Service bulletin T-SB-0048-20

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10176693
Published by NHTSA	2020-06-22
Manufacturer's number	T-SB-0048-20
Manufacturer's date	2020-05-27
NHTSA component	EQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

TSB: Some 2017 ? 2019 model year Land Cruiser vehicles may exhibit one or more of the following HVAC conditions: ?Uneven temperature or air flow between the vents ?Little or no air flow from the vent(s) ?Improper MODE control function Additionally, some vehicles may store one or more of the following HVAC servo Diagnostic Trouble Codes (DTCs): ?B1441 ? Air Mix Damper Control Servo Motor Circuit (Front Passenger Side Lower Air Mix) ?B1442 ? Air Inlet Damper Control Servo Motor Circuit ?B1443 ? Air Outlet Damper Control Servo Motor Circuit ?B1445 ? Passenger Side Cool Air Bypass Damper Control ?B1446 ? Air Mix Damper Control Servo Motor Circuit (Driver Side Lower Air Mix) ?B1447 ? Rear Air Mix Damper Control Servo Motor Circuit (Driver Side Lower Air Mix) ?B1448 ? Passenger Side Face Servo Motor Circuit ?B1449 ? Rear Air Outlet Damper Control Servo Motor Circuit ?B1457 ? Driver Side Air Outlet Damper Control Servo Motor Circuit ?B1458 ? Passenger Side Air Outlet Damper Control Servo Motor Circuit ?B1486 ? Driver Side Air Outlet Damper Control Servo Motor Circuit ?B1488 ? Rear Air Mix Damper Control Servo Motor Circuit (Front Passenger Side)

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Equipment and accessories, Heating and air conditioning

Trouble codes named

B1441, B1442, B1443, B1445, B1446, B1447, B1448, B1449, B1457, B1458, B1486, B1488

Vehicles listed
TOYOTA LAND CRUISER	2017, 2018, 2019

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
19V244000	2019-03-27. EQUIPMENT:OTHER:LABELS

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
K0P_TISdownload_	2023-11-27. Service bulletin. DP: The Data Communication Module (DCM) in the subject vehicles are equipped with software to identify the location of the vehicle using the Global Positioning System (GPS) to support features of the Safety Connect system. Due to incorrect programming in the DCM software, after November 2nd, 2019, the GPS coordinates for this system will be calculated incorrectly. This will cause the system to use incorrect vehicle coordinates if one of the system?s features is activated.
TSB005823	2023-10-16. Service bulletin. 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
TSB003220	2023-10-16. Service bulletin. TSB: Replacement certification labels (the vinyl label installed on the driver door or door post) and VIN plates (the metal plate riveted to dashboard) (see Figure 1) for most 1979 ? 2023 model year vehicles may be available provided the requests meet the criteria listed in this Service Bulletin. Follow the Procurement Procedure in this bulletin to request a replacement certification label or VIN plate.
TSB000923	2023-05-01. Service bulletin. TSB: Some 2014 ? 2020 model year Toyota vehicles may exhibit a hard start and/or MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs): ?DTC P0171 and/or P0174 (System Too Lean Bank 1/Bank 2) ?DTC P0087 Fuel Rail / System Pressure ? Too Low Techstream data list analysis may reveal positive fuel trims including a no pressure condition verified by a manual fuel pressure gauge. Follow the Repair Procedure in this bulletin to address these conditions.
19TE12 Technical	2023-01-17. Service bulletin. TI: 19TE12 Expired on December 1, 2022
19TE12 Dealer Pa	2023-01-17. Service bulletin. DP: Customer Support Program 19TE12 expired December 1, 2022.
TSB009421Rev1	2022-09-15. Service bulletin. TSB: Some 2005 ? 2022 model year Toyota vehicles that have undergone water intrusion may exhibit a condition in which a musty smell is present. Follow the procedures in this bulletin to remediate the odor and address this condition. The purpose of this service bulletin is to provide general guidelines and procedures for odor remediation. This service bulletin provides a guide on how to prepare the interior of the vehicle prior to an odor remediation being performed, as well as contact information for an approved vendor who will arrange the remediation, and instructions on how to prepare the interior of the vehicle for reassembly once the remediation has been completed. Refer to all model and model year specific Repair Manuals and the EPA (Environmental Protection Agency) website for the most up-to-date safety and precautionary guidelines. This service bulletin is to provide a general overview and direction for the odor remediation process
Toyota PRO19-02	2022-02-14. Service bulletin. POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Toyota. This information must be kept near the point of vehicle sale and be available to any customer that requests it. Customers can find this information on the Owner?s section of Toyota.com. Dealers can locate a copy of this guide on the Claims Processing & Resource Center in Dealer Daily as well.
T-TT-0578-19 Rev	2021-11-15. Service bulletin. TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first turning on the vehicle. ?Various Bluetooth® Audio functions are no longer functioning with customer?s phone such as ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone, or if they have restored their phone data/settings recently.
T-SB-0083-21	2021-10-25. Service bulletin. TSB: Some 2018 ? 2020 model year Land Cruiser vehicles equipped with Active Height Control may exhibit a squeak noise from the rear of the vehicle over uneven surfaces when the suspension is set to the low height position. The squeak noise is caused by contact between the passenger rear lower control arm and lower control arm support bracket. Follow the Repair Procedure in this bulletin to address this condition.