Connecting the battery for trickle charging
WARNING: This page is about a different car, the 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.
A suitable battery charger must be connected to the vehicle electrical system when performing the following tasks. All unnecessary electrical loads must be switched off .
When working on the vehicle for more than 15 minutes.
When running diagnostics using the Porsche System Tester.
When adjusting the headlights.
When working on or with the Infotainment system.
If the doors, bonnet and rear lid are open for a long period of time or if these components are actuated frequently.