1998 Toyota Tacoma Owners Manual - Page 7
1998 Toyota Tacoma Manual
Page 7 highlights
'98 Tacoma (U) Rear differential lock indicator light Cruise control indicator light∗2 ∗1 : ∗2 : For details, see "Service reminder indicators and warning buzzers" in Chapter 1- 5. If this light flashes, see "Cruise control" in Chapter 1- 6. 7