One problem related to brake grinding noise has been reported for the 2004 Toyota Sienna. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Toyota Sienna based on all problems reported for the 2004 Sienna.
2004 Toyota Sienna developed problems with the brake equipment. ** answer required*** on four occasions, the brakes had been inspected by mechanics and in some cases reinstalled. The consumer also experienced a grinding noise on two different trips. The consumer was informed that the grinding noise was coming from the rear brakes and did not constitute serious brake problems. The consumer tried to use the hitch mount/bike rack only to find that the hitch would bottom out while entering gas stations or exiting driveways. Also, as an alternative to the hitch not operating properly, the consumer added rear air bags on the suspension system in order to give the vehicle additional clearance and they have failed and or blew out about three times. Other problems: battery failure, rear bumper clip not holding the bumper in place, interior trim piece on seat detaching, grab handle trim piece breaking, and the consumer's daughter's hand had gotten stuck in the automatic door that was not supposed to close due to resistance in the path.