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It is possible that a check engine light on a Toyota Highlander will come on if the coolant level is low. Usually, though, there is another light that will come on that says 'low coolant' on some older Toyota's.

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โˆ™ 2014-09-17 16:18:28
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Q: Will the check engine light on a Toyota Highlander come on when the coolant level is low?
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