TSB002123

T-SB-0021-23
Rev1
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
REVISION NOTICE
August 21, 2023 Rev1:
The Parts Information section has been updated.
Any previous printed versions of this bulletin should be discarded.
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
Rev1
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*
2021
Shokki Nagakusa (D)
Takaoka (J)
RAV4
TMMC Cambridge (C)
2022
TMMC Woodstock (W)
DRIVETRAIN**
VIN
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
*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
Rev1
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
Double Cab
2WD
Crew MAX
Tundra
2022
TMMTX (X)
Double Cab
4WD
Crew MAX
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
*The plant is determined by the 11th digit of the VIN: X = TMMTX.
Warranty Information
OP CODE
MODEL
DESCRIPTION
RAV4
883621
Highlander
TIME
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
Rev1
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
PART NAME
QTY
Radiator Assy, Air Conditioner
1
Hose, Drain Cooler
1
870500R160
870500R161
870500R110
870500R120
870500E280
870500C210
870500C200
870500R320
885390R050
885390E100
885390C080
Required Tools & Equipment
REQUIRED TOOLS & MATERIAL
QTY
Robinair R1234YF A/C Machine
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 2023.03.001.02 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
Rev1
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
Rev1
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