I am trying to troubleshoot an issue I have been having and this thread seems to be the closest thing to helping. There has been a noise behind the dash/firewall that comes up every once in a while when I drive to work in the morning, and I am not sure what it is. Here is a video of the noise,
2002 4Runner Intermittent Noise - YouTube
Then when I pulled into my parking spot at work last week this warning came on with the warning beep.
2002 4Runner TRAC VSC ABS Lights - YouTube
Any ideas what the noise is? I thought it might be brake booster so I flushed brake fluid but the noise came back this morning, and it is louder than the noise that the brake booster makes when it comes on.
Tonight when I parked in the garage there was pulsing sound coming from the car and turned out to be the gas cap depressurizing, a sound I have never heard before, could that be related? I have never replaced the gas cap on this 255k mile truck.