Toyota Sienna 1999 — technical service bulletin
Bulletin 4612 · NHTSA communication 10015670 · issued Apr 1, 2005
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
1
vehicle entries
Official summary
Diagnostic - engine repair manual correction. 00400-rm657-u. *tt
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.