{"nhtsa_id":11036999,"type":"warranty_extension","type_name":"Warranty extension","date_added":"2026-09-04","date":"2026-08-15","document_id":"CL - Tank Leak Detection","mfr_campaign":null,"replaces":null,"component":"FUEL/PROPULSION SYSTEM","mfr_system":null,"summary":"Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage Detection (\"DMTL\") on your vehicle from the original New Vehicle Limited Warranty of 4 years / 50,000 miles to 15 years/150,000 miles (whichever occurs first). This applies to the vehicle regardless of ownership. Why the Warranty extension? On certain Model Year 2018 - 2024 A / C / CLA / CLS / E / G / GLA / GLB / GLC / GLE / GLS / GT / S / SL Mercedes-Benz vehicles, 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\"). Any repairs under this warranty extension must be performed by an authorized Mercedes-Benz dealership. • If your preferred authorized Mercedes-Benz dealership performs a diagnosis and confirms that your vehicle has the issue, the repair will be covered under this extended warranty and performed at no cost to you. • This extended warranty does not apply to any other components or conditions beyond the ones mentioned above, and standard warranty terms apply, including the exclusions with respect to extra expenses, as identified in the Service and Warranty Information booklet.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036999-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036999-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036999","components":[{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MERCEDES BENZ","model":"A 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