Crews were called to La Corbière on Sunday afternoon.
All emergency services were understood to be dealing with the incident close to the lighthouse.
It is believed a car went over the cliff edge and landed on its roof.
States of Jersey Police said the road remained open but asked people to avoid the area.
'Momentous' week in Jersey's States
Dignity in Dying campaigners from Jersey and the UK are demonstrating outside the States building, and watching proceedings in person, as the Assembly takes an historic vote on assisted dying.
Plans to charge wealthiest patients for medical travel
Travel from Jersey to the UK for medical treatment could become means-tested.
Railway Walk reopens 'several weeks' ahead of schedule
The Railway Walk path has already reopened after a landslide, despite the government predicting it would be closed for 'several weeks'.
New bar opening at former Rojo and X site to evolve Jersey's nightlife
A new social space and sports bar is opening on Beresford Street, taking a step away from traditional late-night clubbing in the aim of changing with the times.
Former Chief Minister seeks re-election
Former Jersey Chief Minister John Le Fondré will run for election this summer.
Château Vermont to become home to new music campus
Jersey's School of Popular Music is packing up and relocating to Château Vermont this summer, in what will be a 'dream move'.
St Saviour break and entry suspect pictured posing on motorbike
A male suspect has been pictured flexing his arms in a photo, after being linked to a break and entry, where a motorbike and helmet were stolen.
'Overstretched' neurology department following under-experienced managers
Jersey's neurological department is overstretched, with 'dedicated' staff following inexperienced managers, a review has found.
