Topping of Gas - Causing Knocking
03-03-20 | 12:23 PM
#32
Pit Crew
Joined: Jun 2010
Posts: 148
Likes: 55
From: ca
I found this Technical Service Bulletin today from Lexus USA. It looks like there is a fix for the knocking noise that occurs when the fuel tank is full. On my vehicle, this has been occuring when the gas tank is "just full" and not overfilled.
https://static.nhtsa.gov/odi/tsbs/20...53199-9999.pdf
Not sure if there is a similar TSB in Canada.
I wonder if you have to go in with a full tank so that they can make the diagnosis??
https://static.nhtsa.gov/odi/tsbs/20...53199-9999.pdf
Not sure if there is a similar TSB in Canada.
I wonder if you have to go in with a full tank so that they can make the diagnosis??
It's always been there and I took it to the dealer today after finding your post, now I'm waiting on parts. I will let you guys know if this fix the issue.
I did go in with a full tank of gas.
03-04-20 | 05:39 AM
#33
Pit Crew
Joined: Mar 2019
Posts: 130
Likes: 24
From: WA
thank you for bringing this to our attention, i hope this solves my problem with the noise I hear when gas tank is full.
It's always been there and I took it to the dealer today after finding your post, now I'm waiting on parts. I will let you guys know if this fix the issue.
I did go in with a full tank of gas.
It's always been there and I took it to the dealer today after finding your post, now I'm waiting on parts. I will let you guys know if this fix the issue.
I did go in with a full tank of gas.
09-04-22 | 11:01 PM
#34
Rookie
Joined: Dec 2020
Posts: 32
Likes: 0
From: MN
Noise under rear seat with full tank
Hello,
Do any of you notice some noise under the rear seat immediatly after you fill the gas to full tank. Its like the fuel is bubbling/gargling kind of noise.
It goes away after driving few miles.
is this normal?
Do any of you notice some noise under the rear seat immediatly after you fill the gas to full tank. Its like the fuel is bubbling/gargling kind of noise.
It goes away after driving few miles.
is this normal?
09-05-22 | 01:24 AM
#35
2nd gear
Joined: Jun 2022
Posts: 2
Likes: 1
From: California
This happens when you overfill your gas tank. Always stop filling when you hear the first click on the pump. .
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09-06-22 | 07:48 AM
#38
Rookie
Joined: Oct 2017
Posts: 30
Likes: 11
From: Or
I hate waiting for attendants, especially when short staffed. It creates congestion, can be quite a wait at times. I end up finishing up a fueling since I’m not actually “pumping my own gas”if I’m just putting the nozzle away.
09-06-22 | 07:56 AM
#39
Lexus Test Driver
Joined: Jul 2017
Posts: 8,226
Likes: 2,583
From: NJ
I’m in Oregon which is one of the two States with attendants. Gas is the same price or even lower than adjoining states. In Oregon, they modified the law so that in rural areas and small towns retail self-serve is legal. Diesel (and aviation fuel at airports) is self-serve statewide.
I hate waiting for attendants, especially when short staffed. It creates congestion, can be quite a wait at times. I end up finishing up a fueling since I’m not actually “pumping my own gas”if I’m just putting the nozzle away.
I hate waiting for attendants, especially when short staffed. It creates congestion, can be quite a wait at times. I end up finishing up a fueling since I’m not actually “pumping my own gas”if I’m just putting the nozzle away.
09-08-22 | 09:49 AM
#40
Instructor
Joined: Mar 2015
Posts: 1,048
Likes: 636
From: Vancouver BC
i dont think the knocking is engine knock. there is a TSB for this particular sound. i got mine done and that sound is gone now
https://www.tsbsearch.com/Lexus/L-SB-0046-18
https://www.tsbsearch.com/Lexus/L-SB-0046-18
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