I turned my car on and the panic horn would not stop. Took a horn relay out from under the hood to stop the noise. Now I have no audio on the radio/cd and the buttons to set the cruise control do not work. I lost the original relay that I removed and bought another one. Now the horn works but that is the only change. 2002 Saturn L100. I don't know what to try as there are no dealers near me.
The body control module (BCM) controls the operation of the horn for the security system and remote keyless entry (RKE) functions. Circuit 28 is grounded by the BCM when the horn operation is desired. Normal operation of the horn is performed by the horn switch grounding the horn relay and is not controlled by the BCM.
You don't need to take this to a dealer ,besides there are no more saturn dealers . Try a independent repair shop .
Does the cruise control light light up when you turn the cruise on ? Have you checked the fuse's ?
SOURCE: 2003 saturn L100 2.2 ltr
More than likely you just need a brake switch, just make sure you ask for the cruise deactivation brake switch.
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