45RFE and 545RFE Transmission Pressure Sensor Replacement

This video explains how to replace the Transmission Fluid Pressure Sensor on Chrysler 45RFE and 545RFE Transmissions found on Dodge Dakotas, Dodge Durango and some Jeep Grand Cherokee..
The 45RFE is a 4 Speed Automatic Transmission built from 1999 to 2002, and the 545RFE is a 5 Speed Automatic Transmission built from 2003 to 2011.
The fully electronic control on all RFE Transmissions is accomplished by the Transmission Control Module (TCM). Depending on year and application, it can either be a stand-alone module or integrated with the Powertrain Control Module (PCM). The TCM uses data from various transmission and engine sensors to control transmission shifting. The transmission operates the solenoid pack to change hydraulic flow through the valve body to various clutches in the transmission. The solenoid pack is mounted directly to the valve body; its connector protrudes from a hole on the left side of the transmission. On the 45 and 545RFE the hydraulic control system design (without electronic assist) provides the transmission with PARK, REVERSE, NEUTRAL, SECOND, and THIRD gears, based solely on driver shift lever selection. This design allows the vehicle to be driven (in “limp-in” mode) in the event of an electronic control system failure, or a situation that the Transmission Control Module (TCM) recognizes as potentially damaging to the transmission.
The OEM number for this Pressure Sensor is: 04799758T. You can also purchase an aftermarket replacement from your local Auto Parts Store.

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