2019 Toyota Highlander Technical Service Bulletins

162 technical service bulletins (TSBs) are on record for the 2019 Toyota Highlander. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10172819Feb 4, 2020Equipment. 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
• 10172372Jan 30, 2020Equipment, Engine cooling, Engine. Technical Instructions: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 19TC04 OIL COOLER PIPE CERTAIN 2017 ? 2019 HIGHLANDER HV
• 10172371Jan 30, 2020Equipment, Engine, 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…
• 10172370Jan 30, 2020Equipment, Engine. 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.
• 10172369Jan 30, 2020Engine, Engine cooling. Frequently Asked Questions. The involved vehicles are equipped with an engine oil cooling system. The oil cooling system could experience a small leak due to a manufacturing issue. If a vehicle is continuously operated with this condition, it may result in abnormal engine noise, illumination of the Malfunction Indicator Light (MIL), and an engine oil level low message. Over time, an oil pressure warning message may…
• 10172348Jan 30, 2020Engine, Engine cooling. Technical Instructions: TECHNICAL INSTRUCTIONS FOR SPECIAL SERVICE CAMPAIGN 19TC04 OIL COOLER PIPE CERTAIN 2017 ? 2019 HIGHLANDER HV
• 10172347Jan 30, 2020Engine cooling, Engine. Dealer Package: The involved vehicles are equipped with an engine oil cooling system. The oil cooling system could experience a small leak due to a manufacturing issue. If a vehicle is continuously operated with this condition, it may result in abnormal engine noise, illumination of the Malfunction Indicator Light (MIL), and an engine oil level low message. Over time, an oil pressure warning message may be…
• 10172346Jan 30, 2020Engine cooling, Engine. Region Letter: The involved vehicles are equipped with an engine oil cooling system. The oil cooling system could experience a small leak due to a manufacturing issue. If a vehicle is continuously operated with this condition, it may result in abnormal engine noise, illumination of the Malfunction Indicator Light (MIL), and an engine oil level low message. Over time, an oil pressure warning message may be displayed…
• 10172345Jan 30, 2020Engine, Engine cooling. Dealer Email: The involved vehicles are equipped with an engine oil cooling system. The oil cooling system could experience a small leak due to a manufacturing issue. If a vehicle is continuously operated with this condition, it may result in abnormal engine noise, illumination of the Malfunction Indicator Light (MIL), and an engine oil level low message. Over time, an oil pressure warning message may be displayed…
• 10172344Jan 30, 2020Engine, Engine cooling. Region Email: The involved vehicles are equipped with an engine oil cooling system. The oil cooling system could experience a small leak due to a manufacturing issue. If a vehicle is continuously operated with this condition, it may result in abnormal engine noise, illumination of the Malfunction Indicator Light (MIL), and an engine oil level low message. Over time, an oil pressure warning message may be displayed…
• 10171406Jan 27, 2020Transmission and drivetrain. TT: Currently under investigation. Please contact TAS if you have a vehicle that exhibits a leak from the Transmission Side Cover with no signs of damage or other conditions unrelated to regardless of miles or months in service. If it?s a Sunday or holiday continue with diagnosis and repair, save all parts and details, contact TAS on the next available work day and review details with TAS engineer.
• 10171405Jan 27, 2020Equipment. 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…
• 10171457Jan 23, 2020Equipment. 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.
• 10171452Jan 17, 2020Equipment. 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…
• 10171443Jan 13, 2020Equipment. TSB: OBSOLETE NOTICE January 13, 2020: This bulletin is now obsolete. Please see T-SB-0003-20.
• 10171441Jan 13, 2020Electrical system, Brakes. TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0279-17. ? The entire bulletin has been updated. Service Bulletin No. T-SB-0279-17 is obsolete and ANY printed versions should be discarded. Some 2016 ? 2018 model year Toyota vehicles equipped with Entune? Audio (version 01013E), Entune? Audio Plus (version 010156 or 01015C), or Entune? Premium Audio (versions…
• 10169435Nov 18, 2019Equipment. 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.
• 10169334Nov 18, 2019Electrical system, Equipment. 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.
• 10169327Nov 14, 2019Equipment. 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…
• 10169406Nov 4, 2019Transmission and drivetrain. TT: Some 2018-2020 model year UA80/UB80 transmission equipped models may experience a leak from the Transmission Side Cover. This issue is currently under investigation. Vehicles are being sought regardless of months in service or mileage. Only seeking vehicles with leaking transmissions with no other signs of damage to the side cover.
• 10168538Oct 22, 2019Engine cooling. TSB: Some 2017 ? 2019 model year Highlander HV vehicles may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs): ? P0301 ? Cylinder 1 Misfire Detected ? P0302 ? Cylinder 2 Misfire Detected ? P0303 ? Cylinder 3 Misfire Detected ? P0304 ? Cylinder 4 Misfire Detected ? P0305 ? Cylinder 5 Misfire Detected ? P0306 ? Cylinder 6 Misfire Detected Follow the Repair Procedure in this…
• 10168537Oct 21, 2019Steering. 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…
• 10168529Oct 17, 2019Equipment. Safety Recall and Service Campaign - Technician Certification Requirements
• 10166024Sep 18, 2019Electrical system, Equipment. 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.
• 10164917Aug 22, 2019Back-over prevention (rear camera). TT: Some customers may experience a rattle noise from the roof area while driving at highway speeds, on vehicles equipped with Toyota Genuine Accessory Roof Rack Cross Bars. This noise may originate on the LH side of the cross bar, from cross bar sub-assembly to cross bar end support due to excessive free play. Note - Affected vehicles are equipped with: * Cross Bar Kit Part #: PT278-48170. * Silver, Black, or…
• 10164899Aug 12, 2019Electrical system. TT: Voice navigation prompts and feedback beeps are inoperative after starting the engine. This condition only occurs on Platinum grade vehicles.
• 10163727Jul 30, 2019Electrical system, Engine. TT: Some 2017, 2018 and 2019 model year Highlanders are equipped with an engine Stop & Start system. It is important to use part number 28800-31550 when Stop & Start equipped Highlanders need battery replacement. There is no recommended Truestart battery that is applicable for Stop & Start Highlanders. The Stop & Start equipped battery is specially designed for deep discharges, and it is of a design called enhanced…
• 10164352Jul 16, 2019Equipment, Electrical system. 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…
• 10164345Jul 9, 2019Equipment. 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…
• 10164330Jul 1, 2019Transmission and drivetrain, Electrical system, Engine. TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections have been updated. October 30, 2017 Rev1: ? Applicability has been updated to include 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin…
• 10162757Jun 24, 2019Body and 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…
• 10162773Jun 19, 2019Electrical system. TT: The new 12V Battery Warranty Testers (DSS-5000 & DCA-8000) require certain information to generate a test result and warranty code. Below is an explanation of what information is required when testing a 12V battery on the new Warranty Battery Testers.
• 10161537May 22, 2019Electrical system. TT: Some vehicles may have a U0110 DTC.
• 10162257May 21, 2019Body and structure. Crc spray quick referenceguide
• 10159739Apr 30, 2019Equipment. 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.
• 10159725Apr 17, 2019Visibility (wipers, defrost, mirrors), Lane departure, Equipment. TT: The blind spot monitor (BSM) sensor angle inspection is used to confirm that the BSM sensor is within the specified angle before performing axis beam adjustment. When used in conjunction with the repair manual, these BSM tips leverage SSTs and readily available tools to support sensor angle confirmation in varying shop environments.
• 10159707Apr 11, 2019Equipment, Electrical system. TSB: Some 2019 model year Highlander and Highlander Hybrid vehicles equipped with JBL audio may exhibit inoperative 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.
• 10155248Feb 28, 2019Electrical system. 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.
• 10155247Feb 28, 2019Equipment, Electrical system. 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…
• 10155238Feb 25, 2019Equipment. TT: HVAC drain tube is found to be blocked/clogged.
• 10155237Feb 22, 2019Wheels. TT: Some Highlander and Sienna clad/chrome wheels might experience bubbling and/or peeling off on the wheel coating (see picture below). Table below shows the wheel part numbers affected by the issue.
• 10155232Feb 15, 2019Fuel system. TSB: Some 2017 ? 2019 model year Highlander vehicles may exhibit a knocking noise from the fuel tank area at idle, vehicle stationary, with a full tank of gasoline. Follow the Repair Procedure in this bulletin to address this condition.
• 10154800Feb 7, 2019Equipment. TSB: REVISION NOTICE February 7, 2019 Rev2: * Applicability has been updated to include 2010 - 2014 model year Matrix, 2017 - 2019 model year C-HR, 2019 model year Corolla Hatchback, and 2018 - 2019 model year Toyota vehicles. G418 The Introduction and Repair Procedure sections have been updated. March 7, 2017 Rev1: * Applicability has been updated to include 2017 model year Toyota vehicles. Any previous printed…
• 10154797Feb 6, 2019Equipment. 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 (Telematics transceiver) inoperative conditions, refer to the procedure below to prevent unnecessary parts replacement.
• 10154795Feb 6, 2019Equipment. Safety Recall and Service Campaign - Technician Certification Requirements
• 10154793Feb 5, 2019Suspension. TSB: REVISION NOTICE February 5, 2019 Rev2: ? Applicability has been updated to include 2019 model year Highlander and Highlander HV vehicles. ? The Introduction, Warranty Information, and Repair Procedure sections have been updated. February 23, 2018 Rev1: ? Applicability has been updated to include 2018 model year Highlander and Highlander HV vehicles. ? The Introduction, Warranty Information, and Repair…
• 10153248Jan 23, 2019Electrical system. TT: Some 2017, 2018 and 2019 model year Highlanders are equipped with an engine Stop & Start system. It is important to use part number 28800-31550 when Stop & Start equipped Highlanders need battery replacement. There is no recommended Truestart battery that is applicable for Stop & Start Highlanders. The Stop & Start equipped battery is specially designed for deep discharges, and it is of a design called enhanced…
• 10153246Jan 16, 2019Engine cooling. TT: The current engine active test ?Control the Injection Mode? is not operating as desired when controlling the direct injectors manually on 2GR-FKS engines. When direct injection is started and then stopped using the active test, current ECU logic does not turn off the direct injectors and can cause DTCs P017200, P017500 and P0160300. To avoid this condition, technicians should raise engine RPM when changing back…
• 10153265Jan 4, 2019Equipment. 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.
• 10153237Dec 18, 2018Equipment. TT: Voice navigation prompts and feedback beeps are inoperative after starting the engine. This condition only occurs on Platinum grade vehicles.

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