Vehicle fails to restart after automatic ignition shut off when pressure is removed from brake pedal causing vehicle to shift into neutral without engine power. Vehicle also fails to start showing "starter system fault" error.
2021 toyota Supra electrical problems
moderate 7 complaints filed with NHTSA · avg repair $850
Complaints
7
Recalls
0
Crashes
0
Avg fix
$850
What owners are reporting 7 most recent
Passenger side low beam headlight suddenly stopped working on the highway. Symptoms same as Toyota recall 19TA20, however vehicle is not part of the recall campaign. Vehicle displayed error "Right low beam malfunction". Dealership is not willing to investigate under recall coverage.
I own a new 2021 Toyota Supra and along with other owners of this new model, there is a safety issue that has been identified. There is a repeating issue with unresponsive/unpredictable throttle behavior for me and other Toyota Supra owners. It only happens on a cold start, when going in reverse on a slope (exiting the garage) and when traction control gets engaged (the wheel gets in the air for …
Odometer Fraud. The contact purchased a 2021 Toyota Supra. The contact stated that after obtaining the vehicle's Carfax history report, it was discovered that there was a mileage discrepancy. The vehicle was a private dealer sale. At the time of purchase, the vehicle mileage was 47,764, and after receiving Carfax history report, it was discovered that the mileage was 72,650.
See attached document for complaint. Toyota Motor North America, Inc. has failed or is unable to remedy the safety recall (NHTSA Recall No. 25V-636), issued on 26 September 2025, for my 2021 Toyota Supra within a reasonable period of time. According to the non-dated letter from Toyota, the recall is for a defect in the engine starter relay that may catch fire without warning “during vehicle opera…
The contact owns a 2021 Toyota Supra. The contact received notification of NHTSA Campaign Number: 25V636000 (ELECTRICAL SYSTEM); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer …
The contact owns a 2021 Toyota Supra. The contact received notification of NHTSA Campaign Number: 25V636000 (Electrical System); however, the part to do the recall repair was not yet available. The dealer was contacted. The contact disconnected the battery after parking the vehicle outside to prevent the vehicle from catching on fire. Additionally, the contact expressed that he was making monthly …
Common questions
How serious is the electrical problem on the 2021 toyota Supra?
It's a documented issue but not catastrophic. 7 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?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. 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.
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