I just bought a new [alternator](/topics-alternator-hyund...

I just bought a new [alternator](/topics-alternator-hyundai/) but my battery light is still flashing Mechanic's Assistant: Have you tested the battery? Have you tried testing the alternator? Yes Mechanic's Assistant:<...

I just bought a new [alternator](/topics-alternator-hyundai/) but my battery light is still flashing Mechanic's Assistant: Have you tested the battery? Have you tried testing the alternator? Yes Mechanic's Assistant: What is the make/model/year of your car? Hyundai sonato 2015 Mechanic's Assistant: Are you fixing your [Sonata](/topics-sonata/) yourself? What have you tried so far? No a mechanic Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? And a steering wheel symbol comes on with an exclamation mark comes on and blink

Automotive Expert
Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.

Ok thanksNo thanks text is fineHello are you checking for a solution to the problem
Automotive Expert
Thank you for your reply and that information as this does help me better understand the situation. I’m sorry to hear you are having this problem. I know this can be frustrating. Please give me one moment to type out some info for you. I’ll be right back! A live optional phone call will be automatically offered by JustAnswer, you can accept or if you decide to decline we can continue with text until you feel the live call would be better suited to you. I will try to help you on this here Please ignore call request not needed here What engine is in it so I can look up the correct schematic for it ? and what is the mileage on it now ? These Sonata have a Computer-controlled Altenator ,so if the battery is new, alternator new and wiring battery cables checked for the good connection then that will leaves PCM or wiring to it defective

2.4The battery isn't new but the alternator is
Automotive Expert
Please understand, that the reply speed of my answers, depends on your internet speed and website traffic but I m with you ok thank you for the info Please click on link to view the pdf file on the schematic system on your vehicle that I have highlighted let me know if you can view it and we continue

2.4 engine Over 100 thousand miles The battery is not new but it’s not very old Either but the alternator is brand new
Automotive Expert
You ned to hook up a voltmeter and measure at battery ,while car running and all loads on,like headlight,radio ,flasher ,ac ect and see if you reading 14 plus volts ? and then remove battery and test it underload for holding 12 volts

Ok I will try that but what is that isn’t the problemI don’t understand that schematic system
Automotive Expert
if the battery checks out good then you will need a good shot with a tech that knows about electrical and electronics testing That can do a continuity test, short and open-wire test between the alternator and the PCM( vehicle computer) if that checks out,then he moves to pining out the PCM , and determine if it is PCM issue with the circuit I sent you and the know-how,they can test correctly and be accurate on what to replace

Oh ok is it possible that my motor is bad
Automotive Expert
The schematic will need a technician & some prior know-how, unfortunately You can probably do the voltmeter part by yourself, the other will need a shop or a tech that can do it for you ,it has to be a repair shop, not like jiffy lube or Goodyear service stations these will not know how to do this, they pretty much parts replacer at a good repair shop, this can be done for about 1 hr labor , Maybe $100 The motor is bad ,not for this issue, the motor still runs and you can start it now correct? and you only have the flashing light? did you have engine issues prior or all was good

The engine light came on before but it went off Then the steering wheel symbol with the exclamation point came on with the flashing battery lightWhat do you mean it’s bad
Automotive Expert
yea that is normal when the engine system sees a low voltage so i doubt you have engine problems, you just need to have what i told you prior checked and then after fixing the charging issue,they can check if the check engine light comes back

Ok thank you
Automotive Expert
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