Renault DUSTER Driver's Handbook Manual page 236

OPERATING FAULTS
On the road
Abnormal white smoke from the ex-
haust
The power-assisted steering be-
comes heavy.
The "2WD" mode and electronic fault
warning lights come on.
The system will not switch to "2WD"
or "4WD Lock" mode. "AUTO" mode
remains active.
5.52
(3/5)
POSSIBLE CAUSES
Mechanical fault: damaged cylinder
head gasket.
or
This is not necessarily a fault.
Smoke may be caused by
regeneration of the particle filter.
Belt broken.
No power-assisted steering oil
Fault in the 4-wheel drive system.
Fault in the 4-wheel drive system.
WHAT TO DO
Stop the engine.
Contact an approved dealer.
Please refer to the information on "Special
features of diesel versions" in Section 2.
Have the belt replaced.
For maintenance operations on the power-
assisted steering, contact an authorised
dealer.
Drive as soon as possible at a moderate
speed to an approved dealer. The problem
may be resolved by replacing the wheels.
Contact an approved dealer as soon as
possible.