Investigations
Loss of steering control
NHTSA Engineering Analysis EA24001 - closed, opened 2024-02-01 and involving the TESLA MODEL 3.
Among 871 NHTSA Engineering Analysis files in PlainCars' ODI extract, this record (EA24001) is one published case in that type class , and one of 19 investigation files attributed to TESLA.
NHTSA investigation EA24001 is a Engineering Analysis opened on 2024-02-01 and currently closed. The subject of record is TESLA MODEL 3, which places this file inside the Office of Defects Investigation queue for TESLA. Latest activity on this investigation was logged on 2026-06-25 - NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
An Engineering Analysis like EA24001 is the deeper technical phase that follows a PE. NHTSA requests design, warranty, and field-failure data from the manufacturer, conducts its own testing when needed, and determines whether the evidence supports a safety defect finding that would compel a recall.
Investigators summarized the matter as follows: "On July 28, 2023, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE23014) to investigate instances of loss of electronic power-assisted steering in MY 2023 Tesla Model 3 and MY 2023 Tesla Mode..." Investigations are the early-warning layer of the federal auto-safety system, sitting upstream of formal recalls and defect orders. Whether this one closes without action or escalates into an Engineering Analysis, the full history stays in the ODI archive so researchers, litigators, and buyers can pull the paper trail at any time. Related TESLA files, listed below, give context on whether this is an isolated concern or part of a broader pattern across the brand.
Investigation Summary
On July 28, 2023, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE23014) to investigate instances of loss of electronic power-assisted steering in MY 2023 Tesla Model 3 and MY 2023 Tesla Model Y vehicles manufactured by Tesla, Inc. The complaints allege a sudden and unexpected inability to turn the steering wheel or an increase in effort required to turn the steering wheel. These conditions were alleged to occur both during the drive cycle, at various speeds, and at vehicle start up. Consumers reported receiving the warning message “Steering assist reduced” either before, during, or after the loss of steering control, and some consumers described their steering begin to feel “notchy” or “clicky” either prior to or just after the incident. On February 1, 2024, PE23014 was upgraded to EA24001 to further investigate the alleged defect in the affected vehicles. Tesla identified the cause of the increase in steering effort as an overvoltage breakdown (the voltage applied exceeds the maximum design limit), which can overstress motor drive components on the printed circuit board of the vehicle’s steering Electronic Control Unit (ECU). If the primary motor drive components experienced an overvoltage breakdown occurrence while the vehicle was traveling above 0 mph, electronic power-assisted steering would be diverted to secondary motor drive components. The secondary, or backup, motor drive components would maintain electronic power-assisted steering until the vehicle reached 0 mph. If the vehicle was operating on the secondary system and reached 0 mph, the driver would lose electronic power-assisted steering with manual steering remaining available. Only manual steering would remain until the vehicle’s steering ECU is replaced. On February 19, 2025, Tesla filed safety recall 25V092 to address the loss of electronic power-assisted steering. The recall filing documents state that a steering ECU software update, identified as 2023.38.4, was introdu
About This Investigation Type
An Engineering Analysis (EA) is the in-depth phase following a Preliminary Evaluation. NHTSA engineers conduct testing, collect data from manufacturers, and perform detailed technical analysis to determine whether a safety defect exists. An EA may lead to a voluntary recall by the manufacturer or, in rare cases, a mandatory recall order.
Other TESLA Investigations
Emergency egress controls are not readily accessible and clearly identifiable.
Traffic safety violations while Full Self Driving ("FSD") is engaged
Electronic door handles become inoperative
Compliance with Standing General Order 2021-01 Reporting Requirements
Recall 23V838 Remedy Effectiveness
Data from NHTSA Office of Defects Investigation. Cross-references: NHTSA recall campaign API and NHTSA FARS where fatality records overlap. PlainCars does not rate or recommend vehicles. about how PlainCars sources NHTSA data.
Read our methodology - how this data is sourced, computed, and verified.