mnjeepmale

Have an '08 GS460. Noticed some sort of hiss or air sound under the vehicle when it's running. Comes and goes every few seconds. Didn't know what it was and even looked under the vehicle. So today I was working on installing SiriusXM and had to turn the vehicle on to ACC mode several times. I had the drivers door open and again every time I turned the car on to ACC I can hear a hiss/air sound for a second coming from the drivers side back towards the rear door. Think it's the fuel pump.
Why would it make this noise? Anyone heard of this before? Hope it's not the fuel pump going south as it would add to my list of several things I need to fix on the vehicle..