NHTSA ID Number: 10238131
Manufacturer Communication Number: T-SB-0021-23
TSB/Document Date: 2023-06-26
Summary
TSB: Some 2020 ? 2022 model year Highlander and RAV4 vehicles, and 2022 model year Tundra vehicles equipped with a start/stop switch 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. This condition may be caused by paraffin wax leaking from the evaporator.
T-SB-0021-23
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)
2020 - 2022
Highlander, RAV4
2022
Tundra
ADDITIONAL INFORMATION
Introduction
Some 2020 – 2022 model year Highlander and RAV4 vehicles, and 2022 model year Tundra
vehicles equipped with a start/stop switch 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. This condition may be caused by paraffin wax leaking from the evaporator.
Follow the repair procedure in this bulletin to address this condition.
© 2023 Toyota
Motor Sales, USA
Page 1 of 6
T-SB-0021-23
May 11, 2023
Page 2 of 6
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Production Change Information
This bulletin applies to:
All 2020 model year RAV4 vehicles.
All 2021 model year RAV4 vehicles produced by Takaoka* and TMMC*.
All 2021 model year RAV4 vehicles produced by Shokki Nagakusa* BEFORE the Production
Change Effective VIN shown below.
All 2022 model year RAV4 vehicles produced by Takaoka* and TMMC* BEFORE the
Production Change Effective VINs shown below.
All 2020 – 2021 model year Highlander vehicles.
All 2022 model year Tundra and Highlander vehicles produced BEFORE the Production
Change Effective VINs shown below.
MODEL
MODEL YEAR
PLANT*
DRIVETRAIN**
VIN
2021
Shokki Nagakusa
(D)
FWD
JTM#1RFV#MD084963
AWD
JTM#1RFV#MD084913
FWD
JTM#1RFV#NJ024345
AWD
JTM#1RFV#NJ040396
2WD
2T3#1RFV#NC207902
AWD
2T3#1RFV#NC313526
2WD
2T3#1RFV#NW230598
AWD
2T3#1RFV#NW317011
Takaoka
(J)
RAV4
TMMC Cambridge
(C)
2022
TMMC Woodstock
(W)
*The plant is determined by the 11th digit of the VIN: D = Shokki Nagakusa, J = Takaoka, C = TMMC Cambridge, and
W = TMMC Woodstock.
**The drivetrain is determined by the 4th digit of the VIN: C or W = FWD and A, B, F, G, R, or P = AWD.
MODEL
MODEL YEAR
PLANT*
LINE**
Line 1
Highlander
2022
TMMI
(S)
Line 2
DRIVETRAIN
VIN
2WD
5TD#ZRAH#NS112708
AWD
5TD#ZRBH#NS199947
2WD
5TD#ZRAH#NS546859
AWD
5TD#ZRBH#NS571677
*The plant is determined by the 11th digit of the VIN: S = TMMI.
**The line is determined by the 12th digit of the VIN: 0 – 4 = Line 1 and 5 – 9 = Line 2.
© 2023 Toyota Motor Sales, USA
T-SB-0021-23
May 11, 2023
Page 3 of 6
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Production Change Information (continued)
MODEL
MODEL YEAR
PLANT*
DRIVETRAIN
CAB
BED LENGTH
VIN
6.5 ft.
5TF##5AA#NX007791
8.1 ft.
5TF##5CD#NX001184
5.5 ft.
5TF##5AB#NX007791
6.5 ft.
5TF#A5BC#NX001595
6.5 ft.
5TF##5DA#NX024925
8.1 ft.
5TF##5GD#NX001416
5.5 ft.
5TF##5DB#NX024925
6.5 ft.
5TF#A5EC#NX005221
Double Cab
2WD
Crew MAX
Tundra
2022
TMMTX
(X)
Double Cab
4WD
Crew MAX
*The plant is determined by the 11th digit of the VIN: X = TMMTX.
Warranty Information
OP CODE
MODEL
DESCRIPTION
TIME
RAV4
883621
Highlander
OFP
T1
T2
87050-####*
66
14
5.4
R & R the Air Conditioner
Radiator Assy & Drain Hose
Tundra
5.1
6.0
*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 Toyota Basic Warranty. This warranty is in effect for
36 months or 36,000 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.
© 2023 Toyota Motor Sales, USA
T-SB-0021-23
May 11, 2023
Page 4 of 6
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Parts Information
PART NUMBER
PREVIOUS
NEW
870500R160
870500R160
870500R161
870500R161
870500R110
870500R110
870500R120
870500R120
870500E280
870500E280
870500C210
870500C210
870500C200
870500C200
885390R050
885390R050
885390E100
885390E100
885390C080
885390C080
PART NAME
QTY
Radiator Assy, Air Conditioner
1
Hose, Drain Cooler
1
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 Toyota Motor Sales, USA
T-SB-0021-23
May 11, 2023
Page 5 of 6
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Repair Procedure
1. Is the vehicle equipped with a start/stop switch?
NOTE
ALL 2022 model year Tundra vehicles are equipped with a start/stop switch.
YES — Continue to step 2.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
Figure 1. Highlander Start/Stop Switch Location
Figure 2. RAV4 Start/Stop Switch Location
2. 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 3.
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 T-SB-0094-21 Odor Remediation After Water Intrusion, to remediate the
odor and address this concern.
© 2023 Toyota Motor Sales, USA
T-SB-0021-23
May 11, 2023
Page 6 of 6
HVAC Drain Hose Disconnected From HVAC Case and/or Oil/Grease Odor
From Vents
Repair Procedure (continued)
3. Remove the air conditioning radiator assembly and drain cooler hose.
Refer to TIS, applicable model and model year Repair Manual:
2020 – 2022 Highlander:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Front Air
Conditioning Unit (for Gasoline Model): Removal”
2020 RAV4:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air Conditioning
Unit (for A25A-FKS): Removal”
2021 – 2022 RAV4:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Air Conditioning
Unit (for A25A-FKS): Removal”
2022 Tundra:
Vehicle Interior – Heating/Air Conditioning – “Heating/Air Conditioning: Front Air
Conditioning Unit: Removal”
4. Install the NEW air conditioning radiator assembly and drain cooler hose.
Refer to TIS, applicable model and model year Repair Manual:
2020 – 2022 Highlander:
Vehicle Interior – Heating/Air Conditioning – “Heating / Air Conditioning: Front Air
Conditioning Unit (for Gasoline Model): Installation”
2020 RAV4:
Vehicle Interior – Heating/Air Conditioning – “Heating / Air Conditioning: Air Conditioning
Unit (for A25A-FKS): Installation”
2021 – 2022 RAV4:
Vehicle Interior – Heating/Air Conditioning – “Heating / Air Conditioning: Air Conditioning
Unit (for A25A-FKS): Installation”
2022 Tundra:
Vehicle Interior – Heating/Air Conditioning – “Heating / Air Conditioning: Front Air
Conditioning Unit: Installation”
5. Confirm the condition no longer exists.
© 2023 Toyota Motor Sales, USA
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TSB/Document ID: T-SB-0021-23
Replacement Service Bulletin Number:
MFR Communication Date: 2023-05-11
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
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