I changed the VSS at the dealership

Clearly they didn't fix it correctly. Go back to them and complain.

 

I thought about that! Who knows if they just took my money and didn't replace anything.. Do you think that could be the root of the problem?

 

I thought about that! Who knows if they just took my money and didn't replace anything.. Do you think that could be the root of the problem?

It certainly sounds like a VSS problem. Could also be a broken wire to the VSS, or perhaps one wheel's VSS is OK but another one is not.

 

I'll go to the dealership ASAP to have them check that!, and by the Wheel VSS you mean the ABS Wheel speed sensors?

 

and by the Wheel VSS you mean the ABS Wheel speed sensors?

I do. WSS I guess, not VSS.

 

Ok, I'll check those. Thank's for your help. I'll let you know if I was able to fix the problem!

 

I STILL have the problem only thing different is that now the ABS, BRAKE light's stay lighted up ALL the time... dealship did not cooperate saying that they did it and I actually got insulted by the dealership for complaining to the toyota regional office. Check Engine light still shows P0500. I have a theory but have not been able to prove it. The dealership said the ABS Module was bad (without TESTING IT!!!). I think that maybe a Wheel Speed Sensor is bad, there fore tripping the TMPS System ( runs out of the WSS). I'm trying to get someone to connect a ABS Scanner to my van to see if there is a code of any of the wheel sensors. We just got new tires for the van and cleaned the Front WSS but it did not have any effect. If someone has had this problem please tell me what did you do to diagnose/fix it.

Thanks!!!
Hector

 

SOLVED: FIXED: There is a really cheap easy fix to this. I am posting this so late because it seems to be an ongoing issue that I just dealt with. Dealer couldn't figure it out and wanted to charge me $125 hr to call Toyota and run advanced diagnostics.... I found this company that rebuilds ABS computer modules that have known issues.(Toyota wants to sell you the whole abs unit for $2k.) The Sienna is one of them. The module simply unbolts from the ABS block with 4 hex head bolts. Took me 30 minutes and $200 later everything works great. Here is the link, they will even let you return it if it doesn't fix the problem for a 10% restock fee. they also sell on ebay.

Module Repair Pro INC - Module Repair Pro INC

Repair or buy rebuilt: ABS Control Module - Climate control - Light Control Module - Engine Computer - Speedometer - Alarm module - TCM - ECM - ECU - PCM

modulerepairpro.com

 

SOLVED: FIXED: There is a really cheap easy fix to this. I am posting this so late because it seems to be an ongoing issue that I just dealt with. Dealer couldn't figure it out and wanted to charge me $125 hr to call Toyota and run advanced diagnostics.... I found this company that rebuilds ABS computer modules that have known issues.(Toyota wants to sell you the whole abs unit for $2k.) The Sienna is one of them. The module simply unbolts from the ABS block with 4 hex head bolts. Took me 30 minutes and $200 later everything works great. Here is the link, they will even let you return it if it doesn't fix the problem for a 10% restock fee. they also sell on ebay. https://shop.modulerepairpro.com/ABS-Pump-Control-Module-Toyota-Sienna-2005_c2041.htm

FYI FOLKS:

I clicked on that link and found a site that seems to be defunct. The link itself is 404, so I went to the home page. They list NO models of Toyota. There's no drop-down list of models to select, and if you type in Sienna, you get nowhere.

Just to be sure, I checked other makes,and even if they list a model, you eventually get to a dead end. Looks like they are kaput.

 

Thanks for circling back and letting us know how this got resolved. Always nice when people do that!