Toyota 4RUNNER 2018 — technical service bulletin
Bulletin T-TT-0487-18 · NHTSA communication 10152108 · issued Mar 8, 2018
Technical service bulletin
communication type
Equipment
component
2018
model years
4
vehicle entries
Official summary
TT: Some vehicles may experience a navigation inoperative condition in which only the compass and latitude/longitude coordinates are shown during PDI or after installing a replacement radio.
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.