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Tesla APP_w221

Cruise control unavailable Reduced front radar visibility

Common search variants: APPw221 · APP-w221 · APP w221 · Search ignores case and common separators.

DriveYes. Verified manufacturer communications state: “Your vehicle is OK to drive in the meantime.” Drive without relying on unavailable Traffic-Aware Cruise Control or Autosteer.
ChargeNot yet established by verified evidence.
ServiceSchedule Tesla service at your convenience if Autosteer is unavailable during the next drive and remains unavailable throughout subsequent drives.
Confidence95%

Quick answer

Tesla alert APP_w221 means Traffic-Aware Cruise Control and Autosteer are unavailable because the front-bumper radar has no or low visibility. Verified examples of a temporary obstruction include snow, ice, dirt, or mud.

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

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1. What does APP_w221 mean?

Tesla alert APP_w221 means Traffic-Aware Cruise Control and Autosteer are unavailable because the front-bumper radar has no or low visibility. Verified examples of a temporary obstruction include snow, ice, dirt, or mud.

2. Technical explanation

The verified manufacturer communication describes APP_w221 as “Cruise control unavailable Reduced front radar visibility.” It states that Traffic-Aware Cruise Control and Autosteer are unavailable when the radar in the front bumper area has no or low visibility. The evidence identifies snow, ice, dirt, or mud as possible temporary obstructions.

3. What system is affected?

Front-bumper radar visibility; Traffic-Aware Cruise Control and Autosteer availability.

4. How serious is this code?

The diagnostic record lists severity as unknown. However, the manufacturer communication states the vehicle is OK to drive in the meantime.

5. Symptoms you may notice

  • The APP_w221 alert is displayed.
  • Traffic-Aware Cruise Control is unavailable.
  • Autosteer is unavailable.

6. Possible causes

  • The front-bumper radar has no or low visibility.
  • A temporary obstruction such as snow, ice, dirt, or mud may be affecting radar visibility.

7. Can I still drive the vehicle?

Yes. Verified manufacturer communications state: “Your vehicle is OK to drive in the meantime.” Drive without relying on unavailable Traffic-Aware Cruise Control or Autosteer.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Continue driving without Traffic-Aware Cruise Control or Autosteer while the alert is present.
  • Follow the manufacturer guidance to continue to your destination and allow the condition to be reassessed on a subsequent drive.
  • Schedule service at your convenience if Autosteer is unavailable on the next drive and remains unavailable throughout subsequent drives.

10. Step-by-step troubleshooting

  1. The verified evidence identifies snow, ice, dirt, and mud as examples of temporary front-radar obstructions. It does not establish a specific user-performed cleaning or repair procedure.
  2. Check whether the alert and Autosteer unavailability persist on the next drive and throughout subsequent drives, as specified in the manufacturer communication.

11. When to contact service

Schedule Tesla service at your convenience if Autosteer is unavailable during the next drive and remains unavailable throughout subsequent drives.

12. What the service center may check

  • Not yet established by verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence. The documented condition may be temporary when front-radar visibility is reduced by snow, ice, dirt, or mud.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communications document APP_w221, including MC-10250484 (published 2023-12-01) and MC-10253658 (published 2024-03-26). The supplied communications are official NHTSA-hosted manufacturer documentation and state that the vehicle is OK to drive in the meantime.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted manufacturer communication: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf

19. Frequently asked questions

What does Tesla APP_w221 mean?

It means Traffic-Aware Cruise Control and Autosteer are unavailable because the radar located in the front bumper area has no or low visibility.

Can I drive with APP_w221?

Yes. The verified manufacturer communication says the vehicle is OK to drive in the meantime.

What can cause reduced front radar visibility?

The verified communication gives snow, ice, dirt, and mud as examples of temporary obstructions.

When should I schedule service?

Schedule service at your convenience if Autosteer is unavailable during the next drive and remains unavailable throughout subsequent drives.

Does APP_w221 affect charging?

Not yet established by verified evidence.

20. Sources & verification

Verified
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Tesla APP_w221: Cruise control unavailable Reduced front radar… | EV Diagnostics