Relay noise on pass. side, should I worry about before trip?

[Zoo Mob]

Very random occasional relay noise coming from under the passenger side dash, did not seem to affect anything but radio turned off last time it happened. It will click a bunch of times and then the noise goes away. Any thoughts on what could be causing this, how would I fix it, and is this something I should deal with before driving from Michigan to Arizona? Could it strand me?

Thanks

[n2x4]

Hmm,

Tough to say what that is. My guess is the Illumination control, though I don't know how that would tie into the radio maybe for radio illumination? The cruise control computer is over on that side too. That's all I can really think of on the passenger side...

[beatersubi]

Mine does that too. Its dependent on climate control position, I think. Not sure what the relay is actually for, though.

[kimokalihi]

If it happens when you turn the heater on I think it's the heater box trying to change vents. Mine did that for a while when I first got the car but after using the heater a lot it stopped. When I reached under the dash and helped the little gears move it stopped too.