It was used to transport John Hammond and Donald Gennaro from the Isla Nublar Heliport to the Brachiosaurus Enclosure and finally to the Visitor Center during the Jurassic Park Incident. After the incident, however, it was abandoned once InGen canceled their plans for Jurassic Park due to the events of the aforementioned incident.
It was encountered again by Zach and Gray Mitchell 22 years later during the Jurassic World Incident inside the Visitor Center, covered in vines and leaves. The two repaired the vehicle using the battery from a nearby wrecked maintenance vehicle and used it to return to Main Street.
Jeep 29 appears in this toy line as an RC Vehicle in its abandoned state, covered in rust and mud splatters. The model is actually a different generation of Wrangler, although it is painted correctly except for the interior and roll bar.