Circuit/System Description

2009 Cadillac STS Base, 4.6 A, RWDSECTION Circuit/System Description

When a transmitter authentication is requested, the console passive antenna broadcasts a challenge within the passenger compartment to the transmitter. If the response from the transmitter via radio frequency (RF) is a valid response, the RCDLR determines there is a transmitter within the vehicle. If no response is received, the RCDLR determines that no transmitter is in the vehicle, and NO FOB DETECTED will be displayed on the DIC.

Transmitter authentication occurs during any of the following situation:

  • When the vehicle is off and the start button is pressed.
  • When the vehicle is off and the brake pedal is pressed (vehicle must be awake)
  • When the vehicle is running and any door is opened and then closed.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
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  • β€’ You are not confident in the next step or safety outcome.