Buzzing/ humming noise from under the dashboard

[grad]

Hey guys i am hearing a buzzing noise under the dash of my toyota prado. It sometimes buzzes for a few seconds sometimes more. Its intermittent. I hv read that it cud be a servo, relay, fan motor or the apolocalypse. Anyone had any experience with this? Video attached in next post

[grad]

Ok cant attach with phone for some reason will try on laptop later

[ramishrrr]

There are servomotors that control air flow for the climate control system, by opening and closing little baffles over the ports. Maybe you have a bad one. When you hear the noise coming, change the air control from face to feet or whatever. In this way you may be able to give a little more info to your AC repairman.
Be assured that they will not be cheap.
Peace.
RR

[cueball1990]

definitely the apocalypse

[adnj]

You will have to isolate by disconnecting connectors or fuses to see if the noise is from the electrical control systems. Prado may still be using vacuum controls, you could disconnect those also.

Don't assume that the noise is not coming from a loose bracket or a missing fastener. In my experience, more noise comes from something that is loose, rubbing or lacking lubrication than anything else.

NVH abatement inside the cabin is typically extremely difficult to solve. That's why many luxury cars are sold by the owners after a major collision repair.

[grad]

[grad]

Thanks for the info, I will try changing the air flow from face to feet.

Will also try to isolate some of the fuses. Also video attached so you hear the noise. Its intermittent. Sometimes for weeks i wont hear it and then some days it wont stop.