Constant buzzing in cab of Ducato 2008 Ci Mizar

[Wrightys]

hello everyone ,I’m at my wits end ! I’ve bought a new to me 2008 Ducato 130 CI mizar motorhome , with an after market alarm. The buzzing noise is constant , I’ve checked everything, door contacts, hab step (there isn’t one) everything works fine, drives well etc, I’ve traced the fuse to the radio/windows/alarm so can pull this but non of these will work . Trouble is the tone of the buzzing seems like it’s coming from the cab but my ears can’t seem to locate it. I’ve fitted a new radio so had 1/2 the dash out and couldn’t find anything , I’ve disconnected the battery for an hour, also the alarm siren and still no joy. I’m ready to throw the towel in and get an auto electrician involved but don’t want to admit defeat! I’m really hoping someone has had this issue and knows what it is
thanks in advance
anthony

 

[Bfreebt65]

hello everyone ,I’m at my wits end ! I’ve bought a new to me 2008 Ducato 130 CI mizar motorhome , with an after market alarm. The buzzing noise is constant , I’ve checked everything, door contacts, hab step (there isn’t one) everything works fine, drives well etc, I’ve traced the fuse to the radio/windows/alarm so can pull this but non of these will work . Trouble is the tone of the buzzing seems like it’s coming from the cab but my ears can’t seem to locate it. I’ve fitted a new radio so had 1/2 the dash out and couldn’t find anything , I’ve disconnected the battery for an hour, also the alarm siren and still no joy. I’m ready to throw the towel in and get an auto electrician involved but don’t want to admit defeat! I’m really hoping someone has had this issue and knows what it is
thanks in advance
anthony

Yep I had the same problem and couldn't work out where it was coming from. It actually sounded like it was overhead. It was the step alarm positioned under the drivers seat.
I snipped the wires until I can get it fixed under warranty.

 

[jess12]

Had a similar issue. turned out to be the volume control on the reversing camera drove me nuts for months

 

[JaG]

We had a similar sound and it turned out to be the control box for the towbar. The reversing sensor had a short in it. Took me ages to find it as I could not pinpoint it. Maybe it's that.

 

[Bfreebt65]

We had a similar sound and it turned out to be the control box for the towbar. The reversing sensor had a short in it. Took me ages to find it as I could not pinpoint it. Maybe it's that.

Yes I had that in my car also just recently.

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[jimdob]

hello everyone ,I’m at my wits end ! I’ve bought a new to me 2008 Ducato 130 CI mizar motorhome , with an after market alarm. The buzzing noise is constant , I’ve checked everything, door contacts, hab step (there isn’t one) everything works fine, drives well etc, I’ve traced the fuse to the radio/windows/alarm so can pull this but non of these will work . Trouble is the tone of the buzzing seems like it’s coming from the cab but my ears can’t seem to locate it. I’ve fitted a new radio so had 1/2 the dash out and couldn’t find anything , I’ve disconnected the battery for an hour, also the alarm siren and still no joy. I’m ready to throw the towel in and get an auto electrician involved but don’t want to admit defeat! I’m really hoping someone has had this issue and knows what it is
thanks in advance
anthony

Ours was a sensor needing new batteries

 

[scotzsue]

We had a 2008 CI Mizar with the same problem it was one of the rear garage door sensors, it didn't quite hit the 'off' switch, our solution was to tape a plastic milk bottle top over the off switch. Only happened aftr the door had been off for something