The 2004 Toyota Sienna has 13 recalls, the most serious involving accelerator pedals that can stick at nearly full throttle, a fuel tank that can rupture and leak in a frontal collision raising the risk of fire, and a transmission that can roll away from Park without the brake applied.
Two separate issues can trap the accelerator pedal near wide-open throttle: a missing retention clip that lets the floor carpet cover creep under the pedal, and a center console trim panel that was not refastened after a service visit and can work its way into the pedal's path. Either situation can leave the driver unable to reduce engine power. The fuel tank can be damaged in a frontal offset collision, and if fuel escapes near any ignition source, a fire can follow. The transmission shift-interlock concern covers the same failure through multiple filings: the shift lever can be moved out of Park without pressing the brake pedal, allowing the van to roll or lurch into gear unexpectedly.
On the chassis side, the spare tire is suspended under the vehicle by a steel cable, and on Siennas operated in states where road salt is common, that cable can corrode and snap, dropping the spare onto the road and creating a serious hazard for following traffic. This issue is covered by more than one filing, including one that extends to vehicles sold or registered in rust-belt and mid-Atlantic states.
Models with the optional power rear liftgate have their own concern: the gas struts that hold the liftgate open can wear out early and lose the ability to support the door's weight, allowing it to drop several
