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12-31-2014, 03:51 PM | #1 |
I've made a post!
Drives: 2007 Toyota Yaris Join Date: Dec 2014
Location: Topsham, ME, USA
Posts: 1
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Voltage Regulator question(s)
Hi all! I found this forum because of searching for battery light issues in my 07 Yaris. I'm not going to bother running down all the problems and differential in detail but I'll list them briefly below.
Yes, I know the above are very typical to the other threads, and I have read them. However, after searching/reading through I didn't find the answers to the below so I appreciate the help. Here are my main questions:
Thank you for your help. |
12-31-2014, 05:11 PM | #2 |
Drives: 2007 Join Date: Feb 2014
Location: motown
Posts: 339
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Only if it's an intermittent problem.
The advantage is that it's cheaper. From experience, check the horn fuse underneath the hood. The cover of the fuse box gives position. 7.5 amp fuse. Norton |
12-31-2014, 05:43 PM | #3 |
Drives: 2('14+'07)MT 3d ,wHandCrWndws! Join Date: May 2009
Location: S.MontgomeryCnty,TX(HoustonMSA) '07=BayouBlue=300,125miles=OrigOwnr '14=ClassicSilvr=29,059miles
Posts: 4,839
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??? I thought replacing the voltage regulator isn't done because (re the location) it doesn't make financial sense...might as well get a rebuilt one that meets OEM specs.
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12-31-2014, 11:32 PM | #4 |
1NZ-6spd
Drives: '05 6-Spd Vitz RS Join Date: Oct 2008
Location: Oshawa, Ontario, Canada
Posts: 2,967
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I believe 2007 was the year of the bad regulator problem. I was allowing water inside the regulator causing it to fail intermittently and causing the light to come on, but the voltage would check out fine until complete failure. Just replace it from another car of a newer year.
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01-01-2015, 12:08 AM | #5 | |
It's the illusion you see
Drives: 07 Yaris Sedan Aero Join Date: Oct 2006
Location: Brossard, QC
Posts: 3,888
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Quote:
That's interesting. I never had issues with my 07, BUT my alternator was replaced in 08 at 55000km under warranty because it was making noise. I have had my 07 since October 2006... |
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01-01-2015, 12:12 AM | #6 |
2ZR swap. DO IT! Ask how!
Drives: 09 Meteoric Metallic HB Join Date: Feb 2011
Location: West Michigan
Posts: 2,333
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My wife's 07 sedan had its alternator go tits up this past summer. Found an 09 at the local salvage yard, no further problems.
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01-01-2015, 01:08 AM | #7 | |
ULTIMATE
Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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Quote:
Typically when the regulator fails, it does so reliably, so the alternator should fail a bench test. The 7.5Amp fuse mentioned above is the ALT-S fuse in the under-hood fuse panel. That fuse feeds the regulator with a reference voltage from the battery. If it is popped the alternator will not work correctly in the car, but will work perfectly on the bench.
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01-01-2015, 10:06 AM | #8 |
Drives: 2007 Join Date: Feb 2014
Location: motown
Posts: 339
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The only symptom I had was the battery light. I had the voltage regulator and battery tested, just to double check my own test. I was afraid of being stranded and bought a used alternator (2012) from a wrecker for less than $40.
Actually found the fuse by accident, thanks to something CT had mentioned. Now that I have a alternator back up, I'm sure the original one will never fail... Norton |
01-01-2015, 03:10 PM | #9 | |
Drives: 2('14+'07)MT 3d ,wHandCrWndws! Join Date: May 2009
Location: S.MontgomeryCnty,TX(HoustonMSA) '07=BayouBlue=300,125miles=OrigOwnr '14=ClassicSilvr=29,059miles
Posts: 4,839
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Quote:
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Tags |
battery light, voltage regulator |
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