NHTSA ID Number: 10238133
Manufacturer Communication Number: L-SB-0031-23
TSB/Document Date: 2023-06-26
Summary
TSB: Some 2022 model year NX 250 and NX 350 vehicles may exhibit water entry to the vehicle from the HVAC drain hose being disconnected from the air conditioning radiator assembly and/or a grease/oil odor emitting from the vents. These conditions may be caused by paraffin wax leaking from the evaporator and causing the drain hose to expand and/or emitting an odor
L-SB-0031-23
May 11, 2023
HVAC Drain Hose Disconnected From HVAC Case
and/or Oil/Grease Odor From Vents
Service
Category
Vehicle Interior
Section
Heating/Air Conditioning
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2022
NX250, NX350
Introduction
Some 2022 model year NX 250 and NX 350 vehicles may exhibit water entry to the vehicle from
the HVAC drain hose being disconnected from the air conditioning radiator assembly and/or a
grease/oil odor emitting from the vents. These conditions may be caused by paraffin wax leaking
from the evaporator and causing the drain hose to expand and/or emitting an odor. Follow the
Repair Procedure in this bulletin to address these conditions.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT*
Kyusyu (2)
NX 250
Tahara (5)
TMMC (C)
Kyusyu (2)
NX 350
Tahara (5)
TMMC (C)
DRIVETRAIN**
VIN
FWD
JTJ#DCAZ#N2004973
AWD
JTJ#DCEZ#N2001984
FWD
JTJ#DCAZ#N5500339
AWD
JTJ#DCEZ#N5500035
FWD
2T2#DCAZ#NC002753
2T2#DCEZ#NC002508
AWD
JTJ#GCEZ#N2006838
JTJ#GCEZ#N5500418
2T2#GCEZ#NC014385
*The plant is determined by the 11th digit of the VIN: 2 = Kyusyu, 5 = Tahara, and C = TMMC.
**The drivetrain is determined by the 7th digit of the VIN: A = FWD and E = AWD.
© 2023 Lexus
, a division of Toyota Motor Sales, USA
Page 1 of 4
L-SB-0031-23
May 11, 2023
Page 2 of 4
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Warranty Information
OP CODE
MODEL
DESCRIPTION
TIME
OFP
T1
T2
NX 250
R & R the Air Conditioner
Radiator Assy & Drain Hose
5.7
87050-#####*
66
14
883621
NX 350
*Warranty claim MUST be submitted with the correct 10-digit OFP. Choose the correct OFP for the vehicle being repaired
by searching for the parts in the Electronic Parts Catalog using the VIN filter.
APPLICABLE WARRANTY
This repair is covered under the Lexus Basic Warranty. This warranty is in effect for
48 months or 50,000 miles, whichever occurs first, from the vehicle’s in-service date.
Warranty application is limited to occurrence of the specified condition described in
this bulletin.
Parts Information
PART NUMBER
PREVIOUS
NEW
87050-0R161
87050-0R161
87050-42A21
87050-42A21
88539-0E100
88539-0E100
88539-42090
88539-42090
PART NAME
QTY
Radiator Assy, Air Conditioner
1
Hose, Drain Cooler
1
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0031-23
May 11, 2023
Page 3 of 4
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Required Tools & Equipment
REQUIRED TOOLS & MATERIAL
QTY
1
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVI*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
1
Techstream Lite
TSLITEPDLR01
Techstream Lite (Green Cable)
TSLP2DLR01
*Essential SST.
NOTE
Only ONE of the Techstream units listed above is required.
GTS+ software version 2023.02.001.02 or later is required.
Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
© 2023 Lexus, a division of Toyota Motor Sales, USA
L-SB-0031-23
May 11, 2023
Page 4 of 4
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Repair Procedure (continued)
1. Is the drain cooler hose detached from the air conditioning radiator assembly and/or a
grease/oil odor emitting from the vents?
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
NOTE
If there is evidence of water intrusion or a musty smell is present in the vehicle interior, follow the
procedures outlined in L-SB-0004-22 Odor Remediation After Water Intrusion, to remediate the
odor and address this concern.
2. Remove the air conditioning radiator assembly and drain cooler hose.
Refer to TIS, applicable model and model year Repair Manual:
2022 NX 250 and NX 350:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air Conditioning
Unit (for Gasoline Model): Removal”
3. Install the NEW air conditioning radiator assembly and drain cooler hose.
Refer to TIS, applicable model and model year Repair Manual:
2022 NX 250 and NX 350:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air Conditioning
Unit (For Gasoline Model): Installation”
4. Confirm the condition no longer exists.
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TSB/Document ID: L-SB-0031-23
Replacement Service Bulletin Number:
MFR Communication Date: 2023-05-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM
MFR Component System:
MFR Component Subsystem:
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