NHTSA service bulletin

NHTSA Service Bulletin 11026828: 2024-2026 Mercedes-benz Glc 350 E 4matic

Official manufacturer communication context for 2024-2026 Mercedes-benz Glc 350 E 4matic, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 11026828 summary graphic for 2024-2026 Mercedes-benz Glc 350 E 4matic
11026828NHTSA document ID
Manufacturer communicationcommunication type
3affected product rows
3source rows grouped

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 Warning message "Performance limited" in the instrument cluster and vehicle has lack of acceleration. Cause - A too high Temp difference between M43/1 Pump Temp Sensor and Temp Sensor in Power Electronics. DTC P0A9300 is detected by too low flow rate in the low temperature circuit of the power electronics N147. - Possible Restriction in the low Temp coolant circuit NT1. The difference between the temperature sensors in the pump from low temperature circuit and in the power electronics are to big. If the difference is too big, DTC P0A9300 will be set in the power electronics. Remedy If DTC P0A9300 is present in N147: Follow the guided test step for DTC P0A9300 in power electronics N147 Ensure that all HV safety guidelines are being followed as per WIS and that the vehicle is powered down. Replace Cooler low temperature LT1 (from cooling circuit of power electronics) Replace oil cooler (which is mounted on the drive unit) Replace the complete cooling fluid (G40) from all cooling circuits If DTC P0A9300 is not present in N147: upload HV CUL (N147 CUL) to paperless Open TIPS case and attach QT, HV CUL to the case

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-benzGlc 350 E 4matic2025, 2026Ask for service records and run the exact VIN before purchase.
Mercedes-benzGle 450 E2024Ask for service records and run the exact VIN before purchase.
Mercedes-benzGle 450e 4matic2025Ask 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 11026828?

Complaint Warning message "Performance limited" in the instrument cluster and vehicle has lack of acceleration. Cause - A too high Temp difference between M43/1 Pump Temp Sensor and Temp Sensor in Power Electronics. DTC P0A9300 is detected by too low flow rate in the low temperature circuit of the power electronics N147. - Possible Restriction in the low Temp coolant circuit NT1. The difference between the.

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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