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Old 02-12-2015, 09:53 PM   #1
DiBo
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2000 Sienna abs issues

Hey folks,

I recently got my back drums and shoes replaced on my 2000 Toyota Sienna. A few weeks after the brake job the abs system went on for no reason when braking. The abs brake light and tire pressure light came on and stayed on constantly. I brought the van back in to get the brakes looked at, and it was determined that the brake cylinder was bad. So the cylinder was changed , the brakes work fine but the abs and tire pressure light are still constantly on. The other night the abs went on for no reason again when braking (but not as bad as before). It's an old van with lots of miles on it. I was wondering if it is possible to just disconnect the abs system. Is it possible ? if so how is it done? What would the root cause of my abs system to go on for no reason?

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Old 07-08-2015, 06:11 PM   #2
Jukeman
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Re: 2000 Sienna abs issues

Remove the fuse or rather relay box in the fuse box. There should be a map on the inside of the fuse box on the drivers side of the engine compartment labled VSC.
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Old 07-09-2015, 02:43 PM   #3
Brian R.
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Re: 2000 Sienna abs issues

If the problem still exists, take your vehicle to a Toyota dealer and have them run a diagnostic on the ABS system.
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Old 08-24-2015, 09:10 PM   #4
wiswind
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Re: 2000 Sienna abs issues

To expand upon what Brian has said.
There are code(s) stored that identify what the problem is.
Our tire pressure monitoring is done through the wheel speed sensors, so a problem with a wheel speed sensor will throw the tire pressure monitoring system off also.

The rear wheel speed sensors are mounted inside the rear hub...which includes the rear wheel bearing.
These have been known to fall out...(happened to me).
Some have glued the sensor back in.
The sensor replacement requires that the whole rear hub be replaced.....not a big deal except that the bolts holding it in place can be quite a challenge to get out.
I had a shop replace mine.

Front wheel sensors can be replaced.

HOWEVER.....it is important to get these ABS codes read in order to determine what the problem is....though a rear wheel speed sensor hanging down by its wires is pretty obvious.

In my case.....my independent mechanic connected his code reader....saw the code indicating exactly what the problem was.

My point being.....better to have the code(s) read vs spending money on parts/labor that you don't need to replace.


With the ABS light lit, the ABS system is inoperative.
You have brakes as normal....but your ABS will not activate if one of your wheels locks up.
Many of us have been driving since before ABS was being put on our vehicles.
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