Fix It Finder

2022 Toyota Corolla, Repeated Alternator Failures???

Sparky's Answers · 1K views · 8:59

Skill Level

Intermediate

Time Required

Half day

Estimated Cost

$50–200

Equipment

Toyota Corolla 2022

Permit Required

No

Tools Needed

socket set, wrenches, multimeter, battery terminal cleaner
This 2022 Toyota Corolla came in with a complaint of repeated alternator failures or it was never a faulty alternator to start with. In the end the problem was originally a faulty battery which had been replaced. However when it was replaced all of the related terminals were not properly tightened. This loose connection led to repeated alternator failures. I was just lucky that I saw the problem and fixed it before replacing the alternator again. I also found that the alternator bolts had never been fully tightened either.