Patrick Posted March 12, 2022 Share Posted March 12, 2022 Hello, The close codes 559, 557, 555 on the Essex keypad on my 2002 Monaco Dynasty Baroness stopped working a couple of weeks ago. The custom open code still opens the doors but the close codes no longer work. I asked for and received help on this forum. The conclusion was that replacement of the keypad was required. I wasn't thrilled about spending $299 (US) on another keypad, so I looked for alternatives. What I ended up doing is installing a keyless entry system for a fraction of the cost of a new keypad which meets my needs perfectly. This is how I did it. The Essex keypad works by completing a ground circuit to the door actuator. When the code is entered, either the open or close ground circuit is completed. Underneath the cup holder on the passenger side is access to the keypad wiring. Inside are two white multi-pin connectors and the reset button. I made all my connections through the wiring on these two connectors. (see photo) I purchased a keyless entry system from Amazon for about $22 CDN. The keyless entry system consists of a control module, wiring and two key fobs. I also had to purchase 2 x 5 pin 12V relays for about $7 CDN each. Aside from crimp connectors and a few bits of wire that was my total cost. When you press the button on the key fob a positive current is output from the control module. Since the open and close actuators the Essex keypad controls work by completing a ground, a positive current signal is not going to activate the actuator. The positive signal needs to be converted into a negative ground, that is where the relays come in. A positive signal from the control module activates the relay, which is wired to complete a ground circuit when active. The attached photos show how I wired things up and the keyless entry system I bought. The nice thing is that the Essex keypad still works just as it did, so anyone can add the keyless entry system without losing the functionality of their keypad. 1 Link to comment Share on other sites More sharing options...
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