179,975 Miles & Warning Lights Today?

I doubt that the ScanGauge will help the OP since skid control ECU DTC need to be identified.

Patrick,

If that is the case, will Techstream identify the problem, or what does the OP need to properly diagnose it?

Ron (dorunron)

Techstream Lite is the most comprehensive tool available to DIYers but is priced into four-digits so the OP might be better off calling his local dealers to determine which charges the least to retrieve DTC.

As per Patrick Wong, I stand corrected and do respect that. He is much more knowledgeable than myself. With that said, I would suggest you do what Patrick said. Call around and see if you can find a more reasonable price. $120 diagnostic seems high to me, but I am in Texas and you are in Baltimore. Tejas Toyota in Humble, TX charges $85 for their diagnostics. That is the stealer I use when I am forced to rely on Toyota.

I do apologize for any bad information on my part.

Ron (dorunron)

Thank you all for your help. I will shop around and see what happends. All the dealers appear so busy its insane. It's almost like a Doctor's office.. book a week in advance and wait an hour to be seen.
Would trying to clear the codes with the jumper technique be a waste of time at this point?

No, it is not a waste of time. If the fault persists, the DTC will soon be logged again.

I did the jumper on 4-13. All said and done they didn't go away after applying the breaks rapidly on Ready mode.
I got some codes but i don't know if i read them correctly: They went like this
(!) = 3,6,4,1
ABS = 3, 2
VSC = 4,3
Look like valid codes?

I found dealer here that's $105. They said it can take up to two hours for the diagnostic to determine which parts are bad (or what else to charge me for that's not broken).

It turns out it was a front left speed sensor. They asked for $467 to fix it initially, i got them down to $350. Considering i had to pay the diagnostic fee anyway and the part alone (brand new) i could find online was the at least $150. It seemed like the right move. It should be ready at the end of the day and hopefully working 100%.
Thanks for you help!

Hmmmm, I seem to remember someone mentioning that around post 33 or so Hmmmmmm (lol). I'd be willing to bet Firestone messed it up. Was it a defective speed sensor? They rarely go bad (without help). Or was it a connector? Anyway, I'm glad you got it fixed.

They said it was an open circuit in sensor. So the whole thing is getting replaced. They said it happens sometimes due to climate changes (hot to cold, cold to hot). Can anyone say for sure what the cause was?
When i called firestone they denied ever having to mess with that component.

I do not understand your question. If the wheel sensor is replaced and the DTC goes away, then that would appear to be the root cause.

Normally a wheel alignment does not require the wheel sensors to be disturbed. Usually, all that will happen is that the alignment technician will adjust front wheel toe-in. If you are lucky the technician may also adjust front wheel camber. That's it.

An open in the wheel speed sensor sounds like a disconnected/damaged cable, connector. By no means should the technician who performed a wheel alignment should have to mess with a speed sensor but that doesn't mean they didn't. The fact that this occurred after an alignment leads me to suspect the technician accidentally damaged the sensor or its associated wiring. Wheel speed sensors are inherently reliable despite being exposed to extreme temps (due to heat generated by braking). When mounted in a Prius, they are less likely to be exposed to extreme temps due to regenerative braking. This is not to say they never go bad but, it is rare. I would liken it to how often a transformer/inductor goes bad in an electronic circuit (very rare as well).
Most of the time a wheel speed sensor goes bad it is due to someone helping it. Even then it is usually a damaged connector or wiring and the actual sensor itself is in working order but it is unable to transfer the data because of damage to the wiring.
I doubt Firestone would ever admit to causing the damage (if they did). It would be interesting to see the old part and examine it for damage.

Hello guys , sorry for posting on such an old thread but I am need of help, I too am a victim of firestone, my 2006 Prius was none the better except for it chewed up my old tires and since I just bought new tires I wanted to get it done correctly for once. No lights were on the dash except for the "Brake" light which was there when I bought the prius, it was a broken E Brake switch which has now been replaced.

The lights appeared immediately after my lifetime alignment was done so from the sounds of things I am beginning to think that the young 20 year old tech damaged my speed sensor.
The great thing about this is that Firestone is taking full responibilty for the lights, they know and admit they were the ones that caused the problem and apologetically asked me to take it to the dealer to have the codes reset because "our OBD Tool cant reset those codes, only toyota can" and asked me to bring them the receipt and they would reimburse me for all costs

My Stealer wants $120-$160 just to hook it up , what do you guys suggest

It doesn't sound like you have a choice but to take it in.