Question about 2005 Scion tC
The Scanner tool said it was a left rear speed sensor. I have replaced the hub assembly with new sensor twice now. Scan tool still says it is a bad LR sensor. The connector looks clean. Help ?
Check for corrosion at the wire side of the plug (would be a green dust. You may need to strip back some of the plastic to get a good look at the wire)
Posted on Feb 08, 2014
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Posted on Jan 02, 2017
SOURCE: tire pressure light comes on
You shouldn't be setting the tire pressure to the max inflation pressure listed on the sidewall, that will likely result in uneven tire wear with the center of the tire wearing out prematurely. You should set the pressures according to the listings in the door jam. Most likely 32-34psi. Also, have you checked the spare tire? Some systems monitor and will illuminate the TPMS light if the spare tire pressure isn't within an acceptable range. The spare is often overlooked when checking tire pressures because of a TPMS indicator.
Posted on May 11, 2010
I have the same problem as you, with the same car. It seems to be moisture related. Mine is two months out of warranty, so I inspected the rear wheel speed sensors, like your dealer said. There is a TSB (technical service bulletin) concerning this problem, so Toyota/Scion do indeed know that these sensors are failing. In my case, one of the sensor connectors was broken when the car was assembled, which bent the tiny sensor pin, which broke off while I was attempting to get the connector plugged back into it. I make my living as an electronic technician so I'm not inexperienced with such things. Anyway, rumor has it you're looking at over $700 at the dealer to replace one sensor, since you cannot replace only the sensor. The part (rear hub assy) can be obtained online for $290, plus the wire for $37. All in all, it's a crappy situation. A known problem concerning key safety systems on the car, and Toyota neither issues a recall nor do they extend the warranty.
Posted on Apr 02, 2011
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