Electrical issues after replacing the starter with the battery connected

2014 FORD FIESTA
120,000 MILES • 1.0L • 3 CYL • TURBO • 2WD • MANUAL
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CANADIANTACTICS
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When changing my starter, I forgot to disconnect the battery and created a spark at the starter. After that my airbag light came on. Then a few days later my wipers and wiper fluid stopped. Then a few days after that my reverse lights stopped. Then a few days later my heated seats stopped.
Apr 10, 2022 at 1:10 PM
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STEVE W.
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From the description it sounds like it could be a bad ground that all of them share through the BCM and an individual ground. Take a look at the attached diagram, Grounds 201 and 203 are both on the left side of the dash and have multiple wires going into a single terminal. Those connections commonly start to fail from internal corrosion.
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Apr 10, 2022 at 2:23 PM