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722.9 Transmission Sensor Y3/8N1 A0335457332 Mechatronic Unit OEM Replacement Fits Mercedes W204

Transmission Sensor
July 28, 2026
Keyword: Transmission Sensor
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Tags:
#Transmission Gearbox Assembly #Transmission Oil Pressure Sensor #Transmission Gear Position Sensor
Video Description:
In this technical walkthrough, we demonstrate the proper identification and replacement process for the Mercedes 722.9 transmission sensor Y3/8N1 (A0335457332). You'll see how this critical mechatronic unit component collects turbine speed signals and learn to distinguish it from similar sensors like Y3/8N2 and Y3/8S1 to prevent shifting issues and warning lights. We'll show the installation procedure and compatibility across various Mercedes models including W204, W211, and W221 series.
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