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post #1 of 4 (permalink) Old 05-02-2019, 03:13 PM Thread Starter
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RAV4 2010 / battery light stays on

I have a 2010 Toyota Rav4 with over 120,000 Km done.

Today the battery light stays on, my current battery is about 13 months old, so went to the nearby workshop, the Mechanic checked the battery and told me that the battery is fine, and asked me to go to an Auto Electrician to check the Dynamo.

It is worth to mention that I did the 120,000Km service by the Toyota workshop only last month.

Last week, when I start my vehicle I noticed a more than the normal racing car like noise lasted for about 10 minutes.

Any suggestions welcome.
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post #2 of 4 (permalink) Old 05-02-2019, 03:33 PM Thread Starter
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I found this note on another site, and I believe my issue is the belt

Quote:
The alternator can sometimes make a whining sound a few times before it goes--that is when your car battery light comes on as a sign that it is now completely faulty and needs replacing. It is usually the accessory or serpentine belt that is built inside the alternator that makes that type of noise. You need to get your car evaluated by a qualified mechanic and get him to look at your alternator.
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post #3 of 4 (permalink) Old 05-02-2019, 06:30 PM
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I found this note on another site, and I believe my issue is the belt

The light indicates that alternator is not charging the battery and typically it happens due to fault in the alternator itself, not the belt. You might not have a very long range after that, 10 miles tops. Then the engine would 'die' due to depleted battery and you'd need a tow.

2011 RAV4 V6 Limited
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post #4 of 4 (permalink) Old Today, 06:50 AM Thread Starter
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Thanks for your help "max5gen"
Yes, you are correct, the Machanic found out the fault in the alternator itself, and he replaced it with a used working alternator, then the better charging started to work fine, but still the battery light stays on. Then the Machanic tried all possible ways and count not solve it.

Finally, he put a cable between the Alternator's generator connector and to a bolt of the Alternator, I believe it is a grounding cable to stop the battery light stays on. I believe this is not the solution, but he did a workaround to stop the battery light stays on.

Today, in order to check, I pulled out the Alternator's generator connector to see if the battery light come on, but it is not. Meaning with this workaround that he did next time if the alternator is fault the battery light come on, which worries me.

What do you all suggest to permanently solve this issue?
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