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Mercedes-Benz Driving assistance system function limited

Driving assistance system function limited

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact an authorized Mercedes-Benz service provider for diagnosis and application of LI54.30-P-080760 where applicable.
Confidence90%

Quick answer

For certain 2026–2027 Mercedes-Benz CLA-Class vehicles in the US, the “Driving assistance system function limited” message may recur while driving. Mercedes-Benz communication LI54.30-P-080760 identifies a hardware malfunction involving one or more radar sensors when DTC U160E97 is stored.

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 Driving assistance system function limited mean?

For certain 2026–2027 Mercedes-Benz CLA-Class vehicles in the US, the “Driving assistance system function limited” message may recur while driving. Mercedes-Benz communication LI54.30-P-080760 identifies a hardware malfunction involving one or more radar sensors when DTC U160E97 is stored.

2. Technical explanation

The verified manufacturer communication concerns the instrument-cluster message “Driving assistance system function limited.” It states that the message can occur repeatedly while driving. The relevant fault code is U160E97; P161400 and/or C11009A may also be stored. Any radar sensor B29/21, B29/22, B29/23, or B29/24 can be an affected control unit. The communication identifies the cause as a hardware malfunction. Its supplied evidence excerpt applies when the DTC is present in a radar sensor and the vehicle production date is before May 12, 2026.

3. What system is affected?

Driving assistance system; radar sensor control units B29/21, B29/22, B29/23, and B29/24.

4. How serious is this code?

Unknown. Verified evidence does not assign a severity level.

5. Symptoms you may notice

  • Instrument-cluster message: “Driving assistance system function limited.”
  • The message can occur repeatedly while driving.

6. Possible causes

  • Hardware malfunction involving an affected radar sensor control unit, as identified in Mercedes-Benz communication LI54.30-P-080760 when U160E97 is present.

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 by an authorized Mercedes-Benz service provider if the message occurs repeatedly or relevant fault codes are stored.
  • Do not attempt radar-sensor or control-unit repair based on this information.

10. Step-by-step troubleshooting

  1. Have a service provider check whether U160E97 is stored in radar sensor B29/21, B29/22, B29/23, or B29/24.
  2. The provider may also check for P161400 and/or C11009A.
  3. Confirm the vehicle production date, because the supplied communication excerpt specifies vehicles produced before May 12, 2026 when the DTC is present.

11. When to contact service

Contact an authorized Mercedes-Benz service provider for diagnosis and application of LI54.30-P-080760 where applicable.

12. What the service center may check

  • Read fault memory in radar sensors B29/21, B29/22, B29/23, and B29/24.
  • Check for U160E97.
  • Check whether P161400 and/or C11009A are also stored.
  • Verify whether the vehicle was produced before May 12, 2026.

13. Possible repair or resolution

  • Mercedes-Benz communication LI54.30-P-080760 identifies a hardware malfunction and provides a remedy procedure, but the supplied verified evidence does not include the remedy details. Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Mercedes-Benz LI54.30-P-080760, reported through NHTSA Manufacturer Communication 11034188, published June 30, 2026. It addresses repeated display of “Driving assistance system function limited,” U160E97 in a radar sensor, and possible P161400 and/or C11009A.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

NHTSA Manufacturer Communication 11034188: LI54.30-P-080760. https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11034188

19. Frequently asked questions

Which vehicles are covered by the verified applicability data?

The supplied applicability data identifies US-market 2026–2027 Mercedes-Benz CLA-Class vehicles.

What fault code is associated with this message?

The communication identifies U160E97. It also states that P161400 and/or C11009A may be stored.

Which components may be involved?

The communication states that any of radar sensors B29/21, B29/22, B29/23, or B29/24 can be an affected control unit.

Can I continue driving or charge the vehicle?

Not yet established by verified evidence.

20. Sources & verification

Verified
Mercedes-Benz Driving assistance system function limited: Driving… | EV Diagnostics