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

lights pulsing after cool start up.

Old 10-11-11, 03:09 PM
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rome99LS
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Default lights pulsing after cool start up.

For some reason the last couple of days when I crank my car up from a cold start all my lights starts pulsing almost like dimming in and out and won't stop until its halfway warmed up...anybody have any clues wat it could be??? I had the altenator replaced right when i bought the car. Help!!
Old 10-11-11, 05:47 PM
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PureDrifter
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could be the battery weakened or dying, the alternator's voltage regulator dying (if you replaced with a rebuilt unit, these are often overlooked), or bad grounds.

is there idle surge when you start it up?

what year?? Usernames aren't always current.

Last edited by PureDrifter; 10-12-11 at 02:37 AM.
Old 10-11-11, 10:43 PM
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whit3b0y
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myth of vsc being related to battery issues. If you start to have vsc issues look into battery, have your alternator tested again.
Old 10-12-11, 08:07 AM
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rome99LS
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Originally Posted by PureDrifter
could be the battery weakened or dying, the alternator's voltage regulator dying (if you replaced with a rebuilt unit, these are often overlooked), or bad grounds.

is there idle surge when you start it up?

what year?? Usernames aren't always current.
It's a 99...with 115,500 on it.
I'll have the altenator checked again.
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