S90 Ignition modes | Volvo Support UK

The vehicle's ignition has 3 modes: 0, I, and II that can be used to operate various functions without starting the engine. The following table shows examples of which functions are available in the respective modes.

Mode	Functions available
0	The odometer, clock and temperature gauge are illuminated Power seats* can be adjusted The power windows can be operated The 12-volt socket in the cargo compartment can be used The center display is activated and can be used The infotainment system can be used for a limited time In this mode, certain functions can only be used for a limited time to help minimize battery drain
I	The moonroof, power seats/windows,12-volt sockets in the passenger compartment, Bluetooth, navigation system*, climate system blower, windshield wipers can be operated The infotainment system will start (if it was started when the ignition was switched off)
II	The headlights illuminate Warning/indicator lights illuminate for 5 seconds A number of other functions will also be activated. However, the heated seats* and heated rear window functions can only be activated when the engine is running. This mode should only be used for very short periods to help avoid draining the battery.

Selecting an ignition mode

P5-1507-Start/switch off engine — Start knob in the tunnel console (generic illustration)

Ignition mode 0: unlock the vehicle and keep the remote key in the passenger's compartment.

Note

To access ignition modes I or II without starting the engine, the brake pedal must not be depressed when these modes are selected.

Ignition mode I: Turn the start knob to START and release it. The knob will return automatically to its original position.
Ignition mode II: Turn the start knob to START and hold it there for approx. 4 seconds. Release the knob.
Returning to ignition mode 0: To return to mode 0 from mode II or I, turn the start knob to STOP and release it.