Good morning, below is the procedure for locking the parking brake on the Citroen C4 picasso

The unlocking crank(1) is integrated in the vehicle's toolbox

-vehicle with metal suspension: the box is located behind the seat on the front right-hand side

-vehicle with air suspension: the box is located in the boot, under the seat on the left-hand side

1)Retract the seat on the front left side

2)remove the mat

Remove the protection(1) and cap(2)

3)insert the release crank(1) all the way into the release tube(3)

4)turn the release crank(1) clockwise as far as it will go

5)pull the release crank(1) out of the clamping tube(3)

Refit the cap(2) and protection(1)

• photo1-2-3