Mercedes-Benz U05B6E1
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
Quick answer
For applicable 2024–2025 Mercedes-Benz EQS vehicles in the US, DTC U05B6E1 may be present after a software update when the short-range radar sensor calibration drive has not been completed. Mercedes-Benz’s referenced procedure is LI54.71-P-078377.
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1. What does U05B6E1 mean?
For applicable 2024–2025 Mercedes-Benz EQS vehicles in the US, DTC U05B6E1 may be present after a software update when the short-range radar sensor calibration drive has not been completed. Mercedes-Benz’s referenced procedure is LI54.71-P-078377.
2. Technical explanation
NHTSA Manufacturer Communication PDF 11019812 (Mercedes-Benz NCU - 2025050010, published June 6, 2025) states that U05B6E1, along with U05B7E1, U05B8E1, and U05B5E1, may be stored after a software update because the calibration drive was not completed. The communication directs technicians to perform the short-range radar sensor calibration drive described in LI54.71-P-078377 to clear the DTCs. If programming or coding is unsuccessful, it directs technicians to observe SI54.21-P-0067S.
3. What system is affected?
Driver assistance system / short-range radar sensor calibration, based on the referenced Mercedes-Benz service communication.
4. How serious is this code?
Unknown. The supplied verified evidence does not assign a severity level.
5. Symptoms you may notice
- U05B6E1 may be present after a software update when the calibration drive has not been completed.
- Other vehicle symptoms are not yet established by verified evidence.
6. Possible causes
- Following a software update, the 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 service with a Mercedes-Benz retailer or qualified service facility.
- Do not attempt control-unit programming, coding, or radar calibration without the specified Mercedes-Benz diagnostic procedures.
10. Step-by-step troubleshooting
- A technician should confirm whether the DTC was stored following a software update.
- A technician should perform the short-range radar sensor calibration drive according to LI54.71-P-078377.
- If programming or coding was unsuccessful, the Mercedes-Benz communication directs the technician to SI54.21-P-0067S.
11. When to contact service
Service is appropriate because the documented resolution involves Mercedes-Benz diagnostic software, programming/coding status, and a specified radar calibration drive.
12. What the service center may check
- Check for completed and successful programming and coding of all relevant control units.
- Check whether U05B6E1 is present after the software update.
- Perform the short-range radar sensor calibration drive specified in LI54.71-P-078377.
- If one or more programming or coding operations were unsuccessful, follow SI54.21-P-0067S.
13. Possible repair or resolution
- Complete the applicable control-unit software update and ensure programming and coding are successful.
- Perform the short-range radar sensor calibration drive per LI54.71-P-078377 to clear U05B6E1 when it is present because the calibration drive was not completed.
- The supplied evidence does not establish additional repair steps.
14. Affected vehicles
- Mercedes-Benz EQS · 2024–2025 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication PDF 11019812: Mercedes-Benz NCU - 2025050010; published June 6, 2025. It identifies U05B6E1 as a DTC that may be present after software updating when the calibration drive has not been completed and references LI54.71-P-078377 and SI54.21-P-0067S.
16. Recall information
- No recall information was supplied or established by the verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication PDF 11019812, Mercedes-Benz NCU - 2025050010, published June 6, 2025: https://static.nhtsa.gov/odi/tsbs/2025/MC-11019812-0001.pdf
19. Frequently asked questions
What does U05B6E1 mean on an applicable Mercedes-Benz EQS?
The supplied Mercedes-Benz communication states that U05B6E1 may be present after a software update because the short-range radar sensor calibration drive was not completed.
How is U05B6E1 cleared?
The communication directs technicians to perform the short-range radar sensor calibration drive outlined in LI54.71-P-078377.
Does U05B6E1 mean a component has failed?
Not yet established by verified evidence. The supplied communication specifically describes the code as potentially present after an incomplete calibration drive following a software update.
Which vehicles are covered by the supplied applicability data?
Mercedes-Benz EQS, model years 2024–2025, US region.