Mercedes-Benz Active Emergency Stop Assist Currently Unavailable
Active Emergency Stop Assist Currently Unavailable
Quick answer
For certain 2022–2025 Mercedes-Benz EQE and EQS vehicles in the US, this alert can occur when tire pressure is low and the tire-pressure warning light is active. The cited Mercedes-Benz service communication says the affected assistance systems are temporarily unavailable until tire pressures are corrected.
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 Active Emergency Stop Assist Currently Unavailable mean?
For certain 2022–2025 Mercedes-Benz EQE and EQS vehicles in the US, this alert can occur when tire pressure is low and the tire-pressure warning light is active. The cited Mercedes-Benz service communication says the affected assistance systems are temporarily unavailable until tire pressures are corrected.
2. Technical explanation
NHTSA-hosted Mercedes-Benz manufacturer communication LI54.71-P-078498 addresses the instrument-cluster message “Active Emergency Stop Assist Currently Unavailable,” including cases also showing “Active Steering Assist Inoperative” and a tire-pressure warning light. The communication identifies low tire pressures as the cause of temporary unavailability of these assistance systems. It states that an active tire-pressure monitor warning can result in some assistance features being temporarily unavailable until tire pressures are corrected.
3. What system is affected?
Active Emergency Stop Assist. The cited communication also references Active Steering Assist and the tire-pressure monitoring warning.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Instrument-cluster message: “Active Emergency Stop Assist Currently Unavailable.”
- The cited communication describes possible simultaneous display of “Active Steering Assist Inoperative.”
- A tire-pressure warning light may be illuminated in the instrument cluster.
6. Possible causes
- Low tire pressures.
- An active tire-pressure monitor warning causing some assistance features to be temporarily unavailable.
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
- Check for an illuminated tire-pressure warning light.
- Have tire pressures corrected using the vehicle’s applicable tire-pressure information and owner documentation.
- After tire pressures are corrected, verify whether the assistance-system messages clear or remain present.
10. Step-by-step troubleshooting
- The verified service communication links this alert, in the described condition, to low tire pressures and an active tire-pressure monitor warning.
- Correct tire pressures, then reassess the instrument-cluster warnings.
- If the warning remains after tire pressures are corrected, further cause or resolution is not yet established by verified evidence.
11. When to contact service
Contact an authorized Mercedes-Benz service provider if the message remains after tire pressures are corrected, or if a tire-pressure warning cannot be resolved.
12. What the service center may check
- Check whether the tire-pressure warning light is active.
- Check tire pressures in response to the active warning.
- Confirm whether the Active Emergency Stop Assist message resolves after tire pressures are corrected.
13. Possible repair or resolution
- Correct low tire pressures. The cited communication states the affected assistance features are temporarily unavailable until tire pressures are corrected.
14. Affected vehicles
- Mercedes-Benz EQE · 2022–2025 · US
- Mercedes-Benz EQS · 2022–2025 · US
15. Related TSBs / service bulletins
- Mercedes-Benz LI54.71-P-078498, reported through NHTSA Manufacturer Communication 11009036, published October 16, 2024. It addresses “Active Emergency Stop Assist Currently Unavailable” and “Active Steering Assist Inoperative” messages with a tire-pressure warning light, identifying low tire pressures as the cause of temporary system unavailability.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified official source: NHTSA Manufacturer Communication 11009036, Mercedes-Benz LI54.71-P-078498: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2020-2024.zip#nhtsa_id=11009036. Verified applicability: US-market 2022–2025 Mercedes-Benz EQE and EQS.
19. Frequently asked questions
What does “Active Emergency Stop Assist Currently Unavailable” mean on an EQE or EQS?
For the condition described in Mercedes-Benz communication LI54.71-P-078498, the feature is temporarily unavailable because of low tire pressures and an active tire-pressure monitor warning.
Can low tire pressure cause this warning?
Yes. The cited Mercedes-Benz communication identifies low tire pressures as the cause in the described cases.
Will correcting tire pressure restore the feature?
The communication states that some assistance features are temporarily unavailable until tire pressures are corrected.
Does this apply to every Mercedes-Benz vehicle?
Verified applicability is limited to US-market 2022–2025 Mercedes-Benz EQE and EQS vehicles.
Is it safe to drive or charge with this alert?
Not yet established by verified evidence.