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karenlion1
Lexus ES Battery Keeps Dying
4 comment(s)
karenlion1 (Author)
I haven't had the battery load tested yet, but the error code that keeps popping up is B1242 - Low Battery Voltage. Does that confirm your suspicion about the battery sensor?
adrianhimmel88
Error code B1242 indeed points towards a battery sensor malfunction or a related circuit problem. Considering the age of the vehicle and the mileage, a failing sensor is plausible. I recommend consulting a qualified workshop for diagnosis and replacement.
karenlion1 (Author)
I took it to a local shop, and you were spot on – it was the battery sensor. They replaced it, and the total bill came to 315€. Everything seems to be working perfectly now. I really appreciate you pointing me in the right direction!
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adrianhimmel88
The symptoms you describe suggest a potential issue with the battery sensor. Has the battery been load tested? Can you confirm the error code stored in the memory?