Automatic transmission selector sensor for Mercedes-Benz W204
The automatic transmission shift sensor, also known as the shift position switch, is an important component of the vehicle’s transmission system. It is responsible for detecting the position of the automatic transmission selector and transmitting this information to the electronic control unit (ECU).
Functions:
* Automatic transmission selector position detection (park, neutral, gear)
* Transfer information to the ECU to engage the appropriate gears
* Engine start blocking if the selector is not in the ‘park’ or ‘neutral’ position
* Ensure proper operation of the transmission control system
Location:
The automatic transmission selector sensor is usually located on the transmission housing, next to the automatic transmission selector.
Types of automatic transmission selector sensors:
* Proximity sensors: Use a magnetic or optical sensor to detect selector position without physical contact.
* Contact sensors: Use mechanical switches or electrical contacts to detect the position of the selector lever.
Malfunctions:
A faulty automatic transmission selector sensor can cause a variety of problems, including:
* Inability to change gears
* Inability to start the engine
* Errors in the operation of the transmission control system
Replacement:
Replacing an automatic transmission selector sensor usually requires special tools and knowledge. It is recommended that you have a qualified mechanic perform this task.
OE numbers:
Regular OE numbers for automatic transmission selector sensor for Mercedes-Benz W204:
* A 212 900 66 00
* A 212 900 88 00
* A 212 900 91 00
* A 212 900 93 00