Using the 115 V socket in the rear
DANGER Risk of fatal injury due to damaged connecting cables or sockets
If a suitable device is connected, the 115 V socket will be carrying a high voltage. If the connecting cable or the 115 V socket is pulled out of the trim or is damaged or wet, you could receive an electric shock.
Use only connecting cables that are dry and free of damage.
When the ignition is switched off, ensure that the 115 V socket is dry.
If the 115 V socket is damaged or gets pulled out of the trim, immediately have the socket checked or replaced at a qualified specialised workshop.
Never plug the connecting cable into a 115 V socket that is damaged or has been pulled out of the trim.
DANGER Risk of fatal injury due to incorrect handling of the socket
You could receive an electric shock:
if you reach into the socket.
if you insert unsuitable devices or objects into the socket.
Do not reach into the socket.
Only connect suitable devices to the socket.
Requirements:
Only connect devices with a suitable plug which conforms to the standards specific to the country you are in.
Only connect devices up to a maximum of 150 watts.
Do not use multiple socket outlets.
Open flap 
.
. Insert the plug of the device into 115 V socket 
.
. When the on-board electrical system voltage is sufficient, indicator lamp 
lights up.