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SRX 2008 Key fob will not connect to car. Battery is ok.

solleykcsolleykc Member Posts: 2
edited September 2022 in Cadillac
After a problem that required the main battery to be disconnected, now the key fob will not connect or operate doors or trunk lid. I am in England. No Cadillacdealers here.


  • thecardoc3thecardoc3 Member Posts: 5,630
    RCDLR (remote control door lock receiver) should automatically synchronize with the key when one of the FOB buttons is pressed within 20m of the car. Do you know anyone that has a scan tool that will communicate with the door lock receiver and the body computer? If there are any codes set in them, they might help get a direction to troubleshoot this. By chance, does the TPMS system still work?
  • solleykcsolleykc Member Posts: 2
    TPMS does not work.
  • thecardoc3thecardoc3 Member Posts: 5,630
    The RCDLR is the receiver for the key FOB and the TPMS sensors. Since they are also not working the RCDLR module would be getting the first attention. Testing would start by pulling codes and see if it can communicate, or if other modules have codes for it failing to do so. If it isn't communicating with the rest of the car and the scan tool then testing for powers/grounds and communication circuits would be in order.
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