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Service bulletin T-TT-0578-19 Rev

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)
TypeService bulletin
NHTSA id10182983
Published by NHTSA2020-11-23
Manufacturer's numberT-TT-0578-19 Rev
Manufacturer's date2020-10-12
NHTSA componentSTEERING; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

NHTSA's summary

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.

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

Electrical system, Equipment and accessories, Steering

Vehicles listed
TOYOTA 4RUNNER2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA 862017, 2018, 2019, 2020
TOYOTA AVALON2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA C-HR2018, 2019, 2020
TOYOTA CAMRY2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA COROLLA2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA COROLLA HATCHBACK2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA COROLLA IM2017, 2018
TOYOTA FJ CRUISER2011, 2012, 2013, 2014
TOYOTA HIGHLANDER2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA LAND CRUISER2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
TOYOTA LAND CRUISER2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA MATRIX2009 to 2014
TOYOTA MIRAI2016, 2017, 2018, 2019, 2020
TOYOTA PRIUS2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA PRIUS C2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA PRIUS PRIME2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA PRIUS V2012, 2013, 2014, 2015, 2016, 2017
TOYOTA PRIUS V2018 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA RAV42009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA RAV4 EV2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA RAV4 HYBRID2017 (the catalog's model; the bulletin names a series or trim of it)
TOYOTA SEQUOIA2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA SIENNA2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA SUPRA2020
TOYOTA TACOMA2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA TUNDRA2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA VENZA2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
TOYOTA YARIS2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020
TOYOTA YARIS IA2017, 2018
TOYOTA redundant RAV4 HV2016

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

Recalls for the same vehicles and component
25V8760002025-12-17. EQUIPMENT ADAPTIVE/MOBILITY:WHEELCHAIR RESTRAINTS/SECUREMENT:LATCH/ANCHOR:
25V6360002025-09-23. ELECTRICAL SYSTEM:STARTER ASSEMBLY:RELAY
20235892023-11-01. Electrical
23V7340002023-11-01. ELECTRICAL SYSTEM:12V/24V/48V BATTERY
22V4800002022-07-06. EQUIPMENT:OTHER:LABELS
20217232021-11-24. Electrical
20217182021-11-23. Steering
21V9200002021-11-23. STEERING:HYDRAULIC POWER ASSIST SYSTEM; STEERING:RACK AND PINION
21V6880002021-09-02. EXTERIOR LIGHTING:HEADLIGHTS; ELECTRICAL SYSTEM:WIRING
20V7340002020-11-25. AIR BAGS:FRONTAL; STEERING:COLUMN

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
22TE092026-06-04. Warranty extension. Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.
T-SB-0021-262026-04-08. Service bulletin. Some 2020 – 2024 model year Highlander and Highlander Hybrid vehicles may exhibit a condition in which the air conditioner does not cool due to a leak and/or corrosion in the rear underbody air conditioner tube and accessory assembly. The anti-corrosion material has been updated to reduce the possibility of this condition.
T-SB-0106-22 Rev22026-02-11. Service bulletin. OBSOLETE NOTICE January 30, 2026: This bulletin is now obsolete. Please see T-SB-0001-26.
T-SB-0001-262026-02-11. Service bulletin. Some 2018 – 2024 model year Toyota vehicles equipped with a Premium Audio with Dynamic Navigation System require a Special Service Tool (SST) USB flash drive to update the map, points of interest, and system software.
T-TT-0797-262026-02-11. Service bulletin. Some RAV4 vehicles power seat where the automatic seat adjustment by the memory function does not work.
22TE092026-02-11. Warranty extension. Although the HV Floor Under Wire Harness and Rear Traction Motor Cable is covered by Toyota’s New Vehicle Limited Warranty for 3 years or 36,000 miles (whichever comes first), we at Toyota care about the customers’ ownership experience. Toyota is providing extended coverage under this Customer Support Program for repairs related to excessive corrosion to the wire harness connections at the Rear Motor Generator. Excessive corrosion can cause AM Radio Static during certain drive cycles, or the vehicle may not start.
25TD012025-10-08. Service campaign. The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start.
25TD012025-10-08. Service bulletin. TECHNICAL INSTRUCTIONS FOR 25TD01 REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2019 - 2024 RAV4 HV (AWD), 2021- 2024 RAV4 PRIME, 2020-2024 HIGHLANDER HV (AWD), 2021-2024 VENZA HV, 2023-2024 CROWN HV VEHICLES
25TD012025-10-08. Service campaign. The subject vehicles are equipped with a rear motor unit and an HV Floor Under Wire that provide high voltage to operate the motor. Mud, water, or road salt could potentially enter the HV Floor Underwire connector housing and could cause corrosion over time. Excessive corrosion could cause AM Radio Static during certain driving cycles, or the vehicle may not start.
25TD012025-10-08. Service bulletin. TECHNICAL INSTRUCTIONS FOR 25TD01 REAR TRACTION MOTOR CABLE CORROSION CERTAIN 2019 - 2024 RAV4 HV (AWD) 2021- 2024 RAV4 PRIME 2020-2024 HIGHLANDER HV (AWD) 2021-2024 VENZA HV 2023-2024 CROWN HV