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.
Assisted dying will be offered in Jersey
An assisted dying service will be offered in Jersey to terminally-ill adult residents in unbearable suffering who have less than six months to live.
Attempt to delay food business licensing scheme
Introduction of a licensing system for businesses in Jersey that sell food could be delayed.
Migration to Jersey is 'needed' for 'stable' future
Jersey needs at least 700 people to move to the island each year to 'maintain' the working population.
Jersey U-turns on import ban on used petrol and diesel vehicles by 2030
Jersey's Environment Minister has announced the government will scrap a ban on importing used, non-electric vehicles to the island in 2030.
Search continues for Les Creux Pavilion tenant
Jersey's Infrastructure Minister has announced the government and Jersey Community Land Trust will no longer be working together on a future use for Les Creux.
'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'.
