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

95 LS400: unknown (to me) warning light on dash

Old 06-03-10, 11:05 PM
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renato902
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Default 95 LS400: unknown (to me) warning light on dash

Hey,

About 2 weeks ago, a light came on in my display.

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I don't know what it is because when I bought my car, it was missing the owner's manual, so I cannot look up what that light signifies. Can anyone enlighten/inform me as to what this warning light can be ?

P.S.: I think it has something to do with the brakes (specifically the parking brake shoes) but that's only a hunch Also, this weird squeaking noise is coming from the rear right brake assembly.. a stuck caliper maybe ?
Old 06-04-10, 04:28 AM
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bmoore
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It's your brake pad warning light. Your front or rear pads (at least) need to be replaced.

No immediate problem, but get it within ~500 miles.
Old 06-04-10, 07:53 AM
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renato902
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Hmmm... I just changed all 4 not that long ago. I'll check them today, but I doubt theres anything wrong with my pads I think I have a shot rear caliper and it's giving me a warning, but not entirely sure. More help would be appreciated
Old 06-04-10, 07:55 AM
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LiCelsior
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the sensor that goes into the pad itself is probably faulty. your either frayed it or it broke off.
Old 06-04-10, 08:53 AM
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I'mStock
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My passenger front sensor is broken, resulting in that light always being on. Anyone know where to get a replacement (no junkyards around here.)
Old 06-04-10, 09:37 AM
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Thermactor
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Originally Posted by I'mStock
My passenger front sensor is broken, resulting in that light always being on. Anyone know where to get a replacement (no junkyards around here.)
you could always buy one from the dealer, or just short the two leads together and check the pads yourself every year.
Old 06-04-10, 09:48 AM
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billydpowe
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Originally Posted by Thermactor
you could always buy one from the dealer, or just short the two leads together and check the pads yourself every year.
If you are a DIY, that is the simplest remedy, pads should last 30-40K
Old 06-04-10, 12:01 PM
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i did that!

dont need no stinking pad sensors.
Old 06-04-10, 11:02 PM
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renato902
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Originally Posted by PureDrifter
i did that!

dont need no stinking pad sensors.
agreed i did the same thing lol
Old 06-05-10, 07:21 AM
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Originally Posted by billydpowe
If you are a DIY, that is the simplest remedy, pads should last 30-40K
OEM brake pads on an LS400 can last much longer than that. I had the brake pads on my 2000 LS400 replaced for the first time at just over 71,000 miles when the wear sensor triggered the dash warning. I had the rear brake pads replaced for the first time a couple of months ago during the 120,000 mile service -- the rear pads could have gone longer and the wear sensor hadn't yet "hit" but I had them replaced for my convenience rather than make another trip to the repair shop a few weeks later.

The OEM brake pads on the 90 LS we owned from new to 2003 got similar long life from brake pads -- far longer life than the brake pads on any of the expensive European cars we've owned.

Pad wear sensors for the LS400 don't cost all that much and can pay for themselves in that they can help maximize intervals between brake pad changes. More importantly, pad wear sensors can help prevent unsafe conditions when a person fails to manually monitor brake pad thickness.
Old 06-05-10, 08:19 AM
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renato902
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Thank you and I appreciate the very detailed and clear response Kansas Serves me of great use
Old 06-05-10, 10:12 AM
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Is there a sensor on the rear brakes? I didn't think there was.
Old 06-05-10, 02:23 PM
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there is .
Old 06-05-10, 02:32 PM
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Originally Posted by amcdonal86
Is there a sensor on the rear brakes? I didn't think there was.

There are brake wear sensors on the right side brakes front and rear on the 98-00 LS. The diagram I'm looking at shows a brake wear sensor on the 95-97 LS right rear.

The first model year for brake wear sensors on U.S. spec LS400's was 1993. I was kind of stunned when I found out the 90 LS I purchased new didn't have brake wear sensors. Having owned two Mercedes sedans (450SEL and a "cheap" 240D) with brake wear sensors, I had assumed that all Lexus cars would have them.
Old 06-06-10, 08:43 AM
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Wufen
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well i think something needs to be replaced but when i got a flat, someone disconnected the sensor while changing it. i just plugged it back in and the light went away.

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