This is weird-I tried to search the Forum for any previous posts but couldn't find anything

Car was in the garage. Had been off for hours. Husband noticed a high pitched whine coming from the rear of the car. Louder underneath. I opened the trunk and took out everything in the cargo net (thought something had gotten stuck in it, a gadget of some kind). Nothing there. I went to unhook the net and pull up the mat etc. and the noise stopped (coincidence I'm sure).

I couldn't find anything. It didn't sound like it was coming from the wing at all (had trouble with wing being stuck down when I first got it).

Any thoughts? Poltergeist?

 

Have NO idea what you're talking about Can you record it on your Phone so we can Hear it

 

Probably the dreaded fuel pump issue. It's inside the fuel tank, located where you're hearing the noise. Call your dealer and get it towed (on a flat-bed, of course), to avoid getting stranded somewhere. They seem to be crapping out at 4 to 6K miles. Good luck.

 

I would have to agree with the potential for a failed fuel pump; however I would disagree with the "dreaded" comment as its still not a common failure. Also the fact that the car had been off for hours leads me to believe this was not due to said fuel pump, but most likely associated with the sound system or another electronic device

Did the emitted sound seem mechanical, e.g. a whirring motor?

 

Fuel Pump. Mine did that as well.
Ask them to order it before leaving car for weeks.

 

From the manual...

Image won't load - But check Page 8 in manual.

"Approximately five hours after engine is turned off, you may hear sound coming from under the vehicle for several minutes. This is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction."

 

Yup, Fuel EVAP check....part of new emissions garbage.

I had a loaner ES and IS do it too, tripped me out as well.

 

It's an M4 fanboi whining in your trunk.

 

You're absolutely correct this happens. It has happened to my car several times while working on it... and was aware of it when I read the entire manual the first time.

OP, if that's what happened, should have titled your thread better (How about: "Brief high pitched whine with engine off"?). Anyway, wasn't the only one who misinterpreted it. But hope it was just the evap system. Please confirm your car actually runs.

 

^^ My interpretation was "there is noise coming from the rear end, while the car is not running"

My guess if all else is normal it's the EVAP systems purge..


Joe Z

 

Well, so far the 'interpretation' score is 3 vs 3. Let's wait until the OP confirms his problem. But no doubt subject was poorly written.

 

Agree with JC, the title is a little misleading. I think a lot of us are "spooked" about the fuel pump failing and righteously so. I actually use to listen out for it, but since I've clocked a little over 10K I've kinda stopped worrying about it so much.

 

My GX does the same thing. I was a little worried after the first time it happened but my service advisor, who BTW is exceptional, assured me it was a normal operation.

 

Thanks, that must be it! Sorry about the title-I can see how it may have been confusing. My car is running fine. The noise occurred several hours after I turned the car off. I have 30,000 miles on my car (I drive about 90 miles round trip each day to work)

Good to know about the fuel pump issues some have had

Thanks for all of your input!