Why is Knott’s Berry Farm’s Xcelerator roller coaster down?

Visitors to Knott’s Berry Farm recently may have noticed that one of its top roller coasters, Xcelerator, is closed. Why it’s down and when or even if it will be reopened has been a generating conversation on the park’s fans’ social media sites this week.
The official statement from Knott’s is that Xcelerator is closed for maintenance until further notice. No date for reopening the ride is available at this time.
Other roller coasters also closed at this time, inclu