EV Diagnostics
Verified EV diagnostic knowledge page

Tesla DIR_a251

Gearbox fluid service recommended Schedule Service

Common search variants: DIRa251 · DIR-a251 · DIR a251 · Search ignores case and common separators.

DriveYes. Verified Tesla owner-documentation excerpts state that the vehicle is OK to drive with this alert present. However, service is recommended, and extended driving with the alert present may result in vehicle damage.
ChargeNot yet established by verified evidence.
ServiceSchedule Tesla service at your earliest convenience for gearbox fluid inspection.
Confidence95%

Quick answer

DIR_a251 means the vehicle detected a condition requiring gearbox fluid inspection. Tesla documentation recommends scheduling service; the vehicle is OK to drive with this alert present, but it should not be ignored for an extended period.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

#Tesla Gearbox Fluid service is required #DIR_a251_oilPumpService #DIF_a251 Oil PumpDigital EV Doctor (Tesla alert clear)
#Tesla Gearbox Fluid Service required #DIF_a251_oilPumpService #DIR_a251 Easy fix from homeDigital EV Doctor (Tesla alert clear)
Tesla "Gearbox fluid service recommended" Alert Clear DIF_a251, DIR_a251_OilPumpServiceDigital EV Doctor (Tesla alert clear)

Videos are supporting material and never override OEM or regulator evidence.

1. What does DIR_a251 mean?

DIR_a251 means the vehicle detected a condition requiring gearbox fluid inspection. Tesla documentation recommends scheduling service; the vehicle is OK to drive with this alert present, but it should not be ignored for an extended period.

2. Technical explanation

The verified Tesla owner-documentation excerpts filed with NHTSA define DIR_a251 as “Gearbox fluid service recommended Schedule Service.” The alert indicates that the vehicle has detected a condition requiring gearbox fluid inspection. The supplied evidence does not establish the specific underlying fault, fluid condition, or component failure.

3. What system is affected?

Gearbox fluid inspection/service.

4. How serious is this code?

Service is recommended. Continuing to drive for an extended period with the alert present may result in vehicle damage, according to the verified owner-documentation excerpts.

5. Symptoms you may notice

  • Instrument-panel/service alert: “Gearbox fluid service recommended Schedule Service.”
  • The vehicle has detected a condition requiring gearbox fluid inspection.

6. Possible causes

  • A condition requiring gearbox fluid inspection has been detected.
  • The specific cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Yes. Verified Tesla owner-documentation excerpts state that the vehicle is OK to drive with this alert present. However, service is recommended, and extended driving with the alert present may result in vehicle damage.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Schedule Tesla service for gearbox fluid inspection.
  • Avoid disregarding the alert for an extended period.
  • Do not attempt gearbox-fluid or high-voltage-system repair unless performed by appropriately qualified service personnel.

10. Step-by-step troubleshooting

  1. Record the exact alert text and when it first appeared.
  2. Arrange service for the recommended gearbox fluid inspection.
  3. No owner-level diagnostic or repair procedure is established by the supplied verified evidence.

11. When to contact service

Schedule Tesla service at your earliest convenience for gearbox fluid inspection.

12. What the service center may check

  • Inspect the gearbox fluid condition, as indicated by the alert documentation.
  • Further diagnostic checks are not yet established by verified evidence.

13. Possible repair or resolution

  • The verified documentation recommends gearbox fluid inspection/service.
  • The exact repair or resolution after inspection is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication 10253666, published March 27, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf
  • NHTSA Manufacturer Communication 10253669, published March 27, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253669-9999.pdf
  • NHTSA Manufacturer Communication 10247843, published November 22, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10247843-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified NHTSA-hosted Tesla owner-documentation excerpts identify DIR_a251 as a gearbox-fluid inspection/service recommendation. Verified applicability is Tesla Model 3 (2017–2024), Model S (2012–2024), Model X (2016–2024), and Model Y (2020–2024), in the US; the supplied records include overlapping year ranges for several models.

19. Frequently asked questions

What does Tesla DIR_a251 mean?

It means “Gearbox fluid service recommended Schedule Service.” The vehicle detected a condition requiring gearbox fluid inspection.

Can I drive with DIR_a251?

Yes. The verified Tesla documentation says the vehicle is OK to drive with the alert present, but recommends scheduling service and warns that extended driving may result in vehicle damage.

Does DIR_a251 mean charging is unsafe?

Not yet established by verified evidence.

What repair will be needed?

The documentation establishes that gearbox fluid inspection/service is recommended. The exact repair is not yet established by verified evidence.

20. Sources & verification

Verified
Show all 44 verified sources
Tesla DIR_a251: Gearbox fluid service recommended Schedule Service | EV Diagnostics