NHTSA service bulletin

NHTSA Service Bulletin 11030288: 2026 Mercedes-benz Cla 250+ (EV)

Official manufacturer communication context for 2026 Mercedes-benz Cla 250+ (EV), with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11030288 summary graphic for 2026 Mercedes-benz Cla 250+ (EV)
11030288NHTSA document ID
Manufacturer communicationcommunication type
2affected product rows
90/100quality score

Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.

Quick answer

Complaint After a seamless update to ARTEMIS Release E216.4 (A 174 902 6104), there is no longer a backend connection between the MMC App and the vehicle. The following complaints are possible: Vehicle remote control is not functional (unlocking/locking the vehicle via the Mercedes-Benz app). The vehicle status data within the Mercedes-Benz app is outdated and does not update. Digital Extra services cannot be activated/deactivated. A yellow message "Vehicle connection restricted" permanently appears in the Mercedes-Benz App. Cause A bug in the software update process can cause the ARTEMIS module to be unable to register with the backend after updating to software E216.4. Remedy Always use the latest XENTRY Diagnosis software version with all available AddOns. Required AddOns: AddOn 33166 for XD 12/25 or AddOn 33165 for XD 03/26 must be installed. Do not use XENTRY DVD 09/25 Then, perform a Seamless Update. XENTRY -> Overview -> Control Units List -> Software Update This will recode the ARTEMIS control unit A2/93 and resolve the error. If the complaint persists, please open a TIPS case to the Body/Chassis/Entertainment inbox with a current ARTEMIS control unit log file.

What this bulletin may mean before buying

Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.

Affected products listed in this communication

MakeModelModel yearsBuyer note
Mercedes-benzCla 250+ (EV)2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzCla 350 4matic (EV)2026Ask for service records and run the exact VIN before purchase.

Buyer checklist

  1. Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
  2. Check recall campaign pages for safety actions that may require dealer repair.
  3. Compare this bulletin with common problem pages for the same model and component area.
  4. Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
  5. Use the used-car buying checklist and get an independent inspection.

Frequently asked questions

What is NHTSA service bulletin 11030288?

Complaint After a seamless update to ARTEMIS Release E216.4 (A 174 902 6104), there is no longer a backend connection between the MMC App and the vehicle. The following complaints are possible: Vehicle remote control is not functional (unlocking/locking the vehicle via the Mercedes-Benz app). The vehicle status data within the Mercedes-Benz app is outdated and does not update. Digital Extra services cannot be.

Is a service bulletin the same as a recall?

No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.

How should a used-car buyer use this bulletin?

Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.

Check the exact VIN before you buy

Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.

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