transmission-range sensor Archives - Transmission Digest
Chrysler Transmission-Range Sensor

The transmission range sensor (TRS) has three primary functions:

1. Provide a Park/Neutral start signal to the engine controller and the starter relay.
2. Turn the backup lamps on when the transmission is in Reverse and the engine (ignition) is on.
3. Provide a transmission-range signal to the instrument cluster.

VIN: ‘Very Important Number’

The acronym VIN is known to mean “vehicle identification number” but it also should be known as a “very important number.” Here is a good example of why that’s so.

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