FORD F-250 - Manual (Page 10)

WARNING LIGHTS AND CHIMES
Low fuel
Illuminates as an early reminder of a
low fuel condition indicated on the
fuel gauge (refer to Fuel Gauge in
this chapter for more information).
When refueling, after the light
comes on, the amount of fuel that is added will be less than the
advertised capacity since there is fuel still in the tank. The ignition must
be in the ON position for this lamp to illuminate. The lamp will also
illuminate for several seconds after the ignition is turned to the ON
position regardless of the fuel level to ensure your bulb is working.
Service engine soon
Your vehicle is equipped with a
computer that monitors the engine’s
emission control system. This
system is commonly known as the
On Board Diagnostics System (OBD
II). The OBD II system protects the
environment by ensuring that your vehicle continues to meet
government emission standards. The OBD II system also assists the
service technician in properly servicing your vehicle.
The Service Engine Soon indicator light illuminates when the ignition is
first turned to the ON position to check the bulb. If it comes on after the
engine is started, one of the engine’s emission control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
0
0 0 0 0
0 0 0 0 0
MPH
20
km/h
40
60
80 100
120
140
160
0
10
20
30
40
50 60
70
80
90
100
LOW
FUEL
DOOR
AJAR LOW
RANGE 4 X 4
CRUISE
BRAKE
!
ABS
+ -
L
E
F
H
RPM 1000 X
0
1
2
3
5
6
4
P R N 2 1 8
C
18
H
D
FUEL FILL
SERVICE
ENGINE
SOON
LOW
FUEL
SERVICE
ENGINE
SOON
Instrumentation
10