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yamarider@tampabay.rr.com

Battery Light 2010 MKX

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Battery intermittent charging 2010 MKX and battery light coming on. Dealer replaced battery, alternator and PCM and still not charging and light coming on? Anyone with any ideas as i cant spend another grand for them to kerp replacing parts!

 

Any help appreciated as im frustrated and dealer no clue.

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Wiring and/or body ground connection.

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As akirby said, wiring, grounds being loose or corroded. Other possibilities include instrument cluster (IPC), faulty alternator and defective PCM. 

 

First, pull the codes. (I assume the garage has already done this). If there are codes it will direct the service technician to the alternator, battery or wiring. 

 

If there are no codes, the service manual takes you to the instrument cluster. From here you must use a scan tool and follow the procedure. It's designed to isolate whether the fault lies with the instrument cluster or PCM. 

 

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New battery, alternator and PCM. 

 

I still would be suspicious of the alternator connections. Broken wire, loose, corrosion. Has to be in this area. 

 

 

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