Forrestb

Ok so lady is pregnant. Like really prego and we are on the way to the hospital. We stop at the store car cranks slowly barely starts. Turn off then go to turn back on and nothing. Very dim lights ac blowing not as hard radio cutting out. Ect. Now since ive had the car i have had the vsc abs and vsc light come on randomly with no issues except lights being on. Now the car is dead and everything is dim. Starts with jump. If i let it idle then the battery light comes on. If i give it gas it goes off and everything works as it should. Radio ac yadda yaddda.
Also i have a bad upper control arm bushing that ill be replacing as soon as possible. If that has anything to do with the light's.
We made it to the hospital but barely. I would like to try and figure this out before we have to go possibly with a new born. Lol
I have searched and searched but no solid answer the thread dies or something else happens.

So my question.are these lights somehow tied in with the alternator taking a ****?

I have heard that if your clock resets to 1 then replace your alternator. Clock has held the correct time the whole time

Main question. Alternator, battery, or some other bull**** that i have to fix.
If i get an alternator ill be using the denso from what i have heard they are good.

Mcon

iTrader: (1)

Start with you Alternator, battery and reset the code and see what happen after that. You Alternator is dead and kill your battery.

Mcon

iTrader: (1)

And Yessss, buy the Denso Alternator.

Forrestb

Ok i work at a shop and vave plenty of new batterys avalable and get parts at almost cost so its not to ****ty. But those lights are in tune with ****ty alternators?
BTW no CEL on with this journey so no codes to pull i believe

Forrestb

Also factory alternator i believe. Car has 204xxx miles 99 gs300 certified pre owned

Mcon

iTrader: (1)

Remember, the ECU work with power and if the ECU does not get the power they need and act that way. Also tells you that there is something wrong with the system. 204xxx miles OEM Alternator. WOWWWW Nice.

Forrestb

The charging system? Right i get that. Ok so a little update. Went to start it and nothing. Dim lights. Just clicking.tightened the pos cable and the neg. Cable and Gave her a good old jump start started right up no waiting but struggled a little then let the car idle. It was idling a little low from what i can tell probably 700 rpms. With all 3 lights and the battery light. Turned off ac and the display to my radio rolled all windows down and started driving. No more battery light. About 15 min into my drive i thought what the heck. Then turned on my lights on bright radio on turned up loud then my ac on full blast. Kept driving normal. Sat at idle and it was normal. So i was like oh ok cool just loose cable! Nope. Let the car idle for a minute then shut it off. Went to start it again and started to crank and died... SOUNDS LIKE A BATTERY????? OR STILL ALT PROBLEMS.maybe alt is not putting out the 100 power it is supposed to? Or the battery is just ****. Previous owner bought it from costco in 14' its gotta be one or the other.right?

Forrestb

One last thing i forgot to mention. 3 days ago while doing my diy radio install (its the newest diy radio install) i had unplugged my battery for a while because i was messing with wires and such, after i plugged it back in i didnt turn the car on but out it in the "on" position. Well after 30 minutes of sitting in the garage fine tuning the radio the battery had died. Thus resulting in a jump. It had been driven the 2 days inbetween with no problems

Forrestb

Yep. Just double checked and the alternator is an oem alternator with the lexus stuff on it. Was it replaced by the dealer as part of the "certified pre owned" i dont know. I assume not lol

lexo98

iTrader: (2)

You gotta get someone to check the alternator output and battery. The alternator could be on its way out or the battery might damaged. I had an optima yellow top that shorted out internally and we originally thought it was my alternator. Also make sure the battery connections are clean and tight.
BTW my alternator went out at 240k

Forrestb

checked last night and it said battery bad so we put a new battery in and car started fine no vsc or anything checked the alt and i believe it said bad diode but good everything else? Can i just replace those. I cant remember if diodes were it but when he said it first thing that popped to mind was the connection pieces. But everything else said good alt.
Also is it not weird that when its jumped and i turn the ac off and rev it its fine then i turn my ac back on with everything else and drove for like 2 hours and no issues? The later in the day it got the better it got. Im thinking its just a battery

Forrestb

Replaced battery everything good so far. Battery wise been driving for an hour vsc vsc off and abs on still at random it seems.

Would a vacuum leak somewhere between the maf and the throttle body cause this?

Mcon

iTrader: (1)

Yesss, a small leak can made the vsc, vsc off and abs light on. But first. Check with a scanner what code you have.

Forrestb

No cel on how do i get the codes ran?

Mcon

iTrader: (1)

Put the scan anyway to see if you get a code.