Humming at back of the car. - Page 2 - ClubLexus - Lexus Forum Discussion


ES - 6th Gen (2013-present) Discussion topics related to 2013+ ES models

Humming at back of the car.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-14-13, 07:12 AM   #16
bigblack06
Moderator
iTrader: (17)
 
bigblack06's Avatar
 
Join Date: Nov 2009
Location: Beantown
Posts: 5,961
Thanked 15 Times in 15 Posts
Default

Quote:
Originally Posted by LexBob2 View Post
As I recall, there is something in the owners manual about (humming) noises when the car is shut off and that it is normal. It's the fuel system purging itself periodically.

And as mentioned, the HID's make a humming sound too.
Yep, that's what it is. My GS does it and my mothers X3 does it as well, its normal there was a discussion in the 3GS forum thread on this. I'll see if I can find it.
bigblack06 is offline   Reply With Quote
Old 05-14-13, 07:19 AM   #17
jim256
Pole Position
 
Join Date: Jul 2006
Location: NC
Posts: 349
Thanked 3 Times in 2 Posts
Default

Quote:
Originally Posted by IS350atWOT View Post
Good to know. Maybe it starts only after its been parked over a certain amount of time?
True. Something like 8 hours, actually.
jim256 is online now   Reply With Quote
Old 05-14-13, 07:32 AM   #18
Tuanle
Driver School Candidate
 
Join Date: Apr 2013
Location: Fresno, CA
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I've had my ES350 for a month, but haven't noticed any noise when it's off. How long does the sound last after it starts?


Posted from ClubLexus.com App for Android
Tuanle is offline   Reply With Quote
Old 01-15-15, 09:13 PM   #19
mgm1247
Driver School Candidate
 
Join Date: Jan 2015
Location: NJ
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Default True

Quote:
Originally Posted by jim256 View Post
+1, It's a fuel evaporation leakage check, have had the sound on other cars but this one runs a little longer than the others.
Yes. This gentleman is correct. I bought my IS250 2 weeks ago. Heard the noise. Called the dealer. Evaporation leakage test. Normal. Hurts nothing on car. No drain on battery. Same power consumption as a wristwatch they say. Enjoying the car. But I wish I had the bucks for the FSport.
mgm1247 is offline   Reply With Quote
Old 01-16-15, 06:19 AM   #20
Freds430
Lead Lap
 
Freds430's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 403
Thanked 48 Times in 39 Posts
Default

Heard the same noise from my wife's RX350. I was really baffled until I came in to read this forum. It is the fuel system. You would think every salesperson would tell buyers of this noise. It is in the manual but who reads that cover to cover. Thought I read it only does it when the tank is a 1/4 low or only has a 1/4 of a tank left.
Freds430 is offline   Reply With Quote
Old 01-29-15, 08:13 PM   #21
grabilsm
Rookie
 
Join Date: Jul 2014
Location: md
Posts: 51
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I too heard this sound about 5 hours after the car was turned off. I did have 1/4 tank of gas so I am assuming its the vapor pump. Did anyone confirm this is normal on the es350 with the dealer because in the manual it says it only applies to hybrids.
grabilsm is offline   Reply With Quote
Old 01-30-15, 05:44 AM   #22
Mike728
Lexus Champion
 
Mike728's Avatar
 
Join Date: Mar 2013
Location: IL
Posts: 2,023
Thanked 33 Times in 31 Posts
Default

Quote:
Originally Posted by grabilsm View Post
I too heard this sound about 5 hours after the car was turned off. I did have 1/4 tank of gas so I am assuming its the vapor pump. Did anyone confirm this is normal on the es350 with the dealer because in the manual it says it only applies to hybrids.
Yes, it's very normal.
Mike728 is online now   Reply With Quote
Old 01-20-17, 08:00 PM   #23
telseg
Driver School Candidate
 
Join Date: Aug 2015
Location: new york
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Default Glad I found this

I walk into my garage and hear this humming coming from the car. It had been hours since I had driven it. After a couple of minutes of trying to figure out where it is coming from I finally pinpoint it coming from rear of car underneath. I get my key and power on the car to run through the System Check. Nothing unusual comes on the dash that would indicate a problem. I shut down the car and the noise is gone. Very odd.
telseg is offline   Reply With Quote
Old 01-21-17, 08:01 AM   #24
Mike728
Lexus Champion
 
Mike728's Avatar
 
Join Date: Mar 2013
Location: IL
Posts: 2,023
Thanked 33 Times in 31 Posts
Default

Quote:
Originally Posted by telseg View Post
.... Very odd.
But, very normal.
Mike728 is online now   Reply With Quote
Old 01-22-17, 12:50 PM   #25
jollick
Lexus Test Driver
 
jollick's Avatar
 
Join Date: Aug 2012
Location: GA
Posts: 1,146
Thanked 16 Times in 15 Posts
Default

Quote:
Originally Posted by telseg View Post
I walk into my garage and hear this humming coming from the car. It had been hours since I had driven it. After a couple of minutes of trying to figure out where it is coming from I finally pinpoint it coming from rear of car underneath. I get my key and power on the car to run through the System Check. Nothing unusual comes on the dash that would indicate a problem. I shut down the car and the noise is gone. Very odd.
I believe it has to do something with the fuel vapor recovery system. This is normal and I also have experienced it.
jollick is offline   Reply With Quote
Old 01-22-17, 02:38 PM   #26
lesz
Lexus Champion
 
Join Date: Aug 2013
Location: Illinois
Posts: 2,077
Thanked 85 Times in 74 Posts
Default

Quote:
Originally Posted by jollick View Post
I believe it has to do something with the fuel vapor recovery system. This is normal and I also have experienced it.
Not only is it normal, but all of our cars do the same thing, and they are all supposed to do it. It is just the case that many are unaware of it happening because it happens well after the car has been shut down, and, unless you happen, by coincidence, to be in the garage when it is happening, you wouldn't be aware of it.
lesz is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Hum when shifitng from park to reverse? promethus7 GS - 4th Gen (2013-present) 3 07-24-17 11:25 AM
Low Humming Sound dahiya RX - 3rd Gen (2010-2015) 5 01-12-17 09:27 AM
Whining/Humming Sound ruhroh GX - 1st Gen (2004-2009) 12 03-25-16 05:45 AM
What is this humming sound.....?. satiger ES - 1st to 4th Gen (1990-2006) 8 10-13-15 02:47 PM
removed air suspension - funny noise vidlev LS - 1st and 2nd Gen (1990-2000) 2 06-16-15 10:51 PM


Tags
350 , back , ca , car , es , es300h , hum , issue , lexus , noise , off , parked , rear , shut , trunck , unusual

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -7. The time now is 06:19 AM.


Copyright © 2000-2017 Internet Brands, Inc. All Rights Reserved
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: