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2020 Toyota Supra electrical problems

moderate Owners of the 2020 Toyota Supra have filed 4 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →

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Complaints
4
Recalls
1
Avg fix
$850
electrical complaints on the Toyota Supra, by model year
Model yearelectrical complaints
2020 Supra (this page) 4
2021 Supra 8
What stands out

Owners are still filing on this — the most recent NHTSA electrical complaint for this vehicle was logged 41 days ago.

Electrical accounts for 25% of all owner complaints filed against this vehicle, across 3 categories tracked.

Related recalls

severe NHTSA 25V636000 September 23, 2025

BMW of North America, LLC (BMW) is recalling certain 2019-2021 BMW 330i, 2019-2022 BMW Z4, 2020-2022 BMW 530i, X3, X4, Toyota Supra, 2021-2022 BMW 430i, 430i Convertible, and 2022 BMW 230i vehicles

A short circuit in the starter relay may increase the risk of a fire.

Fix: Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Owner notification letters were mailed February 6, 2026. Owners may contact BMW customer service at 1-800-525-7417. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov November 14, 2025.

Is there a fix? Manufacturer service bulletins

The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.

Service Campaign 24TD04 Jul 2024

Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.

full bulletin at NHTSA ↗
Service Campaign 24TD04 Jul 2024

Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.

full bulletin at NHTSA ↗
Service Bulletin 24TD04 Jul 2024

TECHNICAL INSTRUCTIONS FOR LIMITED-SERVICE CAMPAIGN 24TD04 DATA COMUNICATION MODULE (DCM) UPDATE CERTAIN 2020 - 2023 SUPRA

full bulletin at NHTSA ↗
Service Campaign 24TD04 Jul 2024

Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.

full bulletin at NHTSA ↗
Service Campaign 24TD04 Jul 2024

Due to incorrect software in the Data Communication Module (DCM) in your vehicle, the DCM cannot connect to the 4G cellular service. Therefore, after the 3G cellular service was sunset, voice communication with service providers when using connected services like Emergency call and Roadside assistance, is not available.

full bulletin at NHTSA ↗

Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.

What owners are reporting 4 most recent

electrical · filed 07/24/2026

There is currently an ongoing recall for the GR Supra over the starter. I currently drive a 2020 and have had periodic starter malfunctions. This is when I go to start the car it states starter system malfunction then lets me still turn it on after clearing the error message. I have brought this up to my dealership and due to the intermittent nature of the issue they said they could not diagnose…

electrical · filed 03/08/2023

Rear hatch will not open electrically and/or from the interior manual release handle. If someone gets stuck in the trunk or a pet, won't be able to come out. I had items I bought and if they included battery or dangerous item, my safety would be at risk. There is no rear realse hatch button from the outside the car. NO other problems or accidents. Is there any additional weight mounted on the…

electrical · filed 03/06/2022

There was a beep and then my dashboard went completely blank (was just dark) so I couldn't see any information such as how many miles per hour I was driving or how much gas I had or my navigational information or what gear I was in. Then the dashboard came back on and it said there was reduced driver assitance (but did not say what was wrong). The dealer says my dashboard should not have gone…

electrical · filed 01/31/2025

The 2020 - 2025 Toyota Supra is manufactured by BMW and uses virtually all components supplied by BMW. The vehicle includes dual climate controls (driver / passenger) and the temperature of the air from the vents is controlled independently. It is known by BMW that the blend door or the actuator (motor) - which regulates how much cold versus hot air is mixed per the control setting - can break or…

Had electrical trouble with your 2020 Toyota Supra? File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.

Common questions

How serious is the electrical problem on the 2020 Toyota Supra?

It's a documented issue but not catastrophic. 4 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.

At what mileage does the electrical typically fail?

Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.

What does it cost to fix?

Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.

Are there any recalls related to electrical?

Yes — 1 active recall(s) cover electrical issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.

Related

Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA) public records database. Verify the raw federal record at nhtsa.gov/vehicle/2020/Toyota/Supra. Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are independent-shop national averages and may differ in your area. Some links on this page are affiliate links.
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