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Service bulletins for the 2019 Toyota Highlander

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.

179 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
T-SB-0074-202020-09-14. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; EQUIPMENT; ELECTRICAL SYSTEM. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes (DTCs) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition.
T-TT-0615-20 Rev2020-09-14. Service bulletin. EQUIPMENT; ENGINE. TT: The Toyota Quality group is looking to better understand our customers expectation regarding vehicle drivability. Specifically, we are looking at vehicle surge/hesitation condition (inconsistent acceleration) and would like to recover detailed customer voice and vehicle data.
T-SB-0050-202020-06-22. Service bulletin. FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL; EQUIPMENT. TSB: Some 2018 - 2019 model year Highlander Hybrid vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P107B (Fuel Rail Pressure Sensor "B" Circuit Range/Performance).
T-TT-0516-18_Rev2020-06-22. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TT: The microphone circuit passes through the DCM before reaching the radio/navigation system. To simplify the diagnosis of the microphone, Safety Connect SOS button lights, and DCM (Data Communication Module/telematics transceiver) inoperative conditions, refer to the procedure below to prevent unnecessary parts replacement.
T-TT-0606-202020-05-11. Service bulletin. EQUIPMENT. TT: Due to the challenges caused by the COVID-19 virus threat, some dealers are experiencing reduced traffic into their stores and causing dealer stock to age. Due to this situation, dealers are reminded and recommended to follow the Long-Term Vehicle Storage Guidelines outlined in T-SB-0009-19 and other Service Bulletin publications to ensure customers receive their vehicles in a fresh and well maintained condition Please ensure that both Sales and Service at your dealership are aware of these guidelines and are following the recommended maintenance and storage processes and procedures to ensure the highest customer satisfaction with their new vehicle purchase.
T-TT-0583-19_Rev2020-05-11. Service bulletin. EQUIPMENT. TT: Some customers who have upgraded their iPhone® to iOS13 are experiencing a condition where the Bluetooth connection disconnects and reconnects. In some instances, this condition causes the Panasonic head unit to reboot when the Bluetooth connection is initiated.
T-SB-0032-202020-05-11. Service bulletin. EQUIPMENT. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin Nos. PG021-88, PG015-89, PG0015-90, PG002-91, PG002-93, PG005-97, PG007-01, PG007-07, PG006-01, PG004-97, T-SB-0144-08, and T-SB-0304-17. The aforementioned bulletins are obsolete, and any printed versions should be discarded. 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 ? 2020 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.
T-TT-0600-202020-03-30. Service bulletin. EQUIPMENT:ELECTRICAL. TT: Some customers may experience echoing on the line calling the vehicle when using Bluetooth Hands Free. This is caused by the phone Hands Free volume being too low. These settings may need to be reapplied any time the phone is paired to a new head unit, a phone update is applied, or the phone is un-paired and re-paired.
T-TT-0598-202020-03-30. Service bulletin. EQUIPMENT. TT: Some vehicles may experience a ?New software is not compatible with the system.? Pop-up while performing T-SB-0003-20 during the head unit software installation process
Oil Cooler Pipe2020-03-09. Service bulletin. ENGINE AND ENGINE COOLING; EQUIPMENT; ENGINE. Technical Instructions: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 19TC04 OIL COOLER PIPE CERTAIN 2017 ? 2019 HIGHLANDER HV
Parts HotWire 202020-03-09. Service bulletin. ENGINE; EQUIPMENT; ENGINE AND ENGINE COOLING. Dealer Message: Parts Hotwire. In an effort to assist dealers in performing campaign 19TC04 on a customer?s first visit, Toyota is deploying stock of part number 04009-40131 (PIPE KIT, OIL COOLER) to all dealers. Dealers will receive enough parts to repair two days-worth of their peak demand based on the quantity of vehicles registered in the dealer?s area. Peak demand has been estimated based on historical campaign demand. Dealers should continue to place orders following the CPOR process for this campaign to replenish their stock. For additional details on the CPOR process, refer to the MAC report. Parts are stocked at the Parts Distribution Centers and are available in two days from order placement. NOTE: All dealers will receive a minimum of 1 piece.
19TC04 - DD - Pu2020-03-09. Service bulletin. ENGINE; EQUIPMENT. Dealer Daily Message: **Dealer Letter and Technical Instructions Available on TIS** Certain 2017 ? 2019 Model Year Highlander HV ? Special Service Campaign 19TC04 Dealer Letter and Technical Instructions now available on TIS.
T-TT-0520-19_Rev2020-02-18. Service bulletin. EQUIPMENT. TT: In certain cases of leaking air conditioning systems, the root cause of the leak is inadvertently overlooked, causing a repeat repair. To improve customer satisfaction and repair A/C system leaks in one dealer visit, Toyota has developed a set of guidelines for evaluating A/C system components.
T-SB-0042-19_Rev2020-02-18. Service bulletin. EQUIPMENT. TSB: REVISION NOTICE January 17, 2020 Rev1: ? The Introduction section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2019 model year Highlander and Highlander Hybrid vehicles equipped with JBL audio may exhibit inoperative text message playback, navigation voice prompts, and/or button beeps with the setting ON. Updated amplifiers are available through the exchange program to address this condition. Follow the Repair Procedure in this bulletin to address this condition.
T-SB-0279-17_Obs2020-02-18. Service bulletin. EQUIPMENT. TSB: OBSOLETE NOTICE January 13, 2020: This bulletin is now obsolete. Please see T-SB-0003-20.
T-SB-0008-202020-02-18. Service bulletin. EQUIPMENT. TSB: Vehicles may display evidence of a fluid leak or fluid seep from powertrain components. This bulletin explains how to determine the differences between a fluid leak versus a fluid seep. Cases that are determined to be a ?leak? should be repaired accordingly and will be covered under warranty if applicable. Cases that are determined to be a ?seep? should be documented on the repair order and inspected at the next service interval. Follow the Repair Information in this bulletin to determine if the concern in question is a fluid leak or fluid seep and review the Repair Procedure section to address the condition. NOTE This bulletin applies to ALL powertrain fluids excluding fuel and coolant.
T-TT-0583-192019-12-16. Service bulletin. EQUIPMENT:ELECTRICAL. TT: Some customers who have upgraded their iPhone® to iOS13 are experiencing a condition where the Bluetooth connection disconnects and reconnects. In some instances, this condition causes the Panasonic head unit to reboot when the Bluetooth connection is initiated.
T-TT-0442-17_Rev2019-12-16. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). TT: Safety Connect is a vehicle option which requires a subscription fee for the system to be active after the initial trial period. Once the subscription has expired the DCM (Telematics Transceiver) will be in an inactive state. In some instances, a DCM may need to be replaced even though the customer is not using the service. If registration of the replacement DCM part is attempted using the Techstream utility after the account has become inactive, the registration will fail, and messages such as ?ATX webserver is Down? or ?ATX error? will be displayed.
T-SB-0316-17_Rev2019-12-16. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. TSB: REVISION NOTICE November 14, 2019 Rev2: ? The Applicability has been updated to include 2019 model year Toyota vehicles. ? The Introduction and Repair Procedure sections have been updated. August 15, 2018 Rev1: ? The Applicability has been updated to include 2018 model year Highlander, Sienna, and Tacoma vehicles. ? The Introduction and Warranty Information sections have been updated. Any previous printed versions of this bulletin should be discarded. Some 2018 ? 2019 model year 2GR-FKS-equipped Camry, 2017 ? 2019 model year Highlander and Sienna, and 2016 ? 2019 model year Tacoma vehicles may exhibit a knocking noise from the vacuum pump with the engine idling. Follow the Repair Procedure in this bulletin to address this condition.
Toyota Safety Re2019-12-02. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements
T-TT-0574-192019-10-15. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. TT: Some customers may experience poor outgoing Bluetooth sound quality, this can occur for various reasons. Current multimedia systems are designed with the ability to adjust Bluetooth sound quality to compensate for echo or excessive background noise.
T-TT-0553-192019-09-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TT: The new DCA-8000 Diagnostic Charger may cause your facility?s Ground Fault Circuit Interrupter (GFCI) breaker to trip. A GFCI breaker can be tripped for various reasons, one of the reasons may be related to the DCA-8000. We are investigating this issue to determine the root cause. Other reasons the GFCI breaker may trip ? Circuit demand is too high for GFCI rating ? Worn out GFCI internal contacts ? Improper installation or wiring of GFCI breaker
T-SB-0080-192019-09-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:APPLIANCE:AIR CONDITIONER. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0033-14. ? Applicability has been updated to include 2019 model year Toyota vehicles. Service Bulletin No. T-SB-0033-14 is obsolete and any printed versions should be discarded. Some 2006 ? 2019 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. NOTE The ARINIX® Tip is NOT registered or labeled for sale or use outside the United States or Puerto Rico.
T-SB-0073-192019-07-15. Service bulletin. STRUCTURE; EQUIPMENT. TSB: TMNA Accessory Sales and Marketing has developed a Toyota paint protection film (PPF) decal (treated with a specially developed light adhesive) for 2019 ? 2020 model year Toyota vehicles. The decal comes in two sizes (2.8 in. x 8 in. and 4 in. x 8 in.) for small and large hoods and will be applied to the top of PPF for all series at TLS accessory installation facilities. The decal is intended to stay affixed to the film until delivery detail/wash. Just before customer delivery, follow the procedure in this Service Bulletin to remove the decal and any residue left by the adhesive.
T-TT-0442-17_Rev2019-05-13. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT:ELECTRICAL. TT: Safety Connect is a vehicle option which requires a subscription fee for the system to be active after the initial trial period. Once the subscription has expired the DCM (Telematics Transceiver) will be in an inactive state. In some instances, a DCM may need to be replaced even though the customer is not using the service. If registration of the replacement DCM part is attempted using the Techstream utility after the account has become inactive, the registration will fail, and messages such as ?ATX webserver is Down? or ?ATX error? will be displayed.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.