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Service bulletins for the 2020 Toyota Supra

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.

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

By type

By component

By topic

Bulletins, newest first
T-TT-0639-212021-03-15. Service bulletin. POWER TRAIN. TT: Customers may state they have a fluid leak from under the vehicle or technicians may notice a leak while performing other work.
T-SB-0011-212021-03-15. Service bulletin. ELECTRICAL SYSTEM. TSB: This Service Bulletin provides parts information and repair procedures for wire harnesses, wire terminals, and connectors for 2020-2021 model year Supra vehicles.
T-TT-0628-202020-11-30. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TT: HVAC drain tube is found to be blocked/clogged.
T-TT-0578-19 Rev2020-11-23. Service bulletin. STEERING; ELECTRICAL SYSTEM; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. 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-0158-18 Rev2020-11-23. Service bulletin. EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY. 2020 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. During Pre-Delivery Service (PDS), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seat floor mats to the vehicle carpet using the floor mat retainers. If installation instructions are included in the floor mat kit, place the instructions in the vehicle?s glove box for customer reference.
T-TT-0553-19 Rev2020-08-24. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. 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-0073-19 Obs2020-08-17. Service bulletin. STRUCTURE:BODY. OBSOLETE NOTICE July 31, 2020: This bulletin is no longer applicable and is now obsolete.
T-TT-0468-17 Rev2020-08-17. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. TT: HVAC drain tube is found to be blocked/clogged.
Toyota Safety Re2020-04-20. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements
Safety Recall an2020-03-30. Service bulletin. EQUIPMENT. Safety Recall and Service Campaign - Technician Certification Requirements
T-SB-0002-202020-02-24. Service bulletin. UNKNOWN OR OTHER. TSB: Some 2020 model year Supra vehicles equipped with navigation require a new process for updating map data. This procedure is unique to Supra and is available to customers at any time during their map update service period. Updated map data is released periodically, and there is no activation key/code required to update the vehicle map during the valid map update period. Follow the Repair Procedure in this bulletin to update the vehicle map data. NOTE This procedure does NOT apply if the map update period has expired.
T-TT-0591-202020-02-24. Service bulletin. PARKING BRAKE; POWER TRAIN; SEAT BELTS. TT: A message to replace the battery may indicate on the dash. This message can display when the voltage drops too low and is to assure the customer receives the vehicle with a fully charged battery. Due to the high amp draw when the vehicle is not shut down, this vehicle depletes the battery charge much quicker than other Toyota vehicles, so dealers must use care to maintain battery charge on their lot. Care should be made to use the key fob to lock the vehicle upon every exit of the vehicle. If you are going to remain in the vehicle, press and hold the power button on the radio.
T-SB-0006-202020-02-18. Service bulletin. BACK OVER PREVENTION. TSB: Some 2020 model year Supra vehicles may exhibit a noise during normal seat operation while moving in the forward or rearward direction. This condition occurs more frequently in hot conditions where the vehicle interior temperatures are high. Follow the Repair Procedure in this bulletin to address this condition.
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-0578-192019-12-02. Service bulletin. STEERING. 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-0151-192019-11-18. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. TSB: Flash reprogramming allows the Electric Control Unit (ECU) software to be updated without replacing the ECU. Flash calibration updates for the Supra are released as field-fix procedures described in individual service bulletins. This bulletin details the ECU flash reprogramming process and outlines use of the Toyota-ISTA Diagnostic Software. BEFORE beginning any reprogramming, ensure that the latest version of Toyota-ISTA is downloaded and installed from TIS. NOTE ECU is a Toyota term used to describe integrated computerized devices responsible for managing the operation of a system or subsystem. For the purposes of this bulletin, the term ?ECU? is used as a generic label for the following SAE J1930 standard references: ? Powertrain Control Module (PCM) ? Engine Control Module (ECM) ? Transmission Control Module (TCM) ? Any other Toyota specific control unit
T-TT-0564-192019-09-16. Service bulletin. EQUIPMENT:ELECTRICAL. TT: Some TdPR customers may experience the concierge services being inoperative when attempting to use the multimedia system.
T-TT-0556-192019-09-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TT: When testing the battery during PDS with either the DSS-5000 or DCA-8000 battery diagnostic tools, the battery tester may provide inaccurate results if it is connected to the remote battery posts under the hood.
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-0083-192019-09-03. Service bulletin. ELECTRICAL SYSTEM; STRUCTURE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. TSB: Pre-Delivery Service (PDS) is a critical step in satisfying our new car customers. Customer feedback indicates the following areas deserve special attention when performing PDS: ? Careful inspection for paint chips/scratches and body dents/dings. ? Proper operation of electrical accessories. ? Interior cleanliness. ? Proper function of mechanical systems. Customer retention and proper maintenance of vehicles are and have always been a major focus for Toyota. To help remind customers that regular service is essential to the proper maintenance of the vehicle, dealers are required to install a service reminder sticker before delivery. By doing this, customers will be reminded to return to your dealership for service. Your current service reminder sticker may be used. (See PDS Check Sheet item 9 of ?Final Inspection and Cleaning.?) A PDS Check Sheet has been developed for the 2020 model year Supra. Bulletins are available for items in bold type.
T-SB-0081-192019-09-03. Service bulletin. ELECTRICAL SYSTEM; EQUIPMENT. TSB: Transport mode disables various electrical functions while the vehicle is being shipped to help prevent the vehicle battery from being drained. While in transport mode, the ?Transport Mode Indicator? is displayed on the combination meter. The indicator will turn off after transport mode is deleted. Follow the procedures in this bulletin during Pre-Delivery Service (PDS) to activate the navigation maps and delete transport mode using the Supra diagnostic application (ISTA). NOTE To perform navigation map activation during the Transport Mode Deletion Procedure, the following items must be completed in advance. Refer to the Ordering License Key section of this bulletin for more details. ? Dealer user registration on www.supramapactivation.com ? License key order placed and completed (1 ? 3-day process)
T-SB-0158-18-Rev2019-09-03. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY. TSB: REVISION NOTICE July 03, 2019 Rev1: ? Applicability has been updated to include 2020 model year Supra vehicles. ? The Hook and Loop Style section has been added. Any previous printed versions of this bulletin should be discarded. 2020 model year Toyota vehicles are equipped with driver side floor mat retainers to secure the floor mat in the correct position. In addition, some models may also utilize retainers for passenger side and rear seat floor mats. During Pre-Delivery Service (PDS), follow the appropriate Installation Procedure to attach the driver side, and if applicable, the passenger side and rear seat floor mats to the vehicle carpet using the floor mat retainers. If installation instructions are included in the floor mat kit, place the instructions in the vehicle?s glove box for customer reference. CAUTION ? ALWAYS verify the floor mat is designed specifically for the model and model year it is being installed in. ? ONLY use floor mats that can be secured using the retainers. ALL OEM Toyota floor mats are specifically designed to fit correctly and be secured using the retainers. ? Make sure the floor mat is properly placed on the vehicle carpet and secured with the retainers. If the driver side floor mat is NOT properly placed and secured, it could slip and interfere with the movement of the pedals during driving and may cause an accident. ? Verify the operation of the accelerator, brake, and clutch (if equipped) pedals and clearance to the mat. ? NEVER install more than one floor mat at a time in the driver?s seating position. ? If applicable, ANY secondary set of floor mats (based upon customer preference, such as the all-weather floor mats or other floor mats) MUST be placed in the trunk with ALL the packaging material intact. Do NOT install the secondary mat on top of the primary floor mat already installed in the driver?s seating position.
T-TT-0549-192019-07-15. Service bulletin. ELECTRICAL 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.
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-SB-0050-192019-06-24. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. The following guidelines should be performed to minimize vehicle component/part degradation due to extended vehicle storage conditions. Long-term storage can affect a vehicle?s systems and components. Any problems that are found should be corrected immediately.

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