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What are the potential reasons for a dead battery issue in a Toyota Highlander?

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3 answers

★ Top Answer
Marian C.

If the alternator in your Toyota Highlander is experiencing problems, there are several noticeable signs to look out for. The primary indicator is a dead battery. Although a dead battery doesn't always indicate a faulty alternator, a faulty alternator is a common cause of a dead battery. If the battery hasn't completely died, you may observe dim or malfunctioning instrument panel lights that flicker and produce noise due to fluctuating power supply. The cost of replacing the alternator, including parts and labor, typically ranges from $300 to $500. While this expense may seem high, it's necessary to address the issue promptly to avoid further complications. Delaying the replacement can lead to battery failure within a few weeks, incurring an additional cost of around $100. If you choose to replace the alternator yourself, you'll need to unbolt the clamps and remove it, as it is conveniently located at the front and easily accessible.

More answers

  • Matilde E

    I replaced the battery in the key fob for my 2010 Highlander, but it still won't start. However, I do notice that the interior lights dim when I try to turn them on.

  • Darren Taylor

    If your battery is losing charge rapidly, it may be time to replace the battery or there could be a problem with the starter solenoid.

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