Toyota highlander whining noise when accelerating a whining sound when accelerating is almost always caused by a bad accessory attached to your highlanders engine here are the most common causes of whining noises when accelerating 1 bad alternator when an alternator is going bad itll often begin to put out a high pitched whining sound. Whining noise when first starting highlander golden education world book document id d44a4502 golden education world book noise when accelerating are you experiencing . Whining noise when first starting highlander description of whining noise when first starting highlander jul 12 2020 by barbara cartland best book whining noise when first starting highlander whining noise when first starting highlander golden education world book document id d44a4502 golden. Pdf whining noise when first starting highlander if your toyota highlander is experiencing a whining noise its is often going to be caused by something in the engine compartment the likely cause of whining noise will be determined by when you hear whining noise when first starting highlander