Volvo S90 Owner's Manual page 216

LOADING AND STORAGE
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Status indication Reason
Diode not illuminated The socket does not sense that a plug has been inserted.
The socket is not active.
The socket has been active but is now deactivated.
If the problem persists, contact a workshop - an
authorised Volvo workshop is recommended.
WARNING
Never modify or repair the 230 V electrical
socket yourself. Volvo recommends that an
authorised Volvo workshop should be contac-
ted.
12 V electrical socket
12 V electrical socket in tunnel console, front seat.
214
12 V electrical socket in tunnel console, rear seat.
Action
Check that the plug is properly inserted into the
socket.
Switch the car's electrical system to the lowest igni-
tion position I.
Start the engine and/or charge the starter battery.
12 V electrical socket in cargo area*.
The sockets can be used for various accessories
designed for 12 V, such as music players, cooler
boxes and mobile phones.
The socket in the tunnel console can be comple-
mented with a cigarette lighter*.
IMPORTANT
Maximum socket output is 120 W per socket.
* Option/accessory, for more information, see Introduction.