January 7, 20206 yr Hi all, i,m pretty well versed in mechanics, but just had a new battery installed on my car and they did it with engine running, i presume it is to protect the computer systems, but i have removed the battery before with no issues, any clues ? the new battery was fully charged,
January 7, 20206 yr They do that on some cars where electronic stuff and ECU's get upset. Some cars electronics reset themselves some have to be reset by computer diagnosis.
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