CITROËN C4 PICASSO Handbook page 138

Driving
Operating faults
The various alert situations are described in the table below.
In the event of a fault with the electric parking brake it is recommended that you contact a CITROËN dealer or a qualified workshop without delay.
Situations
Display of the message "Parking brake fault" and this
warning lamp:
Display of the message "Parking brake fault" and these
warning lamps:
Display of the message "Parking brake fault" and these
warning lamps:
Display of the message "Parking brake fault" and these
warning lamps:
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Consequences
- Automatic release is not available.
- If you attempt an automatic release, a help message is displayed on acceleration
when the parking brake is applied, prompting you to use manual release.
- Secondary braking does not have full power.
- If automatic release is not available, a help message is displayed on acceleration
when the parking brake is applied, prompting you to use manual release.
- Automatic application is not available: use the control lever.
- The electric parking brake can only be used manually.
- If automatic release is also not available, a help message is displayed on
acceleration when the parking brake is applied, prompting you to use manual
release.
- If manual application and release do not work, the control lever is faulty.
- The automatic functions must be used in all circumstances: they are
automatically reactivated in the event of failure of the control lever.
- You can no longer immobilise the vehicle with the engine running.