Volvo 240 Owner's Manual page 12

Volvo 1990 240 Model
If the light comes on (or stays on after the vehicle has started), the Engine Check diagnostic system has
detected a fault. Drive to an authorized Volvo dealer for inspection.
Quartz crystal clock
To reset the hands, push in the reset knob and
turn.
pg. 13 Oil pressure gauge, Voltmeter.
Oil pressure gauge (accessory)
The oil pressure gauge indicates the pressure of the
oil in the lubricating system of the engine. The
pressure is dependent on the speed of the engine,
the oil temperature and the viscosity of the oil.
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Ambient temp. gauge (accessory)
An electronic thermometer that indicates ambient
temperature just above the road surface. Warns you
of icy road conditions.
Voltmeter (accessory)
The voltmeter indicates the voltage in the
electrical system and thereby also the state of the
battery. While the car is being driven the pointer