Recall 15V138 affects 3,039 2015 Mercedes-Benz C400 and C300 vehicles for fuel-module attachment and wiring defects. Repair is free at any franchised Mercedes-Benz dealer.
Mercedes-Benz is recalling 3,039 2015 C400 and C300 vehicles because the fuel delivery module can be improperly secured and the connecting wires can be pinched at the tank. A loose module can leak fuel and raise fire risk, while pinched wires can stop the fuel pump and stall the vehicle; Mercedes-Benz dealers will complete the recall repair free of charge.
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What's wrong?
The fuel delivery module in the 2015 Mercedes-Benz C400 and C300 is the fuel tank assembly that supplies gasoline from the tank to the engine and reports fuel level to the gauge. It sits at the tank opening, where a flange and locking plate hold it sealed and secured. The module has electrical wiring for the sending unit, which is the part that tells the fuel gauge how much fuel is in the tank.
On these vehicles, the tank was opened during post-production fuel system rework, then closed again through the service opening. During that closing and resealing work, the steel bayonet-type locking plate was not properly secured on some vehicles. In other vehicles, wires for the fuel delivery module were pinched between the module flange and the tank. That leaves the module attachment compromised and damages the wire insulation.
The warning sign listed for this recall is a fuel gauge issue. If the gauge reads incorrectly or behaves abnormally, treat that as a possible sign that the fuel sending unit or its wiring has been damaged.
Who's affected?
The C400 and C300 scopes share the same fuel-pump component.
| 2015 Mercedes-Benz C400 | fuel system |
|---|---|
| 2015 Mercedes-Benz C300 | fuel system |
| Units affected | 3,039 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific sedan is included.
What's the safety risk?
A loose locking plate can leak fuel and increase fire risk. Pinched electrical wires can stop the fuel pump; a stall raises crash risk. A fuel gauge issue is the warning sign listed for this recall. Schedule the inspection soon and drive cautiously until the dealer completes it. Repair is free at any franchised Mercedes-Benz dealer.
What should I do?
- Check your VIN to confirm your 2015 Mercedes-Benz C400 or C300 is included in this recall.
- Contact a franchised Mercedes-Benz dealer to schedule the free fuel-delivery-module inspection and wiring correction that addresses the fuel leak and stall risk.
- Bring the recall notice if Mercedes-Benz sent one. If not, reference recall number 15V138 when you call.
- Drive cautiously until the inspection is complete, and contact the dealer promptly if the vehicle stalls or you see fuel leaking.
What happens at the repair
At the dealer, a Mercedes-Benz technician inspects the fuel delivery module area for locking plates that were not secured correctly and wires pinched between the module flange and the fuel tank. The technician corrects the vehicle as needed, free under the recall. Out-of-pocket repairs already paid are handled through the new vehicle warranty, not through a separate reimbursement program. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| March 10, 2015 | NHTSA published the recall |
|---|---|
| April 24, 2015 | Owner notification mailed |
Frequently asked questions
What is recall 15V138?
Recall 15V138 covers 3,039 2015 Mercedes-Benz C400 and C300 vehicles with a fuel delivery module that was improperly secured or wiring that was pinched at the fuel tank. Mercedes-Benz dealers inspect and correct the locking plate or wiring for free.
What should I do if my 2015 Mercedes-Benz C400 or C300 is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 15V138. If it is, contact a franchised Mercedes-Benz dealer and ask for the fuel delivery module inspection and correction under recall 2015030004. The dealer repair is free.
Is the recall repair free?
Yes. Mercedes-Benz's recall remedy says dealers will inspect the vehicle for an improperly secured locking plate and pinched wires, then correct the vehicle as necessary free of charge. Use recall 15V138 or Mercedes-Benz recall number 2015030004 when you call.
What is the safety risk?
A loose locking plate can leak fuel and raise fire risk. Pinched wiring at the fuel delivery module can stop the fuel pump, causing a stall and raising crash risk. If your VIN is included, have a Mercedes-Benz dealer complete the free inspection and correction.
What if I bought this Mercedes-Benz C300 or C400 used?
The free recall repair still applies. Recall eligibility follows the VIN, not the original owner. Check your VIN, then contact a franchised Mercedes-Benz dealer with recall 15V138 or Mercedes-Benz recall number 2015030004 if your vehicle is included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/15V138000 |
|---|---|
| Mercedes-Benz customer service | 1-800-367-6372 |
| NHTSA recall # | 15V138 |
| NHTSA recall # (full) | 15V138000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 1, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →