018 / 2019 / 2020 LS 500h:
Engine/Hybrid System – Hybrid/Battery Control System – “8GR-FXS (Hybrid / Battery
Control): Battery Cooling Filter: Inspection”

2018 / 2019 / 2020 LC 500h:
Engine/Hybrid System – Hybrid/Battery Control System – “8GR-FXS (Hybrid / Battery
Control): Battery Cooling Filter: Inspection”
3. Does the HV battery intake filter require replacement?
NOTE
If the HV battery intake filter is damaged it MUST be replaced.

YES — Continue to step 4.

NO — Go to step 5.
4. Replace the HV battery intake filter.
A. Remove the HV battery intake filter.
Refer to TIS, applicable model and model year Repair Manual:
 2015 / 2016 / 2017 CT 200h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Removal”
 2014 / 2015 / 2016 / 2017 / 2018 / 2019 / 2020 ES 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Removal”
NOTE
The 2014 model year ES 300h Repair Manual does NOT specifically call out the Battery
Cooling Filter. Use the 2015 model year ES 300h Repair Manual.
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 6 of 9
HV Battery Cooling System Maintenance
HV Battery Intake Filter Maintenance and Cleaning (continued)
 2016 / 2017 / 2018 / 2019 / 2020 RX 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Removal”
 2019 / 2020 UX 250h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Removal”
 2015 / 2016 / 2017 / 2018 / 2019 / 2020 NX 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “2AR-FXE (Hybrid / Battery
Control): Battery Cooling Filter: Removal”
 2016 / 2017 / 2018 GS 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Duct(W/ Filter): Removal”
 2018 / 2019 / 2020 LS 500h:
Engine/Hybrid System – Hybrid/Battery Control System – “8GR-FXS (Hybrid /
Battery Control): Battery Cooling Filter: Removal”
 2018 / 2019 / 2020 LC 500h:
Engine/Hybrid System – Hybrid/Battery Control System – “8GR-FXS (Hybrid /
Battery Control): Battery Cooling Filter: Removal”
B. Install the NEW HV battery intake filter.
Refer to TIS, applicable model and model year Repair Manual:
 2015 / 2016 / 2017 CT 200h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Installation”
 2014 / 2015 / 2016 / 2017 / 2018 / 2019 / 2020 ES 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Installation”
NOTE
The 2014 model year ES 300h Repair Manual does NOT specifically call out the Battery
Cooling Filter. Use the 2015 model year ES 300h Repair Manual.
 2016 / 2017 / 2018 / 2019 / 2020 RX 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Installation”
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 7 of 9
HV Battery Cooling System Maintenance
HV Battery Intake Filter Maintenance and Cleaning (continued)
 2019 / 2020 UX 250h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Filter: Installation”
 2015 / 2016 / 2017 / 2018 / 2019 / 2020 NX 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “2AR-FXE (Hybrid / Battery
Control): Battery Cooling Filter: Installation”
 2016 / 2017 / 2018 GS 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Cooling Duct (W/ Filter): Installation”
 2018 / 2019 / 2020 LS 500h:
Engine/Hybrid System – Hybrid/Battery Control System – “8GR-FXS (Hybrid / Battery
Control): Battery Cooling Filter: Installation”
 2018 / 2019 / 2020 LC 500h:
Engine/Hybrid System – Hybrid/Battery Control System – “8GR-FXS (Hybrid / Battery
Control): Battery Cooling Filter: Installation”
5. Verify normal vehicle operation.
Has the HV battery cooling system efficiency improved?


YES — The procedure is complete. Repeat this cleaning procedure as regular
maintenance every 20,000 miles. If applicable, perform a filter inspection every
5,000 miles.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 8 of 9
HV Battery Cooling System Maintenance
HV Battery Cooling Fan Assembly Maintenance and Cleaning
NOTICE
 Do NOT attempt to clean the HV battery cooling fan while it is installed, doing so may cause
dust and debris to enter the battery case.
 Failure to secure the fan blades while cleaning the HV battery cooling fan assembly may result
in electronic circuit failure due to overturning.
1. Remove the HV battery cooling fan assembly.
Refer to TIS, applicable model and model year Repair Manual:

2011 / 2012 / 2013 / 2014 CT 200h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”

2013 ES 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”

2006 / 2007 / 2008 RX 400h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”

2010 / 2011 / 2012 / 2013 / 2014 / 2015 RX 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”

2007 / 2008 / 2009 / 2010 / 2011 / 2013 / 2014 GS 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”

2010 / 2011 / 2012 HS 250h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”

2008 / 2009 / 2010 / 2011 / 2012 / 2013 / 2014 / 2015 / 2016 LS 600h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Removal”
2. Using compressed air and/or a vacuum, remove ALL dust, lint, or debris buildup from the
HV battery cooling fan blades and air duct.
NOTICE
Failure to secure the fan blades while cleaning the HV battery cooling fan assembly may
result in electronic circuit failure due to overturning.
© 2020 Lexus, a division of Toyota Motor Sales, USA
L-SB-0028-20
August 4, 2020
Page 9 of 9
HV Battery Cooling System Maintenance
HV Battery Cooling Fan Assembly Maintenance and Cleaning (continued)
3. Reinstall the HV battery cooling fan AFTER cleaning it.
Refer to TIS, applicable model and model year Repair Manual:

2011 / 2012 / 2013 / 2014 CT 200h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Installation”

2013 ES 300h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Installation”

2006 / 2007 / 2008 RX 400h:
Engine/Hybrid System – Hybrid/Battery Control System – “P310 Hybrid Battery Control:
Battery Blower: Installation”

2010 / 2011 / 2012 / 2013 / 2014 / 2015 RX 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Installation”

2007 / 2008 / 2009 / 2010 / 2011 / 2013 / 2014 GS 450h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid Battery Control:
Battery Blower: Installation”

2010 / 2011 / 2012 HS 250h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid / Battery Control:
Battery Blower: Installation”

2008 / 2009 / 2010 / 2011 / 2012 / 2013 / 2014 / 2015 / 2016 LS 600h:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid Battery Control:
Battery Blower: Installation”
4. Has the HV battery cooling system efficiency improved?

YES — The procedure is complete. Repeat this cleaning procedure as regular
maintenance every 20,000 miles. If applicable, perform a filter inspection every
5,000 miles.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2020 Lexus, a division of Toyota Motor Sales, USA


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