Nick3gs

i have a 07 gs350 monday morning i woke up to go to work and the car started then shut right off i tried a second attempt and it cranked but died out i tried again and instead of turning on the radiator fan turns on high. i disconnect the battery after and pluged it back in to start and it still wont start only the radiator fan turns on high there also also s check vsc light on after all this no check engine light anyone ever had this problem im running out of ideas my battery is brand new too i just bought the car from the dealer ship in late sept 2015

ibidu1

iTrader: (1)

So your car started ran and then shut off on its own? Sounds like maybe you have a bad alternator, I would take it to a mechanic and have him test it.

Nick3gs

The car won't turn on at all even if I try to jump start it and when it turned on it was only on for less then a sec then shut right off battery is new I had it tested also I running out of ideas and idk why when I try to start it the radiator fun cuts on instead of turning on

ibidu1

iTrader: (1)

Another member had the same symptoms as you are having. It was a bad fuel pump sensor located under the throttle body


https://www.clublexus.com/forums/gs-...-fan-runs.html

Nick3gs

I saw that I'm trying to locate it

SILENTM

Its at the back of the engine on passenger side by the firewall. if you don't have the special tool you will most likely have to remove the intake manifold to gain better access to replace

burny

what is the special tool you reference?

Nick3gs

I still can't find it I was told if I unplug it and plug it back in it should start but I can even find the sensor I reached towards where u said and I can't find it

ibidu1

iTrader: (1)

Im assuming it should be near the fuel rail look for sensors near or on it

Nick3gs

Yea I was too It's just there no room in that area

Nick3gs

Anyone have a pic or a diagram on where to find this fuel pressure sensor

Nick3gs

Still not starting I'm starting to get hopeless

sheriffwoo

It's behind the top back of the engine, under the throttle body. It's about the size of a sparkplug and unscrews from the high pressure fuel assembly in the back of the motor. I forget the wrench size to remove it but you will need small hands and a shortie wrench. The recal is just for a leak and they will not replace the sensor just remove replace gasket and put it back on.
If your cooling fans just run and your engine won't crank I would say is the sensor. You can haggle and buy the part from lexis for $300 and just pay a Mobil mechanic to change it where it broke down, would be the cheapest way. Then take to dealer if recall needed to make sure it's tight. Or tow it to lexus if it needs the recal and see if they can just charge you fo r the part (fuel pressure sensor).

Nick3gs

Thanks Ina try see if I can reach it I was hoping I didn't have to remove the intake manifold I was also told if I unplug and re plug it work again?

sheriffwoo

You don't have to remove the intake manifold, but it would give you more room. I unbolted the throttle body and swung it out of the way. Y ou will need a good flashlight and run your hand down under where the throttle body was. 5he sensor is about the size of a big sparkplug with a pigtail of wire attaching from the back, the threaded part faces forward and screws in the high pressure fuel assembly, not the fuel rail. I has a connector and pigtail you can cut the pigtail wires to make removal easier. You can find a picture online if you google the part number or gs350 fuel pressure sensor.
You can probably reach the connector without removing the throttle body to unplug and plug it in again. Worth a try