P/S light + power steering failure
#17
Go get the scanner and see if you can pull codes. Or else take it to an auto store and they can scan your car.
#18
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P/S ECU diagram
#21
Lexus Test Driver
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For everyone in this predicament, check the EPS fuse near the battery. It's 80Amps and non-servicable as it is fusible link. Look in your owners manual for details.
Do a search for PN: 82620-30170 and take note that most will be able to visually inspect the fuse and see that it is A) intact and OK or B) burned open like a standard ATC (Z shape) fuse...
Look here: EPS 80A....
Note: bad angle but these are all good.
#22
Lead Lap
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For everyone in this predicament, check the EPS fuse near the battery. It's 80Amps and non-servicable as it is fusible link. Look in your owners manual for details.
Do a search for PN: 82620-30170 and take note that most will be able to visually inspect the fuse and see that it is A) intact and OK or B) burned open like a standard ATC (Z shape) fuse...
Look here: EPS 80A....
Note: bad angle but these are all good.
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2013FSport (03-07-18)
#23
Lexus Test Driver
iTrader: (2)
I've seen a DIY pop up a time or two. That should be stickied as many seem to blow the EPS fuse during alternator swaps and/or result of dead battery/alternator swap. I'd like to know how they do that? That said we don't even know the fault from original post.
Likely cause is jumping dead car with reversed leads but no one admits that.
Speculation says the EPS unit having an 80 amp fuse and being a DC device, it has some serious circuit protection in the form of fast switching high current diodes. Once polarity reversal occurs, current flows, the diodes reverse bias protecting the EPS unit and BAM, a direct short occurs blowing the 80AMP fuse.
My best guess at least.....
Last edited by 2013FSport; 03-07-18 at 01:35 PM.
#24
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I found some salvage ECUs on Benzeen Auto parts in Rancho Cordova but my mechanic said the ECU is not responding when he tries to program the steering angle/calibrate it.
I contacted Benzeen and since the ECU has a 1 year warranty they sent me out another one. I hope the next one works, otherwise I don't know if my mechanic can troubleshoot it.
#28
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[QUOTE=MikeFig82;10137518]View 2013FSports post. Have your mechanic check the alternator, fuse, and battery. When the power source is interrupted the ECU shuts off the motor relay circuit. These cars do wierd things when threre is a power source issue.
Thank you, I will ask if he checked those.
Thank you, I will ask if he checked those.
#29
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complete part number is 89650-53020
I found some salvage ECUs on Benzeen Auto parts in Rancho Cordova but my mechanic said the ECU is not responding when he tries to program the steering angle/calibrate it.
I contacted Benzeen and since the ECU has a 1 year warranty they sent me out another one. I hope the next one works, otherwise I don't know if my mechanic can troubleshoot it.
I found some salvage ECUs on Benzeen Auto parts in Rancho Cordova but my mechanic said the ECU is not responding when he tries to program the steering angle/calibrate it.
I contacted Benzeen and since the ECU has a 1 year warranty they sent me out another one. I hope the next one works, otherwise I don't know if my mechanic can troubleshoot it.
#30
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My Fix
My power steering goes out but after turning off car and back on, works again until a sharp turn. Found it to be a loose wire to the P/S ecu underneath the battery. Hope this helps.