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2021 Toyota Mirai
95 Technical Service Bulletins (TSBs)
TSB List for the 2021 Toyota Mirai
Technical Service Bulletins (TSBs) for the 2021 Mirai are official communications between Toyota & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.
SUSPENSION
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TSB #TSB004723
TSB: Some 2021 ? 2023 model Mirai vehicles may exhibit a creaking or clicking type noise from the rear suspension member. This condition may occur when braking or when driving over speed bumps and uneven surfaces. Read More »
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TSB #T-SB-0047-23
TSB: Some 2021 ? 2023 model Mirai vehicles may exhibit a creaking or clicking type noise from the rear suspension member. This condition may occur when braking or when driving over speed bumps and uneven surfaces. Read More »
SERVICE BRAKES, HYDRAULIC
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TSB #T-SB-0043-23
TSB: Some 2021 ? 2022 model year Mirai vehicles may exhibit a MIL ON condition with one or both of the following Diagnostic Trouble Codes (DTCs) present: ?P1F6C71 ? Air Sealing Valve Actuator Stuck ?P1F6E71 ? Air Pressure Regulating ... Read More »
PARKING BRAKE
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TSB #TSB004321Rev2
TSB: Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may exhibit one or more of the following conditions: ?Barge in function defaulted to OFF. ?Limited phone book grammar. Read More »
ENGINE AND ENGINE COOLING
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TSB #T-PANT-2024-004-
This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website. Read More »
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TSB #T-SB-0047-23
TSB: Some 2021 ? 2023 model Mirai vehicles may exhibit a creaking or clicking type noise from the rear suspension member. This condition may occur when braking or when driving over speed bumps and uneven surfaces. Read More »
ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION
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TSB #T-PANT-2024-004-
This is to advise of various price adjustments that will affect Toyota Genuine Motor Oil and Long Life Coolant, effective March 1, 2024. These products are ordered through the Toyota Complete Maintenance Care (TCMC) website. Read More »
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
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TSB #TSB011120Rev1
TSB: When certain vehicle ECUs are replaced, the ECU security key must be written in order for that ECU to communicate on the vehicle network. Read More »
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE
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TSB #T-SB-0107-20
TSB: Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Read More »
ELECTRICAL SYSTEM
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TSB #T-SB-0013-24
TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Read More »
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TSB #TSB008523A
TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32?F or 0?C). Read More »
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TSB #TSB008523
TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32?F or 0?C). Read More »
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TSB #T-SB-0107-20 Rev
TSB: Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated without replacing the ECU. Read More »
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TSB #22TC04
TI: TECHNICAL INSTRUCTIONS SPECIAL SERVICE CAMPAIGN 22TC04 SOFTWARE UPDATE FOR EV CONTROL COMPUTER CERTAIN 2021 MODEL YEAR MIRAI VEHICLES Read More »
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TSB #22TC04
DL: Due to improper programming in the EV Control Computer, under certain conditions, the vehicle may not start. A warning message will be displayed in the instrument panel display Read More »
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TSB #22TC04 Remedy No
RL: Due to improper programming in the EV Control Computer, under certain conditions, the vehicle may not start. A warning message will be displayed in the instrument panel display Read More »
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TSB #MEMORANDUM
TI: TECHNICAL INSTRUCTIONS SPECIAL SERVICE CAMPAIGN 22TC04 SOFTWARE UPDATE FOR EV CONTROL COMPUTER CERTAIN 2021 MODEL YEAR MIRAI VEHICLES Read More »
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TSB #T623
DD: SPECIAL SERVICE CAMPAIGN 22TC04 (Remedy Notice) Dealer Letter and Technical Instructions Available on TIS Certain 2021 Model Year Mirai Software Update for the EV Control Computer Read More »
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TSB #T-TT-0599-20 Rev
TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns Read More »
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TSB #T-SB-0080-21
TSB: Some 2021 model year Mirai vehicles may exhibit a MIL ON condition with Diagnostic Trouble Code (DTC) P060A47 (Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure) present. Read More »
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TSB #T-SB-0118-20
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 ... Read More »
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TSB #T-SB-0040-20
TSB: Hybrid vehicles are equipped with two types of batteries: ?Hybrid Vehicle (HV) battery ?Auxiliary (12V) battery If the hybrid vehicle is put into storage, the State-Of-Charge (SOC) of its HV battery and auxiliary battery ... Read More »
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TSB #T-SB-0035-20
TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »
ELECTRICAL SYSTEM:12V/24V/48V BATTERY
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TSB #TTT073823
TT: MIL On with DTCs P1F6C71 and/or P1F6E71 Read More »
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TSB #T-SB-0040-20 Rev
TSB: Hybrid vehicles are equipped with two types of batteries: ?Hybrid Vehicle (HV) battery ?Auxiliary (12V) battery If the hybrid vehicle is put into storage, the State-Of-Charge (SOC) of its HV battery and auxiliary battery will ... Read More »
ELECTRICAL SYSTEM:WIRING
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TSB #T-SB-0003-22
TSB This Service Bulletin includes guidelines meant to help determine whether to repair or replace a wire harness assembly based on damage type. Read More »
ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:KEY/SENDER
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TSB #T-SB-0064-18 Obs
OBSOLETE NOTICE March 11, 2024: This bulletin is now obsolete. Please see T-SB-0013-24. Read More »
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
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TSB #22TD01
DP: Due to improper programming in the EV Control Computer, under certain conditions, the vehicle may erroneously illuminate the warning message ?FCV system malfunction? in the instrument panel. Read More »
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TSB #22TD01RL
RL: Due to improper programming in the EV Control Computer, under certain conditions, the vehicle may erroneously illuminate the warning message ?FCV system malfunction? in the instrument panel. Read More »
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TSB #22TD01RL
RL: Due to improper programming in the EV Control Computer, under certain conditions, the vehicle may erroneously illuminate the warning message ?FCV system malfunction? in the instrument panel. Read More »
ELECTRICAL SYSTEM:SOFTWARE
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TSB #22TC04
TI: TECHNICAL INSTRUCTIONS SPECIAL SERVICE CAMPAIGN 22TC04 SOFTWARE UPDATE FOR EV CONTROL COMPUTER CERTAIN 2021 MODEL YEAR MIRAI VEHICLES Read More »
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TSB #T-SB-0039-20 Rev
TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. Read More »
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TSB #T-SB-0039-20 Rev
TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. Read More »
-
TSB #T-SB-0064-18 Rev
TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Read More »
ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT
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TSB #TSB008523A
TSB: Some 2016 ? 2023 model year Toyota vehicles may exhibit a hybrid system warning lamp occurring in below-freezing temperatures (below 32?F or 0?C). Read More »
VISIBILITY
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TSB #T-TT-0537-19_Rev
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. Read More »
VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REFRIGERANT HOSES AND FITTINGS
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TSB #TSB005823
TSB: The air conditioning dye injection tool kit has been developed to aid in identifying the location of air conditioning refrigerant leaks. Read More »
AIR BAGS
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TSB #TSB003220
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 ... Read More »
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TSB #Toyota Safety Re
Toyota Safety Recall and Service Campaign - Technician Certification Requirements Read More »
STRUCTURE
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TSB #TSB001221Rev2
TSB: Some 2010 ? 2022 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?. Read More »
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TSB #TSB001221Rev2
TSB: Some 2010 ? 2022 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?. Read More »
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TSB #T-SB-0118-20
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 ... Read More »
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TSB #T-SB-0027-20 Rev
TSB: TMNA Accessory Sales and Marketing has developed a Toyota paint protection film (PPF) decal (treated with a specially developed light adhesive) for 2021 model year Toyota vehicles. The decal comes in two sizes (2.8 in. x 8 in. Read More »
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TSB #T-SB-0028-20 Rev
TSB: All 2021 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. Read More »
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TSB #T-TT-0613-20
TT: Unibody vehicles commonly have lashing holes on the under body used for securing the vehicle during logistics -The lashing holes are intended to be plugged during Pre-Delivery Service (PDS) -The plugs are: oRequired for ... Read More »
VEHICLE SPEED CONTROL
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TSB #TSB003220
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 ... Read More »
TIRES
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TSB #Toyota PRO19-02
POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Toyota. Read More »
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TSB #T-SB-0034-21
TSB During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »
WHEELS
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TSB #Toyota PRO19-02
POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Toyota. Read More »
-
TSB #T-SB-0034-21
TSB During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »
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TSB #T-SB-0029-20 Rev
TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »
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TSB #T-SB-0029-20 Rev
TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »
TRAILER HITCHES
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TSB #T-SB-0029-20 Rev
TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »
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TSB #T-SB-0029-20 Rev
TSB: During the manufacturing process, tires are mounted on the vehicle as matched sets to help reduce conditions such as pulling or drifting. Read More »
SEATS
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TSB #T-SB-0012-21 Rev
TSB: Some 2010 ? 2022 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?. Read More »
-
TSB #T-SB-0012-21
TSB: Some 2010 ? 2021 model year Toyota vehicles may exhibit paint stains after the removal of Rapgard?. The paint stains may appear to be under the clear coat but are usually under wrinkles in the Rapgard?. Read More »
ELECTRONIC STABILITY CONTROL:AUTOMATIC (ASC)
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TSB #T-SB-0047-23
TSB: Some 2021 ? 2023 model Mirai vehicles may exhibit a creaking or clicking type noise from the rear suspension member. This condition may occur when braking or when driving over speed bumps and uneven surfaces. Read More »
LANE DEPARTURE
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TSB #22TD01
DP: Due to improper programming in the EV Control Computer, under certain conditions, the vehicle may erroneously illuminate the warning message ?FCV system malfunction? in the instrument panel. Read More »
-
TSB #T-TT-0537-19_Rev
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. Read More »
BACK OVER PREVENTION
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TSB #T-SB-0047-23
TSB: Some 2021 ? 2023 model Mirai vehicles may exhibit a creaking or clicking type noise from the rear suspension member. This condition may occur when braking or when driving over speed bumps and uneven surfaces. Read More »
COMMUNICATION:MANUFACTURER TELEMATICS
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TSB #TTT073723
TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. Read More »
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TSB #TTT069522
TT: To improve customer support of telematics connected services features, additional resources have been provided in the Service Lane - Knowledge Center. Read More »
EQUIPMENT
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TSB #TSB003220
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 ... Read More »
-
TSB #TSB004321Rev2
TSB: Some 2020 model year vehicles equipped with Audio Plus (version 1021) or Premium Audio (version 1021) or earlier may exhibit one or more of the following conditions: ?Barge in function defaulted to OFF. ?Limited phone book grammar. Read More »
-
TSB #TTT059920 Rev4
TT: Vehicle control apps might not operate as expected at times due to preconditions (normal operating parameters) not being established, vehicle settings and/or network/cellular coverage concerns Read More »
-
TSB #T-SB-0050-21
TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »
-
TSB #T-SB-0035-21
TSB: 2022 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. Read More »
-
TSB #T-SB-0032-20 Rev
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 ? 2021 model year vehicles may be available provided the ... Read More »
-
TSB #T-SB-0118-20
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 ... Read More »
-
TSB #T-SB-0035-20 Rev
TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »
-
TSB #T-SB-0037-20 Rev
TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »
-
TSB #T-SB-0028-20 Rev
TSB: 2021 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. Read More »
-
TSB #T-SB-0027-20 Obs
TSB: OBSOLETE NOTICE August 3, 2020: This bulletin is no longer applicable and is now obsolete. Read More »
-
TSB #T-SB-0037-20 Rev
TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »
-
TSB #T-TT-0613-20
TT: Unibody vehicles commonly have lashing holes on the under body used for securing the vehicle during logistics -The lashing holes are intended to be plugged during Pre-Delivery Service (PDS) -The plugs are: oRequired for ... Read More »
-
TSB #T-TT-0606-20
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. Read More »
-
TSB #T-SB-0039-20
TSB: An initialization procedure is required to activate the Entune? 3.0 App Suite Connect for Audio, Audio Plus, and Premium Audio head units before they are used for the first time on new vehicles. Read More »
-
TSB #T-SB-0037-20
TSB: Long-term or off-site storage requires special care to keep vehicles factory fresh and ready for delivery. Read More »
EQUIPMENT:ELECTRICAL
-
TSB #22TD01TI
TI: TECHNICAL INSTRUCTIONS LIMITED SERVICE CAMPAIGN 22TD01 SOFTWARE UPDATE FOR EV CONTROL COMPUTER CERTAIN 2021 MODEL YEAR MIRAI VEHICLES Read More »
-
TSB #T-SB-0035-20 Rev
TSB: A battery in a stored vehicle is subject to conditions that can reduce its performance and service life. These conditions include storage period, temperature, parasitic drain, and battery load. Read More »
EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES
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TSB #T-SB-0064-18 Rev
TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased and can never be reused. Read More »
EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM)
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TSB #TSB010622
TSB: Some 2018 ? 2022 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. Read More »
-
TSB #T-SB-0106-22
TSB: Some 2018 ? 2022 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. Read More »
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
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TSB #22TD01TI
TI: TECHNICAL INSTRUCTIONS LIMITED SERVICE CAMPAIGN 22TD01 SOFTWARE UPDATE FOR EV CONTROL COMPUTER CERTAIN 2021 MODEL YEAR MIRAI VEHICLES Read More »
-
TSB #Toyota PRO19-02
POL: This consolidated Tire Warranty Guide contains the complete warranty terms for all brands of ground and spare tires currently in use by Toyota. Read More »
-
TSB #Toyota PRO21-UFR
UPDATES TO THE 2014-2021 TOYOTA UNIVERSAL FLAT RATE MANUAL Read More »
-
TSB #T-SB-0027-20 Obs
TSB: OBSOLETE NOTICE August 3, 2020: This bulletin is no longer applicable and is now obsolete. Read More »
-
TSB #T-PG007-01
Replacement vin plates. Read More »
-
TSB #T-PG002-91
Product general information. Read More »
EQUIPMENT ADAPTIVE/MOBILITY
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TSB #T-SB-0035-21
TSB: 2022 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. Read More »
-
TSB #T-SB-0028-20 Rev
TSB: 2021 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. Read More »
-
TSB #T-SB-0028-20 Rev
TSB: All 2021 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. Read More »
EQUIPMENT:APPLIANCE:AIR CONDITIONER
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TSB #T-SB-0080-19 Rev
TSB: Some 2006 ? 2022 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. Read More »
UNKNOWN OR OTHER
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TSB #TSB010622
TSB: Some 2018 ? 2022 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. Read More »
-
TSB #TTT073723
TT: A very small percentage of customers experience operational difficulties with some telematics features which they cannot resolve on their own. Read More »