Mercedes-Benz U013187
• All driver assist functions operate without restrictions AND • There are no persistent driver assist cluster messages (Example: white message for "Drive
Quick answer
For a 2026 Mercedes-Benz CLA-Class in the US, U013187 is listed in Mercedes-Benz communication LI54.71-P-080314 as a known potentially erroneous DTC that can be generated during PDI, a diagnostic session, or a vehicle-software update. The supplied evidence says this may occur without restrictions in customer operation when driver-assistance functions operate normally and no persistent driver-assistance cluster messages are present.
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 U013187 mean?
For a 2026 Mercedes-Benz CLA-Class in the US, U013187 is listed in Mercedes-Benz communication LI54.71-P-080314 as a known potentially erroneous DTC that can be generated during PDI, a diagnostic session, or a vehicle-software update. The supplied evidence says this may occur without restrictions in customer operation when driver-assistance functions operate normally and no persistent driver-assistance cluster messages are present.
2. Technical explanation
Mercedes-Benz identifies the software status of IDC_GEN6 as the cause described in LI54.71-P-080314. The bulletin states that, in some cases, a diagnosis session or software update can generate fault codes that do not cause restrictions in customer operation. U013187 is specifically included in the bulletin’s list of known erroneous DTCs. The supplied bulletin excerpt is truncated after the beginning of the remedy criteria; therefore, the complete prescribed service procedure is not established by the verified evidence provided.
3. What system is affected?
Driver-assistance functions; the communication identifies IDC_GEN6 software status. A more specific subsystem definition is not yet established by verified evidence.
4. How serious is this code?
Unknown. The verified bulletin indicates U013187 can be non-impacting under the stated normal-operation conditions, but it does not establish severity for every occurrence.
5. Symptoms you may notice
- U013187 may be present as an active-and-stored or stored DTC during PDI or after a vehicle-software update.
- The bulletin’s non-impacting condition requires that all driver-assistance functions operate without restrictions and that there are no persistent driver-assistance cluster messages.
- Persistent driver-assistance cluster messages are referenced by the bulletin as relevant; the example message text is incomplete in the supplied evidence.
6. Possible causes
- IDC_GEN6 software status.
- A diagnosis session or vehicle-software update may generate U013187 without restrictions in customer operation in some cases.
7. Can I still drive the vehicle?
Not yet established by verified evidence for every occurrence. The bulletin indicates no customer-operation restriction in the specific condition where all driver-assistance functions operate without restrictions and no persistent driver-assistance cluster messages are present.
8. Can I charge the vehicle?
Not yet established by verified evidence.
9. What you can safely do
- Check whether all driver-assistance functions operate without restriction.
- Check for persistent driver-assistance messages in the instrument cluster.
- Record whether the DTC appeared during PDI, after a diagnostic session, or after a vehicle-software update.
- Have a Mercedes-Benz dealer or qualified service provider evaluate persistent messages or restricted driver-assistance functions.
10. Step-by-step troubleshooting
- Verify the DTC status, identified in the bulletin as either active-and-stored or stored.
- Confirm whether the vehicle recently underwent PDI, a diagnostic session, or a software update.
- Assess the bulletin’s stated conditions: unrestricted operation of all driver-assistance functions and no persistent driver-assistance cluster messages.
- Consult LI54.71-P-080314 for the complete manufacturer procedure; the supplied evidence does not include the full remedy text.
11. When to contact service
Contact Mercedes-Benz service if driver-assistance functions are restricted or if persistent driver-assistance cluster messages are present. The full service disposition is not included in the supplied evidence.
12. What the service center may check
- Check U013187 status in the diagnostic system.
- Check driver-assistance function operation.
- Check for persistent driver-assistance cluster messages.
- Review recent PDI, diagnostic-session, and vehicle-software-update history.
- Review IDC_GEN6 software status in accordance with Mercedes-Benz procedures.
13. Possible repair or resolution
- The verified evidence identifies a software-related source and describes circumstances in which the DTC may be erroneous.
- A specific repair, clearing procedure, programming action, or final resolution is not yet established by the supplied verified evidence.
14. Affected vehicles
- Mercedes-Benz CLA-Class · 2026 · US
15. Related TSBs / service bulletins
- Mercedes-Benz LI54.71-P-080314, reported by NHTSA as Manufacturer Communication 11030291, published March 25, 2026.
- Mercedes-Benz LI54.71-P-080314, reported by NHTSA as Manufacturer Communication 11031206, published April 4, 2026.
- Both supplied records describe U013187 as a known potentially erroneous DTC associated with IDC_GEN6 software status, including cases during PDI or following a diagnostic session or vehicle-software update.
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Official source: NHTSA Manufacturer Communication LI54.71-P-080314 (NHTSA IDs 11030291 and 11031206): https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2025-2026.zip#nhtsa_id=11030291
19. Frequently asked questions
What does U013187 mean on a 2026 Mercedes-Benz CLA-Class?
The supplied Mercedes-Benz bulletin lists U013187 among known potentially erroneous DTCs. It associates the condition with IDC_GEN6 software status and states that a diagnostic session or vehicle-software update can generate fault codes without customer-operation restrictions in some cases.
Can U013187 occur after a software update?
Yes. LI54.71-P-080314 states that, in some cases, a diagnosis session or software update may generate fault codes, and it includes U013187 in its list of known erroneous DTCs.
Is U013187 always a fault that affects driver assistance?
Not according to the supplied bulletin. It describes a condition in which the DTC may not cause customer-operation restrictions when all driver-assistance functions operate without restrictions and no persistent driver-assistance cluster messages are present. Its effect in other conditions is not established by the provided evidence.
Does U013187 affect charging?
Not yet established by verified evidence.