NHTSA service bulletin

NHTSA Service Bulletin 10207201: 2018-2021 Mercedes-benz Glc 350 E

Official manufacturer communication context for 2018-2021 Mercedes-benz Glc 350 E, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.

NHTSA service bulletin 10207201 summary graphic for 2018-2021 Mercedes-benz Glc 350 E
10207201NHTSA 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 Insufficient cooling capacity and/or noises from refrigerant compressor Cause Under analysis Remedy In order to detect the fault, please perform the following test steps: 1. Connect manometer of air conditioning service unit in order to read off high pressure and low pressure 2. Connect XENTRY and bring up all climate control actual values in air conditioning menu under "actual values" 3. Set blower to speed 7 4. Set temperature on both sides (driver and front passenger) to LOW 5. Activate AC ON Result 1: Only a small pressure ratio is established (e.g high pressure 7-8 bar; low pressure 5-6 bar). Continue with step (A) Result 2: A larger pressure ratio is established (e.g high pressure 12-16 bar; low pressure 0-2 bar). Continue with step (B) (A): Check the dryer package for black oil and particles. (A.1) Black oil and particles present: Replace refrigerant compressor and valves, flush refrigerant circuit according to instructions in WIS (Refrigerant-only flushing method). Then put system into operation. If the high pressure and low pressure values are OK and the system functions as intended, the vehicle can be returned to the customer. If the pressure ratio is still not correct, continue with step (C) (A.2) No black oil or particles present: continue with step (B) (B): Disconnect vehicle-side power supply for shutoff valve Y19/3 and externally power shutoff valve Y19/3 with 12 V. With the blower setting still set to speed 7, allow the air conditioning system to run. Measure the low pressure while this occurs.

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 E2018, 2020, 2021Ask for service records and run the exact VIN before purchase.
Mercedes-benzGlc350e2019Ask 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 10207201?

Complaint Insufficient cooling capacity and/or noises from refrigerant compressor Cause Under analysis Remedy In order to detect the fault, please perform the following test steps: 1. Connect manometer of air conditioning service unit in order to read off high pressure and low pressure 2. Connect XENTRY and bring up all climate control actual values in air conditioning menu under "actual values" 3. Set blower to.

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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