LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

VSC and BRAKE problem

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Old 06-18-10, 04:23 AM
  #16  
billydpowe
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go by Autozone and see if it has any codes (it is free), check all battery connections (clean), check gas cap, check for low brake fluid,
Please note that an engine malfunction disables the VSC as a failsafe measure.
If you have 1 low tire, or 1 abnormally worn tire it will play havok on the VSC.
It's related to the ABS and the individual wheel speeds....1 wheel not registering the exact right speed will kick the lights on.
When I say exact i mean it, 1% difference is enough.

By all means check the codes...but check the tires too.
mine had codes 1345 & 1354 .
Old 06-18-10, 10:44 AM
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silos5
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thanks billydpowe!

I was rolling my fenders today and I had to take front calipers off, I noticed I didnt tighten bolts well last time when I was changing suspension parts May be this was a broblem. And yes, I now remebmer My front right tyre was a bit empty. Gonna fix this tomorrow and test drive it.
Old 11-20-10, 09:53 AM
  #18  
billydpowe
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Originally Posted by silos5
thanks billydpowe!

I was rolling my fenders today and I had to take front calipers off, I noticed I didnt tighten bolts well last time when I was changing suspension parts May be this was a broblem. And yes, I now remebmer My front right tyre was a bit empty. Gonna fix this tomorrow and test drive it.
did you get the VSC light off??
Old 11-21-10, 01:49 AM
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skperformance
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if its from take off I would say rear hubs /bearing ,. check the code .
Old 11-21-10, 06:51 AM
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silos5
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what I´ve noticed: VSC light comes only when I drive slow on uneven servise (bad road).
Brake pedal shakes less and less.
these things doesnt bother me.
the only one that is left is that sometimes when I press the gas the VSC cuts the power and a "sliding car" signal comes. But I´m already used to turn the VSC off then I drive. I think the mechanics screwd some sensor when they changed the diferensial oil, or somewhere else
Old 11-21-10, 02:06 PM
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PureDrifter
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what tire sizes are you running...?
Old 11-21-10, 09:22 PM
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bornpeace
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I had the same problem(trac will flash and VSC lights come on and the car will not go for few second). Solution is to check ur speed sensor, a small stretch of the wire can cause that problem. Assuming you disturb the sensor when you change your suspension. To know for sure if is the sensor, pull the ABS fuse in the engine bay fuse box. Then drive the car and see if the same problem happen. Remember when you take out the fuse ABS and VSC lights will stay on all the time. You may have to replace the sensor if is the problem.
Old 11-22-10, 07:21 AM
  #23  
silos5
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Originally Posted by PureDrifter
what tire sizes are you running...?
225/35 and 245/35 on 19s...I know, they are a bit smaller then the OEM and this can be the problem
Old 11-22-10, 02:13 PM
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if you throw the stocks on and its fine, it's not the tire sizes, then throw a VSS at it.
Old 11-23-10, 10:09 PM
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whit3b0y
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Originally Posted by silos5
225/35 and 245/35 on 19s...I know, they are a bit smaller then the OEM and this can be the problem
i got 215/40 and 235/35 19's and i dont think that is the problem.

check and see if the brake sensors have been wet. We had a big water overload a few weeks ago and i drove through standing water during this time.
about a block later the car went to limp mode. i cleared the code and nothing came up, car was fine. For 2 days, same thing, i cleared the code and its all good now
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