Toyota 4 Runner 1996–1999 — technical service bulletin
Bulletin EG01298 · NHTSA communication 603031 · issued Nov 20, 1998
Technical service bulletin
communication type
Engine and Engine Cooling
component
1996–1999
model years
4
vehicle entries
Official summary
Information on oxygen sensor improvement. *yc
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.