News Channel Update |

Warranty

TO: Mercedes-Benz

Dealer Principals, General Managers,
Sales Managers, Service Managers, Parts Managers
RE: Extended

Warranty – Cylinder Head M264
MY2018 – 2023 C-Class, E-Class, GLC and GLE vehicles

FROM: Teresa

Clemmer, Senior Manager – Warranty,
Joseph Haller – Interim Senior Manager, Vehicle
Compliance and Analysis, Engineering Services
DATE:

January 09, 2026

IMPORTANT EXTENDED WARRANTY INFORMATION
In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our
customers, Mercedes-Benz USA, LLC is extending the warranty coverage on the exhaust valve system in certain Model Year (MY)
vehicles 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 extended warranty applies to the condition described below that may necessitate the repair or replacement of components
related to the exhaust valve system on the 4-cylinder engine M264. (e.g. exhaust valve, cylinder head).
The exhaust valve guide and/or seat may wear irregularly over time due to increased lateral forces during operation. This could
potentially cause a combustion misfire, resulting in an activation of the check engine Malfunction Indicator Lamp (“MIL”).
The following models are included in this emission extended warranty:
Model Model Years
C-Class 2019 – 2023
E-Class 2018 – 2023
GLC 2020 – 2023
GLE 2020 – 2023

Sales Designation
C300, C300 4MATIC, C300 Coupe, C300
4MATIC Coupe, C300 Convertible, C300
4MATIC Convertible
E300, E350, E350 4MATIC

Baums.
205.083, 205.084, 205.384, 250.484,
250.383, 205.483

GLC 300, GLC 300 4MATIC, GLC 300 4MATIC
Coupe
GLE 350, GLE 350 4MATIC

253.384, 253.983, 253.984

213.048, 213.083, 213.084

167.148, 167.149

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

P030x – Combustion misfire has been detected.
P030x85 – Cylinder x misfire detected. (x = the affected cylinder).
P219x – Mixture formation (cylinder) is irregular.

•

P1CEF85 - Injector injection quantity adjustment for cylinder balancing has almost reached the upper limit value on at
least one cylinder.
P1CE577 - Injector injection quantity adjustment for uniform mixture formation has detected an excessively lean mixture
on at least one cylinder.

•

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

News Channel Update |

Warranty

For repair guidance, please reference LI01.30-P-072328.
All repairs 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 these repairs:
Damage Code(s):
•
•
•
•

01201 – Cylinder Head
05202 – Exhaust Valve
01205 – Valve seat ring exhaust valve
01206 – Valve Guide Exhaust Valve

Part(s): Quantity
01

Part Name
Parts Kit, Cylinder Head*

Part Number
A 2640109007,
A 2640106607,
A 2640106407

*The replacement parts must be determined according to the equipment variant for the vehicle identification number via the parts process in Xentry Portal.

Please note that damage incurred from abuse, accidents, vandalism, poor maintenance, or other non-warrantable causes that are
not covered by the New Vehicle Limited Warranty are similarly not covered by this Extended Warranty.
IMPORTANT:
1) Always check VMI to determine if a vehicle is covered under the 15 years / 150,000 miles 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 January 09, 2026.
Approximately two weeks after the posting of this NCU, a letter will be sent 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.

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

News Channel Update |

Warranty

Reimbursement to Customers for Valid Repairs Performed Prior to Warranty Extension
Customers who have already paid to have a repair to the exhaust valve system, resulting in a check engine MIL activation may
be eligible to receive reimbursement.
Requests for reimbursement may include expenses for Mercedes-Benz 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-Benz dealership might not be reimbursed.
The following documentation must be presented to the servicing or closest Mercedes-Benz 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-Benz 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-Benz 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-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600