It's as it sounds. I bought a 2002 ls430 a couple days back it was running. Since the last guy is a crackhead I stripped the whole interior obviously with the battery disconnected. I went ahead and plugged the battery back up now and it keeps cranking just won't start. I do have a check vsc light on. Any of you guys have experience/advice? Also my obd2 reader ain't connecting at all, it's getting power but can't connect to the car

 

Did you remove the backseat? Is it possible you disturbed the fuel pump or fuel lines under the backseat? I would check if there is fuel supplied to the engine.

 

Try tightening the connection to the battery terminals.

This happened to me after replacing the battery. Car starts, but the OBD-II would not connect to the tablet. I unplugged and plugged back the OBD-II. It connected.

 

I did remove the back seat. Pump wires seem fine, when I try to crank it I smell fuel. The conclusion I came to is VSC light is preventing the car from starting I could be wrong though

 

THats what I thought at first but still doesn't help.

 

Many cars with VSC Off and VSC light are starting and running fine. Even a loose gas cap could cause these lights.

 

Thats good to know. I guess imma have to check for spark air and fuel then

 

Check the battery condition too. Clean the terminals.

 

It's a new battery but yea I'll clean the terminals. I do have to mention once I was working on the car and it just started pouring hard and the battery and ecm got soaked. You think this might be the problem? *Ecm cover was off cuz the crackhead lost it

 

Interesting development. It said VSC ok after leaving the cars power on (no clue why). But now it won't crank lol.

 

How long was the car left powered on? Battery is drained? Not enough juice to crank? Any other error lights in the dash? And, maybe the soaked ECU is fried.

 

Left on for 2 minutes with obd2 plugged in, still wasn't reading. Battery could be low tbh I think there's something draining it (left the battery in overnight). Before all it said was VSC ok the break wear light message wasn't showing. I would think ecu being fried would make it not do anything at all no? I did unplug and air-dry after it got soaked

 

If the battery was connected when it and the ECU were soaked, the damage would be done quickly. If the car battery, fuel, etc., are good, that will point to the ECU.

 

My 2001 LS430UL will not work with the bluetooth obd2 reader as it will not connect and cause all sorts of lights to come on. Techstream works ok but half the time engine light and VSC lights stay on after using and I have to reset the zero point calibration of deceleration sensor in techstream to correct. I have heard this can happen and our cars only properly work with the dealer connections. That obd2 reader you have connected will drain the battery overnight just like leaving a dome light on will. If you are leaving this reader plugged in while cranking the car it could possibly be causing the problem. Try not connecting the reader and disconnect the battery to reset the ecu and don't put reader back in and see what happens. Also with the ecu did you take the metal cover off the top and see water in there? If so and above procedure did not fix then take metal cover off again and look for green corrosion around any parts that can be shorting out.

 

Yup the battery was connected when It got rained on. So junkyard for new ecm?