One problem related to engine grinding noise has been reported for the 2009 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Toyota Highlander based on all problems reported for the 2009 Highlander.
Vvti cam gear issue, making grinding noise. Vehicle just hit 60,000 and out of warranty. Earlier TSB from Toyota didn't cover this since the vehicle didn't show any signs.