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Mercedes-Benz U05B5E1

range radar sensor calibration drive as outlined in LI54.71-P-078377. If one or more unsuccessful programming or coding operation occurs – observe SI54.21-P-0067S. 3. Disconnect XE

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Mercedes-Benz service provider, particularly if U05B5E1 appeared after a DRIVE PILOT software update or if programming/coding did not complete successfully.
Confidence95%

Quick answer

For 2024–2025 Mercedes-Benz EQS vehicles in the US, DTC U05B5E1 may be present after a DRIVE PILOT software update when the required short-range radar sensor calibration drive has not been completed. The cited Mercedes-Benz/NHTSA communication directs service personnel to perform the calibration drive in LI54.71-P-078377 to clear the DTC.

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 U05B5E1 mean?

For 2024–2025 Mercedes-Benz EQS vehicles in the US, DTC U05B5E1 may be present after a DRIVE PILOT software update when the required short-range radar sensor calibration drive has not been completed. The cited Mercedes-Benz/NHTSA communication directs service personnel to perform the calibration drive in LI54.71-P-078377 to clear the DTC.

2. Technical explanation

Verified evidence identifies U05B5E1 as one of several fault codes that may remain after a software update because a calibration drive was not completed. The manufacturer communication states that the short-range radar sensor calibration drive outlined in LI54.71-P-078377 is required to clear the DTC. If programming or coding is unsuccessful, the communication directs technicians to SI54.21-P-0067S.

3. What system is affected?

Driver assistance system / short-range radar sensor calibration, based on the referenced calibration-drive instruction.

4. How serious is this code?

Unknown. The supplied verified evidence does not assign a severity level.

5. Symptoms you may notice

  • U05B5E1 may be stored after a DRIVE PILOT software update when the calibration drive has not been completed.
  • Other listed codes that may be present in the same situation are U05B7E1, U05B8E1, and U05B6E1.

6. Possible causes

  • Following a software update, the required short-range radar sensor calibration drive was not completed.
  • Other causes are not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Arrange diagnosis and completion of the required calibration procedure by an authorized Mercedes-Benz service provider.
  • Do not attempt software programming, coding, or radar calibration without the manufacturer-required diagnostic process.

10. Step-by-step troubleshooting

  1. A service technician can use XENTRY Diagnosis and follow its user guidance for the control-unit software update process described in the manufacturer communication.
  2. The communication states that the update is complete only after all control units have been programmed and coded successfully.
  3. If U05B5E1 remains after the update, the technician should perform the short-range radar sensor calibration drive specified in LI54.71-P-078377.
  4. If one or more programming or coding operations are unsuccessful, the communication directs technicians to SI54.21-P-0067S.

11. When to contact service

Contact an authorized Mercedes-Benz service provider, particularly if U05B5E1 appeared after a DRIVE PILOT software update or if programming/coding did not complete successfully.

12. What the service center may check

  • Confirm whether the vehicle received the referenced DRIVE PILOT software update.
  • Check whether all control units were programmed and coded successfully.
  • Check whether the short-range radar sensor calibration drive was completed.
  • Follow LI54.71-P-078377 for the calibration drive.
  • If programming or coding failed, follow SI54.21-P-0067S.

13. Possible repair or resolution

  • Complete the short-range radar sensor calibration drive as outlined in LI54.71-P-078377 to clear U05B5E1 when it is present after the referenced software update.
  • Address unsuccessful programming or coding operations using SI54.21-P-0067S.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 11019812: NCU - 2025050010, published June 6, 2025. It describes a DRIVE PILOT software update and notes that U05B5E1 may remain if the calibration drive is not completed.
  • Source: https://static.nhtsa.gov/odi/tsbs/2025/MC-11019812-0001.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official evidence: NHTSA Manufacturer Communication PDF 11019812: NCU - 2025050010 (Mercedes-Benz), published June 6, 2025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11019812-0001.pdf

19. Frequently asked questions

What does U05B5E1 indicate in the supplied Mercedes-Benz evidence?

It may be present after the referenced DRIVE PILOT software update because the required short-range radar sensor calibration drive was not completed.

How does the manufacturer communication say to clear U05B5E1?

Perform the short-range radar sensor calibration drive outlined in LI54.71-P-078377.

Which vehicles are covered by the supplied applicability evidence?

Mercedes-Benz EQS model-year 2024–2025 vehicles in the United States.

Can I drive or charge with U05B5E1?

Not yet established by verified evidence.

20. Sources & verification

Verified
Mercedes-Benz U05B5E1: range radar sensor calibration drive as… | EV Diagnostics