the_buch

Just in the last few days I have noticed a very faint buzzing sound coming from behind the instrument cluster or dash near the area of the analog clock. The sound is best described as if someone was running an ultra-quiet electric razor. The sound comes on with the ignition key and shuts off anywhere from ten seconds to two minutes after the ignition is turned off.

Searches on this matter in the archives have failed to provide anything sufficiently specific or conclusive. Although, there was some previous speculation that it has something to do with the CCU? What the heck needs to buzz away in there for a minute after I cut the ignition?

Anything to worry about since it's just a brand new sound? Perhaps I just need to get the wax cleaned out of my ears so I can't hear my brain working like this.

Thanks

kkim

CCU sensor fan... perfectly normal.

Phil

2nd that!

the_buch

Kelly/Phil, thanks for your response. I thought it would likely be something innocent/normal for these crazy German engineers, but still wonder why it is suddenly more noticeable. Also if it keeps getting louder, it will become an issue.

Regards,

kkim

Doug,

While some noise is normal, if you have noticed that it makes more noise recently, perhaps a bearing for the fan is going out or it may be dirty. Here is one of many posts from the archives on the subject...

https://rennlist.com/forums/showthre...t=cleaning+ccu

Is it worth the effort? Entirely up to you and how much the noise bothers you to find out.

Good luck!

97Targa

Doug, thanks for posting. I was wondering the same thing. Although mine's not buzzing, I guess I didn't really notice it until lately.
Kelly and Phil thanks for the reassurance that nothing's wrong.

sidned

I get a buzzing sound, but it's quite load and I think it's coming from the fuel pump. It happens when I trun the ignition on and will stay buzzing for about 30 seconds, even if I don't turn the engine on. It also happens every so often when I'm idling for a few seconds (I'm sure it does it when I'm going along but I can't hear it over the engine noise ). If I press the brake when it's buzzing and the engine is off the buzzing dies down - could it be something to do with brake pressure?
Is this normal? I've only owned the car for 2 months and it's done it since day one. The PPI never mentioned it so I assumed it was normal.
Bottom line - is it something I should get checked before I get left stranded?

the_buch

I suppose if it's the fuel pump it could end up stranding you. To differentiate, note whether the noise continues with the ignition off and key pulled out (if it continues, likely it's this annoying ccu sensor fan). Also listen for the noise with the trunk open (if it's louder up there it may be the fuel pump). Good luck,

Monique

No noise at all from mine. OR... oops, I don't have one! Weight watchers please!