Mercedes-Benz S320 mass airflow sensor replacement issue causing car to stall immediately after starting on Mercedes-Benz S320

Submitted by Cordy Lampley · Jun 23, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz S320 owners report experiencing stalling issues immediately after starting, often linked to a faulty mass airflow (MAF) sensor. These owners note signs such as poor fuel efficiency, reduced power output, and rough idling, which can indicate MAF sensor failure. In cases where cleaning the MAF sensor does not resolve the problem, it is recommended to replace it with a genuine Mercedes part or a high-quality aftermarket equivalent to ensure proper vehicle operation. During the replacement process, owners should be aware of the steps involved, including removing the electrical harness and securely installing the new sensor. Prompt attention to these symptoms is crucial to prevent further complications with the vehicle's performance.

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Mercedes-Benz S320 vehicles with this problem

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