Dear customer, I understand your query, having activated the indicator on the dashboard effectively we are in the presence of a sensory failure, what happens is that when a sensor of the suspension system is activated the automated system is deactivated by precaution, so it remains manual.
Now, in cold weather, it is normal to create humidity in the connections, so the signals from the sensors are erroneous sporadically until the connections are dry.
Also, they can be simply error codes that are generated in the suspension module.
In both cases, it is good to perform a restart and reset of the error codes through a diagnostic equipment, but this equipment can not be generic, must be a citroen software equipment, because only these ones have access to the readings of the suspension modules.
Do you understand me dear customer?