![]() None of the battery manufacturers warn consumers or technicians about the possible risks of disconnecting or replacing a battery on their websites. ![]() ![]() But except for shock hazard’s warnings on high-voltage hybrid batteries, no such warnings are posted anywhere. On vehicles with known battery-disconnect issues, there should be a big red warning label on or near the battery to warn people. There may be some cautions in the factory service literature, but it is often hard to find, even if you know where to look for it. Most vehicle owners’ manuals don’t offer any precautions about disconnecting or replacing the battery. Unfortunately, I have never found such a list. One of the things I wanted to do with the article was list all of the vehicle applications that have known battery-disconnect issues. Disconnecting or replacing a battery on a computer-equipped vehicle may cause starting, driveability and a number of other problems, including loss of air conditioning, power accessory functions (door windows, seats, sunroof), false warning lights, even damage to certain electronic modules! So, if you are replacing or disconnecting a battery for any reason, proceed with caution.
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