2021 Toyota Mirai Problems: 7 Known Issues
2021 model year · 950+ owner reports · Updated November 2026
According to Au7o's analysis of 950+ owner reports, the 2021 Toyota Mirai has 7 documented known issues, with 1 rated critical. The most serious is Fuel cell system warnings from control software and stuck air valves — campaigns 22TD01 / 22TC04, bulletin T-SB-0043-23. The most commonly reported issue is Real-world range below the EPA estimate (owner reports) with 600 owner reports. DIY maintenance guides at au7o.io.
2021 · XLE · All engines
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All 7 Known Issues
NHTSA Recalls4 recalls
BACK OVER PREVENTION:DISPLAY FUNCTION
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2023 Mirai, Lexus LS500, LS500H, 2023-2024 Lexus ES250, ES300H, ES350, 2024 Lexus LC500, and LC500H vehicles equipped with a Panoramic View Monitor (PVM) system. Due to incorrect programming of the parking-assist electronic control unit (ECU) software, the rearview camera image may not immediately display within a couple of seconds after the shifter is placed into reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
BACK OVER PREVENTION:DISPLAY FUNCTION
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2022-2026 Toyota, Lexus, and Subaru Solterra vehicles equipped with a Panoramic View Monitor (PVM) system. Please see the recall report for a complete list of models. A software error may cause the rearview camera to freeze or display a blank screen when the vehicle is in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
ELECTRONIC STABILITY CONTROL (ESC):CONTROL MODULE:SOFTWARE
Toyota Engineering & Manufacturing (Toyota) is recalling certain 2022 Lexus LX 600, Lexus NX 350h, Lexus NX 450h+, Toytoa RAV4 Hybrid, 2021-2022 Lexus LS 500h, Toyota Mirai, RAV4 PRIME, Sienna, Venza, and 2020-2022 Toyota Highlander Hybrid vehicles. The Skid Control ECU software may not turn on the Vehicle Stability Control (VSC) system when the vehicle is restarted after the driver has disabled the VSC system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 126, "Electronic Stability Control Systems."
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
Toyota Motor Engineering & Manufacturing (Toyota) is recalling certain 2025 Lexus UX Hybrid, 2024 Lexus GX, Toyota Mirai, and 2024-2025 Toyota Land Cruiser Hybrid vehicles. The instrument panel cluster combination meter may fail to display certain warnings or indicators. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 101, "Control and Displays" and in addition, for the subject Mirai vehicles, FMVSS 305, "Electric-powered vehicles: Electrolyte Spillage and Electrical Shock Protection."
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Frequently Asked Questions
What are the most common Toyota Mirai problems?
According to Au7o's analysis of 950+ owner reports, the 2021 Toyota Mirai has 7 documented issues. The most frequently reported are: Fuel cell system warnings from control software and stuck air valves — campaigns 22TD01 / 22TC04, bulletin T-SB-0043-23, Electric heater assembly can stop working — Customer Support Program 26TE03, Hybrid system warning in below-freezing weather from high-voltage relays — bulletin T-SB-0085-23. Of these, 1 is rated critical and should be addressed promptly.
Is the Toyota Mirai reliable?
The 2021 Toyota Mirai has 7 known issues documented across 950+ owner reports. 1 issue is rated critical: Fuel cell system warnings from control software and stuck air valves — campaigns 22TD01 / 22TC04, bulletin T-SB-0043-23. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
What is the 2021-2023 Toyota Mirai Fuel cell system warnings from control software and stuck air valves — campaigns 22TD01 / 22TC04, bulletin T-SB-0043-23?
On some early 2021 Mirai, improper programming in the EV Control Computer can display an erroneous "FCV system malfunction" warning (campaign 22TD01) or, on others, prevent the car from starting while a warning message is shown (campaign 22TC04). Some 2021–2022 Mirai can turn on… Severity: high.
What is the 2021-2024 Toyota Mirai Electric heater assembly can stop working — Customer Support Program 26TE03?
Toyota says the electric heater assembly on certain second-generation Mirai could fail when exposed to stress over time, causing the heater to become inoperative. It affects certain 2021–2024 Toyota Mirai built mid-June 2021 to mid-December 2023 (Toyota Customer Support Program 2… Severity: medium.
What is the 2021-2023 Toyota Mirai Hybrid system warning in below-freezing weather from high-voltage relays — bulletin T-SB-0085-23?
Some Toyota electrified vehicles, including second-generation Mirai, may show a hybrid system warning lamp in below-freezing temperatures (below 32°F / 0°C), with code P1C8449 and/or P300449 (high-voltage power resource circuit short) stored. It affects 2021–2023 Toyota Mirai bui… Severity: medium.
What is the 2021-2022 Toyota Mirai Stability control may stay off after a restart — recall 22V239?
Because of incorrect Skid Control ECU software, if the driver manually turns off Vehicle Stability Control (VSC) and then turns the ignition off and back on while keeping the brake pedal pressed, VSC does not return to its default ON setting at the next start. The car then does n… Severity: medium.
What is the 2021-2023 Toyota Mirai Real-world range below the EPA estimate (owner reports)?
Owners report that real-world range on a full hydrogen fill falls short of the EPA estimate Toyota advertises (up to 402 miles on the XLE grade), with owner reports of about 310 miles, an indicated 340 to 350 miles, and in other reports never more than 260 miles. Other owners rep… Severity: low.
What is the 2021 Toyota Mirai Check-engine light with code P060A47 on early 2021 Mirai — bulletin T-SB-0080-21?
Some early 2021 Mirai may turn on the check-engine light (MIL) with code P060A47 (Hybrid/EV Battery Energy Control Module Monitoring Processor Watchdog / Safety MCU Failure). Toyota modified the FCV control computer logic to reduce the possibility of this condition. It affects 20… Severity: low.
What is the 2021-2023 Toyota Mirai Creak or click from the rear suspension over bumps or when braking — bulletin T-SB-0047-23?
Some second-generation Mirai may make a creaking or clicking noise from the rear suspension member when braking or when driving over speed bumps and uneven surfaces. It affects 2021–2023 Toyota Mirai built before the bulletin's production-change VIN JTDAAAAA#PA009091 (T-SB-0047-2… Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.