by MP1116 on August 27th, 2004

MP1116

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My car radio resets itself, losing all saved stations and clock settings. This happens randomly and frequently during very cold winter nights. What could be causing this?

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  • by Thom64 on August 28th, 2004

    Thom64

    Not knowing what kind of car or what kind of radio, I could be off, but I think the most likely problem is a broken or loose power connection. Many radios lose their presets if power is interrupted. This could be at the fuse box, or inside the radio or somewhere in between.

    If you can get at the radio wiring harness and identify the continuous power input wire (the one that feeds the clock and presets is different from the switched line that powers the radio), you could try running a new wire from a different unswitched fuse or a new fused line directly from the battery into that line, perhaps using one of those clip-on wire tap things. If the problem goes away, you know the problem is not the radio, but somewhere between the battery and the radio. A loose connection inside the radio is harder to diagnose.

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