Please help
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1st Gear
Joined: Dec 2024
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Please help
Hello everyone I just got a 2015 f150 lariat last month and I’m having battery drain issues. I’ve replaced the battery twice now. Now the sunroof and windows and rear window has no power. Please help me fix this it’s driving me absolute crazy. Thanks everyone
Lead Driver
Joined: May 2015
Posts: 5,889
Likes: 360
From: Mts. S. of San Francisco
How are you testing for drain?
If you can get your hands on a DC ammeter with a clamp, charge up your battery with the negative lead disconnected. Re-connect it, and put the ammeter clamp on the positive lead. The current should be well under an amp; probably just a couple hundred milliamps. The exact drain is somewhat subjective, but that will get you in the ballpark. If it is over an amp, then I would start pulling fuses until you find the culprit.
If you can get your hands on a DC ammeter with a clamp, charge up your battery with the negative lead disconnected. Re-connect it, and put the ammeter clamp on the positive lead. The current should be well under an amp; probably just a couple hundred milliamps. The exact drain is somewhat subjective, but that will get you in the ballpark. If it is over an amp, then I would start pulling fuses until you find the culprit.
Official Ford Pro Rep
Joined: Feb 2023
Posts: 1,352
Likes: 1,286
Good afternoon! We'd like to look into your battery concern for you. Feel free to send us a DM with your vehicle's VIN and mileage.
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