Was told yesterday that the battery on my '18 Explorer/ 36k miles was down to 12.77 volts. Is this commonplace? Seems a bit soon for the battery to go bad. What should the expectation be? I'm a conservative driver. Thanks.
Your explorer, mileage and driving mirrors mine.....2018 Platinum, mileage 34,700. The Platinum is loaded with bells and whistles. My battery seems to be fine. As for Motorcraft batteries, I’ve had them last on average for almost 5 years. The longest I had one last was 9 years on a ‘’99 Cobra mustang.
The battery in my 2017 Limited died nine days past the end of the 36 month warranty time. Ford would not cover it. Newer vehicles draw power when sitting idle due to electronics. The less the vehicle is driven the more the battery is drained. It is a good idea to put the vehicle on a charger from time to time.
I have a 2015 Limited that I had built from the factory because I didn't want a sunroof and I wanted certain options. Once delivered I noticed the stereo system sounded "tinny" and not surrounding most times. But since I didn't drive much I didn't really have time to diagnose what was really going on and I just figured I wasted my money on the top of the line Sony system. Fast forward to a year later one Monday morning I get in the truck for work and nothing works. Open the hood and the positive terminal had literally sunk down into the battery case. Never seen anything like that. Turns out I got a bad battery from the factory. Once replaced, music was 10X better and I realized it was the battery all along.
So yesterday, I noticed my Explorer sounded different when starting...sort of like harder to start than normal as the temps got colder. Since I bought my SUV in May 2018, I was guessing the battery was nearing 36 months since manufacturing.
I decided I was changing the battery to be safe since the temps will continue downward to near 0 degrees this weekend.
The dealership put the battery and electrical system on a tester for about 45 minutes. Results, battery was failing at 35 months, but since I was within the 36 month bumper to bumper warranty.....new battery was free.