CITROEN DS4 Owner's Handbook Manual page 26

Monitoring
Side switch panel
Illumination of the warning lamp indicates the
state of the system.
A. Deactivate the ESP/ASR system.
181
B. Deactivate the parking sensors.
232
C. Deactivate the Stop & Start system.
218
D. Activate the blind spot sensors.
222
E. Activate the lane departure warning
system.
221
F. Deactivate the volumetric alarm protection.
109