fuse box Citroen DS3 DAG 2009.5 1.G User Guide

Practical information
Battery
Procedure for charging your battery when it is flat or for star ting the engine using another battery.
The battery is located under the bonnet. To gain access to it:  open the bonnet using the interior release lever, then the exterior safety catch,  secure the bonnet stay,
 remove the plastic cover by pulling on its grip for access to the two terminals,  unclip the fusebox to remove the battery, if necessary.
Access to the battery
 Connect the red cable to the positive terminal (+) of the flat battery A , then to the positive terminal (+) of the slave battery B .
Starting using another
battery
 Connect one end of the green or black cable to the negative terminal (-) of the slave battery B .  Connect the other end of the green or black cable to the negative terminal (-) of the flat
battery A .
 Star t the slave vehicle.  Operate the star ter of the broken down
vehicle and let the engine run.  Wait until the engine returns to idle and disconnect the cables.