Seeking Advice on Alternator or Repair - Toyota Yaris Forums

06YarisRS · 09-07-2017, 06:02 AM

Hi.

I have the flickering battery light. My alternator puts out 13.9 - 14 V at idle and no charging problems but the daytime running lights are off. Member WeeYari confirmed that the DRLs can be off with a faulty voltage regulator. I read about the TSB to remove and clean the voltage regulator. Mine was very dirty and a lot of corrosion was present. After removing the regulator from the alternator and a thorough cleaning, I reinstalled and still have the battery light lit and no DRLs. I also cleaned the connector and it had quite a bit of corrosion on it too. The problem here is that if it is wiring/connector, I'm not sure how to test that.

I expect that this alternator is the original. I can pick up a voltage regulator for around $35.00 USD on eBay (knock off, not Toyota - or one of its OEM suppliers - for sure).

Would you recommend replacing the voltage regulator or just replacing with a reman alternator? I haven't priced locally, but CarQuest usually has good pricing and lifetime replacement warranty.

09-07-2017, 06:02 AM	#1
06YarisRS View User's Garage Drives: 06 2ZR Turbo Yaris RS Join Date: Aug 2017 Location: Fredericton, New Brunswick, Canada Posts: 2,384	Seeking Advice on Alternator or Repair Hi. I have the flickering battery light. My alternator puts out 13.9 - 14 V at idle and no charging problems but the daytime running lights are off. Member WeeYari confirmed that the DRLs can be off with a faulty voltage regulator. I read about the TSB to remove and clean the voltage regulator. Mine was very dirty and a lot of corrosion was present. After removing the regulator from the alternator and a thorough cleaning, I reinstalled and still have the battery light lit and no DRLs. I also cleaned the connector and it had quite a bit of corrosion on it too. The problem here is that if it is wiring/connector, I'm not sure how to test that. I expect that this alternator is the original. I can pick up a voltage regulator for around $35.00 USD on eBay (knock off, not Toyota - or one of its OEM suppliers - for sure). Would you recommend replacing the voltage regulator or just replacing with a reman alternator? I haven't priced locally, but CarQuest usually has good pricing and lifetime replacement warranty. __________________ 2006 Yaris 5 Door RS 2ZR-FE (2011 Corolla 1.8L) Swapped, Automatic, T-28 Turbocharged (8 psi), HSD MonoPro Coilovers, DIY W/M Injection, custom 3" cold air intake, custom 2.5" exhaust, TRD rear sway bar, Penguin Garage 13mm spacers (rear), custom Civic front lip, full repaint, Android 6.0 7" touchscreen, Rockford Fosgate speakers, tweeters, NVX underseat subwoofer https://www.instagram.com/2zr_turbo_yarisrs/ Last edited by 06YarisRS; 09-09-2017 at 10:53 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
** Seeking Advice: I Need Frame straightening And what Insurance said + Pictures	yarisa	General Yaris / Vitz Discussion	7	08-18-2017 09:22 AM
Seeking advice head unit replacement - 2006 Yaris NCP91R	aa11	In Car Entertainment + Electronics (audio / video / alarm)	2	01-01-2014 10:54 AM
1st-Time Buyer Seeking Advice	Oh,That Guy.	New YARIS Purchase Forum	20	08-28-2010 12:13 AM
Seeking wheel advice from someone who KNOWS part II...	Chupacabra	Wheels, Tires and Suspension Forum sponsored by The Tire Rack	36	12-23-2008 01:13 PM
Seeking wheel advice from someone who KNOWS	09TRD	Wheels, Tires and Suspension Forum sponsored by The Tire Rack	60	12-19-2008 03:16 PM