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

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Old 02-10-07, 03:21 AM
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Axiom2000
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I have a 1999 LS 400, with about 112,000 on the clock. Maintained well and I love the thing still drives and rides like new. Last night when I started her up I got a VSC problem indicator in the Multi-function display. The battery has not been disconnected and pushing the VSC On/Off button has not effect. anyone got any ideas before I head to the dealer with it, 100 miles away?
Old 02-10-07, 03:36 AM
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GRAND_LS 4
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Well, that light can be trip'd easily by any number of sensors. It could be as simple as brake reservoir connector that’s been disconnected, to speed sensors. Lots of systems can cause teh VSC light to come on. You can try and reset the light by unplugging the battery. What is the most recent service you've had done?
Old 02-10-07, 04:05 AM
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Axiom2000
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Oil and Filter about 1000 miles ago and replaced the air filter 3 weeks ago.
Old 02-10-07, 07:53 AM
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Well I plugged in a OBD ll reader and got two codes, P1120 and P1121 I cleared the codes and the light went off and have no further issues for the moment, fingers crossed. the two codes were for Throttle Pedel Position Sensor and Circuits
Old 02-10-07, 09:08 AM
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PureDrifter
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check the TPS, it could be dying.

also check the battery, when theyr about to die its been known to trip the VSC light.
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