Yaris has fuel pressure test built in???

[auxmike]

Has anyone actually heard this test happen?
I can imagine this will be a wonderful moneymaker for Toyota as the hoses get older and leak as the car ages......

[Brian]

I remember seeing that when I first bought my Yaris. I've never heard it though.

[CTScott]

I hear it almost every night. I have to walk through the garage to go to and from my office. The first time it did it (probably the second night I had the car), I thought something was wrong with the car (and of course I hadn't RTFM yet). I did a quick search on here and found out about the pressure test.

[mikenacarato]

i was changing my exhaust one time when that came on and i jumped out from under the car so quick...lol im glad i know what it is now.

[b_hickman11]

I had this system on my 05 Taco so I would assume this is common on all of Toyota's vehicles produced at least in the last few years.

[BLH]

It also tests the evaporitive fuel system amd if you leave the Gas Cap loose. It will flag a "Check Engine Light"

[YarisSedan]

All vehicles have this now days. Evaporative system is the sealed system from your gas tank to your engine. It constantly self checks for leaks. Cause you wouldnt want a cracked evap hose leaking fumes and someone walks by your car smoking a cigarette. Typically evap hoses are made of a special material much stronger than regular heater hose. They last 15 years or more.

[BLH]

It also tests the Evaporative fuel system. If you leave the gas cap loose. A 'Check Engine Light' and error code will be stored.