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NHTSA ID Number: 11031588

Manufacturer Communication Number: EW-Fuel Filter Unit(PZEV)

TSB/Document Date: 2026-04-27


Summary

In our continuing efforts to assure the proper performance of Mercedes-BenzeBay logo products and to enhance the satisfaction of our customers, Mercedes-BenzeBay logo USA, LLC (“MBUSA”) is extending the warranty coverage on the fuel filter unit in certain Model Year (“MY”) vehicles certified as Partial Zero Emission Vehicles (PZEV) listed below from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 15 years/150,000 miles (whichever occurs first). This warranty extension includes the replacement of the PZEV fuel filter unit due to potential fuel seepage from the fuel filter flange that could result in fuel odor and/or an activation of the Malfunction Indicator Lamp (“MIL”). Note that due to the nature of the fuel seepage and the distance to hot components, a risk of fire can be ruled out. This extended limited warranty applies to all aforementioned conditions that necessitate the servicing and or replacement of the PZEV fuel filter unit under the standard warranty terms and conditions.


News Channel Update |

Warranty

TO: Mercedes-BenzeBay logo Dealer Principals, General Managers,

Sales Managers, Service Managers, Parts Managers

RE: Emission Extended Warranty – Fuel Filter Unit(PZEV)
MY10-11 C-Class (204), E-Class (207, 212), GLK (X204)

FROM: Joe Haller, Senior Manager – Warranty,

Gregory Gunther - Senior Manager, Vehicle
Compliance and Analysis, Engineering Services
DATE: October 20, 2023

IMPORTANT EXTENDED WARRANTY INFORMATION
In our continuing efforts to assure the proper performance of Mercedes-BenzeBay logo products and to enhance the satisfaction of our
customers, Mercedes-BenzeBay logo USA, LLC (“MBUSA”) is extending the warranty coverage on the fuel filter unit in certain Model
Year (“MY”) vehicles certified as Partial Zero Emission Vehicles (PZEV) listed below from the original New Vehicle Limited
Warranty of 4 years/50,000 miles to 15 years/150,000 miles (whichever occurs first).
This warranty extension includes the replacement of the PZEV fuel filter unit due to potential fuel seepage from the fuel filter
flange that could result in fuel odor and/or an activation of the Malfunction Indicator Lamp (“MIL”). Note that due to the
nature of the fuel seepage and the distance to hot components, a risk of fire can be ruled out.
This extended limited warranty applies to all aforementioned conditions that necessitate the servicing and or replacement of
the PZEV fuel filter unit under the standard warranty terms and conditions.
Model Model Years
C-Class

Sales Designation
C300, C300 4MATIC, C350 (Sedan)

E-Class

E350 (Sedan), E350 (Coupe)

2010 – 2011

GLK350, GLK350 4MATIC

GLK

Please be advised that repairs addressing a MIL being claimed under this extended warranty must have a Quick Test
uploaded with the following fault code information and may be audited.


P04567A - A leak or defective seal has been detected. (>0.5mm)
P045600 - A leak or defective seal has been detected. (> 0.5 mm)
P04427A - A fine leak in the fuel evaporation system was detected. (>1.0mm)

All fuel filter units (PZEV) found to be functioning properly or without proper documentation will be returned and the claim
debited in full. Only the following damage codes and parts may be claimed for the aforementioned repairs:
Damage Code:

47081– Fuel Filter Unit

Parts:

A221 470 17 90 – 28 Fuel Filter Unit

Mercedes-BenzeBay logo USA, LLC
One Mercedes-BenzeBay logo Drive

A Mercedes-BenzeBay logo AG Company

Sandy Springs, GA 30328

770.705.0600

News Channel Update |

Warranty

IMPORTANT:
1. Always check VMI to determine if a vehicle is covered under the 15 year/150,000 mile warranty period
2. Quick Test Documentation with fault code information must be uploaded to pXD.
Please check the VIN in NetStar/VMI before scheduling the appointment for the repair. Applicable vehicles will be visible in
NetStar/VMI on October 20, 2023
Approximately two week after the distribution of this NCU, a letter will be distributed to owners notifying them of the warranty
extension. If customers have already paid to have a repair related to the conditions specified above, they may be eligible for
reimbursement. Please advise the customer to follow the instructions detailed below (also included in a copy of the customer
letter).

Reimbursement to Customers for Valid Repairs Performed Prior to Warranty Extension
Customers who have already paid to have a repair to Fuel Filter Unit, resulting in fuel odor and/or an activation of the check
engine Malfunction Indicator Lamp (“MIL”) may be eligible to receive reimbursement.
Requests for reimbursement may include expenses for Mercedes-BenzeBay logo replacement parts, labor, fees and taxes. Requests
for reimbursement costs that were not related to the aforementioned conditions will not be honored.
Reimbursement may be limited to the amount the repair would have cost if completed by an authorized MercedesBenz dealership and repairs performed by a non-Mercedes-BenzeBay logo dealership might not be reimbursed.
The following documentation must be presented to the servicing or closest Mercedes-BenzeBay logo dealership for
reimbursement.
Original or clear copy of all receipts, invoices and/or repair orders that show:
• The name and address of the person who paid for the repair.
• The Vehicle Identification Number (VIN) of the vehicle that was repaired.
• What problem occurred, what repair was done, when it was done and who repaired it.
• Only Mercedes-BenzeBay logo replacement parts were used for the repair.
• Fault Code (DTCs) information belonging to this Warranty Extension (if any).
• The total cost of the repair expense that is being claimed.
• Proof of payment for the repair (copy of front and back of cancelled check, or copy of credit card receipt).
• Reimbursement will be paid by a check from an authorized Mercedes-BenzeBay logo dealership, which may take up to
60 days.
Should you have any questions or concerns, please do not hesitate to open a OneTRAC case online.

Mercedes-BenzeBay logo USA, LLC
One Mercedes-BenzeBay logo Drive

A Mercedes-BenzeBay logo AG Company

Sandy Springs, GA 30328

770.705.0600

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TSB/Document ID: EW-Fuel Filter Unit(PZEV)

Replacement Service Bulletin Number:

MFR Communication Date: 2023-10-20

MFR Internal Campaign ID/Software Version:

Communication Type: Warranty Program/Extension

NHTSA Components: FUEL/PROPULSION SYSTEM

MFR Component System:

MFR Component Subsystem:


Previous TSB

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