Dodge Traffic Sign Assist Unavailable – Service Required
Traffic Sign Assist Unavailable – Service Required
Quick answer
For applicable 2024–2026 Dodge Charger vehicles in the US, this alert is documented in an official Dodge information-only service bulletin as a radio-software issue. The bulletin says the message can appear in the instrument panel cluster (IPC) and cause the odometer to flash, commonly after a remote start.
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 Traffic Sign Assist Unavailable – Service Required mean?
For applicable 2024–2026 Dodge Charger vehicles in the US, this alert is documented in an official Dodge information-only service bulletin as a radio-software issue. The bulletin says the message can appear in the instrument panel cluster (IPC) and cause the odometer to flash, commonly after a remote start.
2. Technical explanation
Verified evidence identifies radio software as the cause described by NHTSA Manufacturer Communication 11031224 (Dodge bulletin 08-143-26). The communication concerns the message “Traffic Sign Assist Unavailable – Service Required.” It states that the message may appear on the IPC and that the odometer may flash while the message is active. The supplied evidence does not establish further diagnostic steps, a software version, or a specific repair procedure.
3. What system is affected?
Traffic Sign Assist / radio software, with message display in the instrument panel cluster (IPC).
4. How serious is this code?
Unknown. The supplied verified evidence does not assign a severity level.
5. Symptoms you may notice
- “Traffic Sign Assist Unavailable – Service Required” appears in the IPC.
- The odometer flashes while the message is active.
- Customers may notice the condition after a remote start.
6. Possible causes
- Radio software, as stated in NHTSA Manufacturer Communication 11031224 / Dodge bulletin 08-143-26.
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 Dodge service evaluation if the message persists or recurs.
- Record whether the message appeared after a remote start and whether the odometer flashed; these are conditions documented in the bulletin.
10. Step-by-step troubleshooting
- No owner troubleshooting procedure is established by the supplied verified evidence.
11. When to contact service
Contact an authorized Dodge service center and reference NHTSA Manufacturer Communication 11031224, Dodge bulletin 08-143-26.
12. What the service center may check
- Confirm the displayed message and whether the odometer flashes while it is active.
- Document whether the condition occurred after a remote start.
- Assess the radio software condition, consistent with the cause stated in the bulletin.
13. Possible repair or resolution
- The supplied evidence identifies this as an information-only bulletin. A specific repair resolution is not established by the supplied evidence.
14. Affected vehicles
- Dodge Charger · 2024–2026 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 11031224: Dodge bulletin 08-143-26, published April 3, 2026. It is an information-only bulletin concerning a radio-software issue that can cause the Traffic Sign Assist message and flashing odometer condition.
16. Recall information
- No recall is established by the supplied verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication 11031224, Dodge bulletin 08-143-26: https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11031224
- NHTSA: NHTSA Manufacturer Communication 11031224: 08-143-26 · official_tsb
19. Frequently asked questions
What does “Traffic Sign Assist Unavailable – Service Required” mean on an applicable Dodge Charger?
The supplied official bulletin identifies a radio-software issue associated with this message. It does not provide a broader functional definition of the alert.
What other symptom is documented with this alert?
The official bulletin states that the odometer can flash while the message is active.
Can this happen after remote start?
Yes. The bulletin states that customers may notice the documented symptoms after a remote start.
Is this a recall?
No recall is established by the supplied verified evidence. The provided document is an information-only service bulletin.
Which vehicles are supported by the supplied applicability evidence?
Dodge Charger vehicles for model years 2024 through 2026 in the US.