MRGS400nSoCali

I was wondering if someone can help me out with what's going on with my car. Ok, for the record, I have a 98 gs400 with approx. 51k miles. This morning when I was driving my car to work I noticed 3 of the dashboard status lights on - 1. VSC 2. ABS & 3. VSC OFF.

There is nothing that appears to be wrong when I was driving it. I started the car after gettin off work and the same lights appeared as soon as I started the car and again nothing appeared or felt wrong with the car. The braking seems fine and so does the handling of the car.

In terms of related upgrades, I got the Supra TT calipers and rotors with lines installed about 5k miles ago in July. Anyone got any ideas before I take my car to the dealer???

GS430 GUY

You check the gas cap and make sure it's on there nice and tight? If you got gas recently and didn't tighten it, I think the lights you see will pop up. Otherwise let us know what codes the dealer pulls. Good luck

MRGS400nSoCali

Let me check that out, cuz I did fill up last night. I'll update the situation when I get back from the gym.

MRGS400nSoCali

I tried the gas cap thing and all 3 lights are still on. Anyone got any ideas???

mooretorque

bitkahuna had a similar problem, oh, a year or so back.......bad abs sensors were the culprit (actual culprit was the tech who installed his TRD front sway bar upside down, leading to clearance problems between the bar and the front sensors when suspension compressed over bumps).......but I haven't read any posts from other owners of the big brake setups who've had problems similar to yours

probably, any number of glitches can light that combination of warning lights......you might PM DevilDog, who is not only a mod but a Lexus tech/mechanic for more detailed answer, but bottom line is going to be a trip to the dealer.......

///MDex

Whatever you do, DON'T reset the ECU; the codes will be lost.

LexCiting

More than likely you had a misfire in one of your spark plugs. This is a common cause of the VSC/VSC OFF/ENGINE light problem. I had that happen to me also. You VSC is still working so don't worry too much about it. Like Dex said, you rather be safe than sorry so don't reset the ECU by pulling the battery. Go to the dealer, and have it checked out. More than likely that was what it was.

Lee

VVT-i

Probably one of your ABS sensor. If the check engine light come on, you will have the check engine and VSC light, but you got the VSC and ABS light. Go to the dealer.

mumbles

Finally, the voice of sanity!

MRGS400nSoCali

I doubt its a spark plug is misfiring....I changed my plugs about 6K miles ago to the TM plugs. There is no performance difference of the car before and after the lights came on. I made an appt. to take my car in on Saturday....I hope it's not a big deal and just a broken sensor or something {CROSSING FINGERS}.

strshooter

MRGS4...

Same thing happened to me, but my gs was covered by warranty.
Dealer replaced the rt front speed sensor. No further problems.

Hope this helps.

acnup00tl

iTrader: (1)

I had the same thing happen on mine about a month ago. I replaced the brakes and the rotors and the lights went out. I am not sure if thats your problem but it was mine. My brakes had about 5% left on them and the rotors were pretty much fugged aswell.

MRGS400nSoCali

I was driving back from the gym tonight....when I turned on the car, the lights were on as usual. Then, about a mile from the gym at a stop light, I loved down and noticed that the lights were GONE and stayed off till I got home (another 5 miles). I'm gonna see what happens tomorrow morning when I start the car on the way to work. What I'm thinking, I may need to replace the rear pads as they have NEVER been replaced with the car having over 52K miles on it.

MRGS400nSoCali

Would having the rear pads been worn too much cause those 3 lights to go on???

mumbles

Nope. I'd listen to VVT-i on this one (since he's a Certified Lexus Mechanic), and have the dealer check out the speed sensors. This same thing happened to me, dealer induced unfortunately. They pulled a wheel to do some maintanence, and in the process bunged up the drivers front sensor which resulted in the same three lights you have. The really bad thing was that they gave the car back to me like that