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Warranty

Mercedes-Benz Dealer Principals, General Managers,
Sales Managers, Service Managers, Parts Managers
TO:

RE: Emission Extended Warranty – Exhaust Valve
Assembly MY19-22 A-Class (177), GLA-Class (H247),
CLA-Class (118) and GLB-Class (X247)

Joe Haller, Senior Manager – Warranty,
Gregory Gunther - Senior Manager, Vehicle
Compliance and Analysis, Engineering Services
FROM:

DATE:

August 04, 2023

IMPORTANT EMISSION EXTENDED WARRANTY INFORMATION
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our
customers, Mercedes-Benz USA, LLC (“MBUSA”) 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 assembly (e.g. exhaust valve, cylinder head).
•

The valve guide and/or seat ring may wear over time due to increased lateral forces during operation. This could potentially
cause combustion misfire for cylinder 1 through 4, 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
A-Class 2019 – 2022
CLA-Class 2020 – 2022
GLA-Class 2021 – 2022
GLB-Class 2020 – 2022

Sales Designation
A 220, A 220 4MATIC, AMG A 35, AMG A 35 4MATIC
CLA 250, CLA 250 4MATIC, AMG CLA 35, AMG CLA
35 4MATIC
GLA 250, GLA 250 4MATIC, AMG GLA 35, AMG GLA
35 4MATIC,
GLB 250, GLB 250 4MATIC, AMG GLB 35, AMG GLB
35 4MATIC

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.
•
•
•
•

P030085 – Combustion misfire has been detected
P030x85 – Cylinder x misfire detected. (x = the affected cylinder)
P1CEF85 - Injector injection quantity adjustment for cylinder balancing has almost reached the upper limit value at atleast
one cylinder.
P1CE577 - Injector injection quantity adjustment for uniform mixture formation has detected an excessively lean mixture
at atleast one cylinder.

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

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Warranty

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 the aforementioned repairs:
Damage Codes:
•
•
•
•

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

Part(s): Quantity

Part Name

Part Numer

01

Cylinder Head

*

*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, accident, vandalism 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 August 04, 2023.
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

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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 assembly 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.

Should you have any questions or concerns, please do not hesitate to open a Warranty Services case online.

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600