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November 28, 2024 Service bulletin

SMOG/Emissions Test fail due to one or more Readiness Monitors not set Complaint: The vehicle has failed...

Mercedes-Benz technical service bulletin LI49.00-N-078608 for 2007-2024 Mercedes-Benz Sprinter 2500, 2007-2024 Mercedes-Benz Sprinter 3500 and 2015-2023 Mercedes-Benz Metris and others.

Bulletin number
LI49.00-N-078608
Component
Engine
Summary
SMOG/Emissions Test fail due to one or more Readiness Monitors not set Complaint: The vehicle has failed the State Emissions Certification because one or more of the OBDII readiness monitors are not completely set. Cause: One or more of the following Readiness Monitors are not fully set within XENTRY: Misfire Monitoring - Injection System Fuel System Monitoring - Injection System, Fuel System, EGR Valve, O2 Sensor NMHC Catalyst Monitoring - NMHC/Diesel Oxidation Catalyst NOx Aftertreatment Monitoring - SCR Catalyst System Boost Pressure System Monitoring - Turbocharger, Charge Air System Exhaust Gas Sensor Monitoring - O2 Sensor, NOx Sensors Diesel Particulate Filter Monitoring - Diesel Particulate Filter System Exhaust Gas Recirculation System Monitoring - EGR Valve and system Remedy: Please complete the required driving conditions to fully set the incomplete Readiness Monitor. DO NOT: - Erase any fault codes. If fault codes are present, process these and allow the readiness drives to clear fault codes. - Flash or SCN code the CDI or SCR control units. - Perform a manual DPF regeneration, unless instructed below. - Disconnect the main battery.

Owners of these vehicles have filed 180 complaints in the engine category.

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