NHTSA Service Bulletin 11029276: 2023-2025 Freightliner Sprinter 1500

In our continuing efforts to assure the proper performance of our products and to ensure the satisfaction of our customers, the warranty for the low pressure EGR differential pressure sensor in the vehicles listed below has been extended from 5 years/100,000 miles to 15 years/150,000 miles, whichever occurs first. Mercedes-Benz AG has determined that on Sprinter (907 platform) vehicles, under certain circumstances iodine corrosion might take place on the bonded connection of the low-pressure Exhaust Gas Recirculation (EGR) differential pressure sensor, which could lead to an electrical fault. In the potentially affected vehicles iodine corrosion on the bonded connection of the low pressure EGR differential pressure sensor might be caused by the release of iodine from rubber parts if the vehicle is exposed to excessive temperatures from sun exposure or in the event of significant heat accumulation due to long idle phases. The released iodine might promote electro corrosion on the sensors bonding. As soon as the iodine corrosion has progressed to the point where there is no longer an electrical connection, this would be correctly recognized by the low pressure EGR differential pressure sensor diagnostics as a hardware failure, the corresponding error code would be stored and the Malfunction Indicator Light would illuminate (2-trip MIL). Furthermore, corresponding error replacement reactions (e.g. deactivation of EGR and DPF regeneration, blocking of OBD-relevant diagnostics, and activation of limp home mode) would be initiated. As a result of the error replacement reactions, exhaust emissions might be increased. Due to the illumination of the MIL as well as the activation of the replacement reactions (including limp home mode), it is anticipated that customers would visit a workshop promptly.