# Service bulletin TSB002123

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10244116
- Published by NHTSA: 2023\-10\-16
- Manufacturer's number: TSB002123
- Manufacturer's date: 2023\-08\-21
- NHTSA component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

## NHTSA's 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. Follow the repair procedure in this bulletin to address this condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244116-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10244116-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Glass, wipers and mirrors, Heating and air conditioning

## Vehicles listed

- 2020 to 2022 TOYOTA HIGHLANDER
- 2020 to 2022 TOYOTA RAV4
- 2022 TOYOTA TUNDRA

## Recalls for the same vehicles and component

- [2025522](/recalls/tc/2025522.md), 2025-10-01: Visual System
- [2023084](/recalls/tc/2023084.md), 2023-02-22: Visual System
- [2022374](/recalls/tc/2022374.md), 2022-07-13: Visual System
- [2022215](/recalls/tc/2022215.md), 2022-04-28: Visual System

## Other bulletins for the same vehicles and component

- [TSB005823](/bulletins/10244115.md), 2023-10-16, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS. TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Follow the procedures outlined in this service bulletin to aid in locating, inspecting, and repairing refrigerant leaks
- [T\-SB\-0021\-23](/bulletins/10238131.md), 2023-06-26, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ELECTRICAL SYSTEM. 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\-0042\-22 Rev](/bulletins/10230365.md), 2023-01-17, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; FUEL SYSTEM, GASOLINE. TSB: Some 2021 model year RAV4 Prime vehicles may exhibit one or more of the following conditions: ?The climate control system is NOT cooling or heating. ?MIL ON with one or more of the following Diagnostic Trouble Code\(s\) \(DTC\[s\]\): oP15017A ? Hybrid/EV battery cooling refrigerant gas fluid leak or seal failure. oP1B8314 ? Hybrid/EV battery pack refrigerant pressure sensor ?a? circuit high circuit short to auxiliary battery. oP05347A ? Refrigerant gas fluid leak or seal failure. ?Humming/buzzing noise upon startup \(Ready ON\) with the compressor on. Follow the Repair Procedure in this bulletin to address these conditions
- [T\-TT\-0704\-22](/bulletins/10220215.md), 2022-09-15, Service bulletin: VISIBILITY:GLASS, SIDE/REAR. TT: Customers may experience a rear window glass run moulding that is not properly engaged. The glass run moulding may appear to be lifting, or pulled out of position, around the lower rear corner of the back window. Some customers may press downward on the molding to re\-secure it to rear door window frame, but it can lift again.
- [TSB004222](/bulletins/10214364.md), 2022-06-21, Service bulletin: ELECTRICAL SYSTEM; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:COMPRESSOR; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. TSB: Some 2021 model year RAV4 Prime vehicles may exhibit a short humming/buzzing noise upon startup \(Ready ON\) with the compressor on. Follow the Repair Procedure in this bulletin to address this condition.
- [TSB002422](/bulletins/10214331.md), 2022-06-21, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. TSB: Some 2018 model year Camry and Camry Hybrid, 2019 model year Avalon and Avalon Hybrid, 2020 ? 2021 model year Highlander, Highlander Hybrid, and Corolla, and 2021 model year Sienna Hybrid vehicles may exhibit decreased front windshield defroster performance at extremely low ambient temperatures. This condition may be the result of the fresh/recirculation servo actuator separating from the servo. This condition does not affect the airflow of the defroster. Follow the Repair Procedure in this bulletin to address this condition.
- [T\-TT\-0663\-21](/bulletins/10202452.md), 2021-10-25, Service bulletin: LANE DEPARTURE; VISIBILITY. TT: When used in conjunction with the Repair Manual, these Blind Spot Monitor, Forward Recognition Camera, and Front Millimeter Wave Radar tips leverage SSTs and readily available tools to support target placement in varying shop environments.
- [T\-SB\-0080\-19 Rev](/bulletins/10201400.md), 2021-09-13, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER. TSB: Some 2006 ? 2022 model year Toyota vehicles in particular geographic areas may exhibit a condition where the HVAC evaporator drain hose has become obstructed with an insect nest. An insect repellent drain hose tip \(ARINIX® Tip\) is available to help minimize future occurrences of this environmental condition. For some models, a new drain hose is required to properly fit the ARINIX® Tip. Follow the procedures in this bulletin for proper handling and installation of this optional service part.
- [T\-SB\-0079\-20 Rev](/bulletins/10185772.md), 2021-01-25, Service bulletin: VISIBILITY; SUSPENSION. TSB: Some 2019 ? 2021 model year RAV4 and RAV4 Hybrid vehicles may exhibit a vibration/shaking of the image shown in the outer rear\-view mirror\(s\) while driving. Mirror vibration can be observed at highway speeds of approximately 50 ? 70 mph on typical concrete/asphalt road surfaces. Follow the Repair Procedure in this bulletin to improve this condition.
- [T\-TT\-0621\-20](/bulletins/10179791.md), 2020-09-14, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER; ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TT: Any HVAC repair requiring reassembly of the quick connect fitting between the suction hose sub\-assembly and the suction pipe sub\-assembly located at the top right of the engine compartment.

JSON: [/v1/bulletins/10244116](/v1/bulletins/10244116)

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