How do you change a MAS on a Mercedes s500?

Open the engine hood.

Remove the plastic covers.

Remove the air intake housing.

MAF sensor in located right in the middle of the air intake housing.

The MAF is mounted on the hose, unscrew the hose clamp to remove the MAF out of the intake housing.

Be careful to disconnect two electronic connectors, the left side (Driver side) is the MAF sensor, and the right side (passenger side) is the temperature sensor.

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