Unidentified Beeping Sound Inside Cab

Topic 18459 | Page 1

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Gloria K.'s Comment
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Wondering if anyone can help me out with this. I drive a 2015 automatic Freightliner Cascadia with a Cummins engine, & for the past few weeks I have noticed a faint, high-pitch, intermittent beeping sound coming from somewhere inside the cab - seemingly the center of the dash. There are no lights associated with this, & it comes on at somewhat random times, lasting one to two seconds each time. I've only noticed it when the truck is on and I'm driving - I haven't noticed it while idling. I've ruled out a few things. It's not either one of my transponders, not my GPS, not the radio, & not my tractor tire pressure sensor. I've noticed it does seem to come on more frequently when I'm in a city and have to change my speed due to traffic. It will also often happen when I go over a bump. But even with the patterns or tendencies I've noticed, it's not 100% consistent. I've tried turning the battery off, letting it sit, then turning it back on & restarting it, & that did not do the trick. Any ideas?! Does this happen to anyone else?

Cwc's Comment
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You don't have a small black box on the passenger side of the dash do you?

Errol V.'s Comment
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Gloria, you didn't mention this, so I'm asking. Freightliners have an "information center" between the tach and the speedometer. You've seen it, but if some beeper goes off, a notification comes up in that rectangle. Do you see anything there?

Also, I assume you're a company driver. Next time you're in a terminal , pull over to the shop. That's why they're there.

Terminal:

A facility where trucking companies operate out of, or their "home base" if you will. A lot of major companies have multiple terminals around the country which usually consist of the main office building, a drop lot for trailers, and sometimes a repair shop and wash facilities.

Gloria K.'s Comment
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There's the black box that's the GPS antenna, but I don't think it's coming from that.

You don't have a small black box on the passenger side of the dash do you?

Gloria K.'s Comment
member avatar

No, nothing in the information center, & I've tried my company, but they're stumped too.

Gloria, you didn't mention this, so I'm asking. Freightliners have an "information center" between the tach and the speedometer. You've seen it, but if some beeper goes off, a notification comes up in that rectangle. Do you see anything there?

Also, I assume you're a company driver. Next time you're in a terminal , pull over to the shop. That's why they're there.

Terminal:

A facility where trucking companies operate out of, or their "home base" if you will. A lot of major companies have multiple terminals around the country which usually consist of the main office building, a drop lot for trailers, and sometimes a repair shop and wash facilities.

Errol V.'s Comment
member avatar

Gloria gets shrugged shoulders from the shop:

No, nothing in the information center, & I've tried my company, but they're stumped too.

Well, turn the radio up, or start singing when it beeps. Then when the engine falls out of the truck, tell 'em you already told them about it.

rofl-2.gifrofl-2.gif

Cwc's Comment
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There's the black box that's the GPS antenna, but I don't think it's coming from that.

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You don't have a small black box on the passenger side of the dash do you?

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Nothing really what I was getting at. I was thinking more along the lines of an onguard type system. Annoying beeping when you get close to something in front of you and will even beep going under an overpass. And occasionally when passing a guard rail.

Tractor Man's Comment
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Well, turn the radio up, or start singing when it beeps. Then when the engine falls out of the truck, tell 'em you already told them about it.

I nominate this for the "Best Answer Award".

rofl-1.gifsmile.gif

Rainy D.'s Comment
member avatar

Do you have a Doran tire pressure sensor or an on guard on the dash?

When I got my truck I heard the same. Terminal thought I was crazy. Now I get it when the on guard resets or the doran decides to beep. Quick and high tone.

Terminal:

A facility where trucking companies operate out of, or their "home base" if you will. A lot of major companies have multiple terminals around the country which usually consist of the main office building, a drop lot for trailers, and sometimes a repair shop and wash facilities.

Deb R.'s Comment
member avatar

Does your truck have an auto greaser? The alarm on that comes from the center area of the dash. Scared the whooy out of me first time it went off.

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