News Channel Update |

Warranty

TO: Mercedes-Benz

Dealer Principals, General Managers,
Sales Managers, Service Managers, Parts Managers
RE: Emission Extended Warranty – Diagnostic Module for
Tank Leakage (DMTL) MY18-23, Various Models and
Platforms (see chart below)

FROM: Teresa

Clemmer, Senior Manager – Warranty,
Gregory Gunther - Senior Manager, Vehicle
Compliance and Analysis, Engineering Services
DATE:

May 15, 2025

IMPORTANT EMISSION 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 (“MBUSA”) is extending the warranty coverage on the Diagnostic Module for Tank Leakage
detection (DMTL) in certain Model Year (“MY”) vehicles listed below from the original New Vehicle Limited Warranty of 4
years/50,000 miles to 10 years/120,000 miles (vehicles certified as LEV II) and 15 years/150,000 miles (vehicles certified as LEV
III), whichever occurs first, for the following condition:
•

Under certain circumstances, the DMTL may trigger erroneous Diagnostic Trouble Code (DTC) entries that may result in the
illumination of the Check Engine Malfunction Indicator Lamp (‘MIL’).
Model Model Years
A-Class 2019 - 2022
C-Class 2018 - 2022

E-Class 2018 - 2022

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

Sales Designation
A 220, A 220 4MATIC, AMG A 35, AMG A 35
4MATIC
C 350 e, C 300 Coupe, C 300 Convertible,
C 300 4MATIC Coupe, C 300 4MATIC
Convertible, C 300 4MATIC, C 300,
AMG C 63 S Coupe, AMG C 63 S Convertible
AMG C 63 S, AMG C 63 Coupe, AMG C 63
Convertible, AMG C 63, AMG C 43 4MATIC
Coupe, AMG C 43 4MATIC Convertible,
AMG C 43 4MATIC
E 450 Coupe, E 450 Convertible, E 450 4MATIC
Wagon All Terrain, E 450 4MATIC Wagon,
E 450 4MATIC Coupe, E 450 4MATIC
Convertible, E 450 4MATIC, E 400 Coupe
E 400 Convertible, E 400 4MATIC Wagon
E 400 4MATIC Coupe, E 400 4MATIC
Convertible, E 400 4MATIC, E 350 4MATIC
E 350, E 300 4MATIC, E 300, AMG E 63 S
Wagon, AMG E 63 S 4MATIC Wagon, AMG E 63
S 4MATIC, AMG E 63 S, AMG E 53 Coupe, AMG
E 53 Convertible, AMG E 53 4MATIC+ Coupe
AMG E 53 4MATIC+ Convertible, AMG E 53
4MATIC+, AMG E 53 4MATIC Coupe, AMG E 53
4MATIC Convertible, AMG E 53 4MATIC

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

Certification

Only MY 2018 GLE 350, GLE 350
4MATIC, GLE 350 4MATIC (FFV)
certified as LEVII. The remainder of the
vehicles are certified as LEVIII

News Channel Update |
Model Model Years
G 2019 – 2022
GLA 2021 – 2022
GLB 2020 – 2022
GLC 2018 – 2022

GLE 2018 – 2022

GLS 2018 – 2022
GT 2019 – 2022
S-Class 2018 – 2022
SL 2022 – 2023
CLA 2020 - 2022
CLS 2019 – 2022

Mercedes-Benz USA, LLC
One Mercedes-Benz Drive

Warranty

Sales Designation
AMG G 63, G 550, G 63 4x42
GLA 250, GLA 250 4MATIC, AMG GLA 35, AMG GLA 35 4MATIC
AMG GLA 45, AMG GLA 45 4MATIC
GLB 250, GLB 250 4MATIC, AMG GLB 35, AMG GLB 35 4MATIC
AMG GLC 43, AMG GLC 43 4MATIC, AMG GLC 43 4MATIC Coupe
AMG GLC 43 Coupe, AMG GLC 63, AMG GLC 63 4MATIC
AMG GLC 63 4MATIC Coupe, AMG GLC 63 Coupe, AMG GLC 63 S
4MATIC Coupe, AMG GLC 63 S Coupe, GLC 300, GLC 300 4MATIC
GLC 300 4MATIC Coupe, GLC 350 e 4MATIC
AMG GLE 43 4MATIC, AMG GLE 43 4MATIC Coupe, AMG GLE 53
4MATIC+, AMG GLE 53 4MATIC+ Coupe, AMG GLE 63 S
AMG GLE 63 S 4MATIC+, AMG GLE 63 S 4MATIC+ Coupe,
AMG GLE 63 S Coupe, GLE 350, GLE 350, GLE 350 4MATIC,
GLE 350 4MATIC (FFV), GLE 350 4MATIC (ULEV), GLE 400 4MATIC
GLE 450 4MATIC, GLE 450 4MATIC (with GPF), GLE 550 e 4MATIC,
GLE 580 4MATIC
AMG GLS 63, AMG GLS 63 4MATIC+, GLS 450 4MATIC, GLS 550
4MATIC, GLS 580 4MATIC, GLS 600 4MATIC Maybach
AMG GT 43, AMG GT 43 4MATIC+, AMG GT 53, AMG GT 53 4MATIC+
AMG GT 63, AMG GT 63 S
AMG S 63 4MATIC, S 450, S 450 4MATIC, S 500, S 500 4MATIC,
S 560, S 560 4MATIC, S 560 4MATIC Maybach, S 560 e, S 580
4MATIC, S 580 4MATIC Maybach
AMG SL 55 4MATIC+, AMG SL 63 4MATIC+, AMG SL 43
AMG CLA 35, AMG CLA 35 4MATIC, AMG CLA 45, AMG CLA 45
4MATIC, CLA 250, CLA 250 4MATIC
AMG CLS 53, AMG CLS 53 4MATIC, CLS 450, CLS 450 4MATIC

A Mercedes-Benz Group AG Company

Sandy Springs, GA 30328

770.705.0600

News Channel Update |

Warranty

Repairs addressing a MIL and are being claimed under this extended warranty must have a quick test uploaded with below
mentioned conditions and such repairs may be audited.
 If at least one fault code from Group A is present, the evaporative emissions system should be checked for system leakage
through guided test. If no leakage is detected, proceed with replacing the DMTL.
 If at least one fault code from Group B is present, then no guided leakage test is necessary and DMTL can be replaced.
•

Group A
o
o

•

P04567A - Evap System Small Leak.
P04427A - Evap Emission Control System Leak Detected (Small Leak).

Group B
o
o
o
o
o
o
o
o

P245000 - EVAP System Switching Valve Performance/Stuck Open.
P240707 - EVAP system Leak Detection Pump Sense Circuit Intermittent/Erratic.
P240200 - Activation of the pump in the diagnostic module of the fuel evap system has a short circuit to positive.
P240100 - Activation of the pump in the diagnostic module of the fuel evap system has a short circuit to ground.
P240000 - Activation of the pump in the diagnostic module of the fuel evap system has an interruption.
P240727 - Signal slew rate is above the allowed limit.
P240726 - Signal slew rate is below the allowed limit.
P240700 - Pump in the evap emission control diagnostic module has an intermittent malfunction (humidity error).

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):
•

4700M – Diagnostic unit, leak tightness, fuel tank

Part(s):
•

A 000 545 01 41 – Diagnostic Module, Tank Leakage

Please note that damage incurred from abuse, accidents, 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 10 years/120,000 miles or 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 May 16, 2025.
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 Diagnostic Module for Tank Leakage (DMTL), 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