Low / Faint beeping Noise R33 S2

[ADM33T]

Hi All,

Hoping for some advice as I have lost hope after about 30mins lol

So the issue developed about 2 weeks ago when I moved it to wash.

Moving in / out the driveway and sitting idle I could hear a very low constant beep noise, at first I thought it was the turbo timer but nope it's def not that.

I have stuck my head all through out the dash around the drivers side, the best location is above the left knee around the steering column but I still can't locate it. It's a very low pitched beep and if you were sitting in the passenger seat you probably wouldn't hear it.

It also was not present prior to hearing it.

Any help is appreciated.

[ADM33T]

Anyone ??? It's still happening and just can't pin point what it is.

[Sinista32]

Check for a small speaker looking unit behind the drivers side door card

other thought was an aftermarket alarm with a dead/dying roll of watch batteries

perhaps even a hidden turbo timer behind the dash

[ADM33T]

Il get back on the job tomorrow.

It def stops when the ignition is turned off though, doesn't sound like its from the door I'm sure about that.

[Sinista32]

You don't have a mongoose M80 alarm?

[ADM33T]

Well not that I am aware of.
I might have to do some more digging around

[ADM33T]

So I pulled the turbo timer all out... Guess what ????

Still beeping.

Any other suggestions ?

Thanks

[Steve85]

Depending on the sound it could be some sort of earthing issue. I know that one of my old cars made a low pitch whine when it was started. It varied with the RPM of the engine. 

One thing I can suggest is to double check your terminals on the battery (assuming you don't have two). Make sure they are super clean and tight. If your car has a separate earthing point to the chassis (normally located either at the front of the car or near the strut towers), check the earth. If this is in poor shape you can introduce all sorts of odd harmonics.

The other sound that it could be is a dying capacitor. They make a funny squealing sound when they are dying. Do you have any electronics (PCBs) mounted in the area that could be the source? 

[Steve85]

^^^ That said if you are absolutely sure this is a beep and not some spurious noise, you need to look for electronic boards. You will most likely be hearing a piezo speaker. These are generally smaller than a 5 cent piece and are mounted within electronics, so are hard to hear. 

Most smart (read: well designed) items will start to beep if the board detects a lack of power. 

Quote

dead/dying roll of watch batteries

This is most likely the reason, most of the circuit will be receiving 12V (or thereabouts) from the car and will operate fine, but the backup battery (normally a lithium watch or button battery) may run on a different area of the board with it's own power sense circuit. When the power drops the circuit will move from it's normal mode of operation, to a circuit that include the speaker, thereby creating the beep. 

I'm not familiar with enough of the R33 electronics or any of the aftermarket items to know what it could be, but you may find it's as silly as the clock or radio in the car.

I'd suggest (if it bothers you enough) to pull off any trim in the area and try to isolate the sound. It could be coming from deep within your dash.

[rhodieee]

Is it only on when the car is on? I have the same problem on my 33 s2

[ADM33T]

Yes that's the stumping part.

Only when the car is on it beeps.

It's comes from around the steering column.

I'm going to spend some more time on it as I noticed the greddy control boxes are shoved around in there ( I assume control boxes for boost and oil temp gauge ) I seem to have a sneaky suspicion it may be either of them cause that's the only items in the vicinity.

Also ripped out the turbo timer and still doing it.

[JZP]

Not some sort of no name immobiliser tucked way up under the dash? 

[ADM33T]

Will find out when I do some more digging around and pull more stuff around or out.

[Steve85]

Any resolution to this one? I would be keen to hear how you went.

[stewart1]

Are you sure it's not the reverse beeper mine was disconnected it has a white plug left knee position...it also beeps if you open the door with keys in from memory...

[kool]

Any solution to this ? I have similar situation in my skyline V35, 3 beeps at ~1 every 2 sec interval even without keys inserted, lower than the sound it makes when I leave the keys in with door open. Does not make the beep sound when I have car running though. 

Edited February 23, 2019 by kool

[kool]

New Recording 4.m4a

[kool]

this sound which is coming from somewhere near steering wheel