relay FORD E-450 2019 Owners Manual

TOWING A TRAILER
WARNING: Do not exceed
the GVWR or the GAWR
specified on the certification
label. WARNING:
Towing trailers
beyond the maximum
recommended gross trailer
weight exceeds the limit of your
vehicle and could result in engine
damage, transmission damage,
structural damage, loss of
vehicle control, vehicle rollover
and personal injury.
Your vehicle may have electrical
items, for example fuses or relays,
related to towing. See
Fuses
(page 131).
Your vehicle's load capacity
designation is by weight, not by
volume, so you cannot necessarily
use all available space when
loading your vehicle.
Towing a trailer places an extra
load on your vehicle's engine,
transmission, axle, brakes, tires
and suspension. Inspect these
components periodically during,
and after, any towing operation. Load Placement
To help minimize how trailer
movement affects your vehicle
when driving:
•
Load the heaviest items closest
to the trailer floor.
• Load the heaviest items
centered between the left and
right side trailer tires.
• Load the heaviest items above
the trailer axles or just slightly
forward toward the trailer
tongue. Do not allow the final
trailer tongue weight to go
above or below 10-15% of the
loaded trailer weight.
• Select a draw bar with the
correct rise or drop. When both
the loaded vehicle and trailer
are connected, the trailer frame
should be level, or slightly
angled down toward your
vehicle, when viewed from the
side.
When driving with a trailer or
payload, a slight takeoff vibration
or shudder may be present due to
the increased payload weight.
Additional information regarding
correct trailer loading and setting
your vehicle up for towing is
located in another chapter of this
Owner's Manual. See
Load Limit
(page 99). You can also find the
information in the RV & Trailer
Towing Guide. See an authorized
dealer.
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E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Towing

FUSE SPECIFICATION CHART
Power Distribution Box
WARNING: Always disconnect the
battery before servicing high current
fuses. WARNING: To reduce risk of
electrical shock, always replace the
cover to the power distribution box
before reconnecting the battery or
refilling fluid reservoirs. Note:
If your vehicle is equipped with dual
batteries, disconnecting the primary
under-hood battery does not remove power
from all circuits.
The power distribution box is in the engine
compartment. It has high-current fuses
that protect your vehicle's main electrical
systems from overloads.
If the battery has been disconnected and
reconnected, you need to reset some
features. See Changing the 12V Battery
(page
153). Protected Component
Fuse Rating
Fuse or Relay
Number
Powertrain control module relay.
—
1
Starter solenoid relay.
—
2
Wiper relay.
—
3
Trailer tow battery charge relay.
—
4
Fuel pump relay.
—
5
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Protected Component
Fuse Rating
Fuse or Relay
Number
Trailer tow park lamp relay.
—
6
Auxiliary switch #4 relay.
—
7
Auxiliary switch #3 relay.
—
8
Modified vehicle and stripped chassis run/
start relay.
—
9
Cooling fan relay (6.2L engine).
—
10
Cooling fan (6.2L engine).
50A 1
11
Modified vehicle and stripped chassis run/
start.
40A 2
12
Starter solenoid relay.
30A 2
13
Run start relay.
40A 2
14
Modified vehicle and stripped chassis
battery.
40A 2
15
Auxiliary air conditioning blower.
50A 2
16
Trailer tow battery charge.
50A 2
17
Trailer tow park feed.
Electric trailer brake.
30A 2
18
Trailer brake controller.
Auxiliary switch #1.
30A 2
19
Auxiliary switch #2.
30A 2
20
Fuel pump (6.2L).
20A 2
21
Not used.
—
22
Air conditioning clutch relay.
—
23
Horn relay (stripped chassis).
—
24
Run start relay.
—
25
Not used.
—
26
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E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
27
Back-up lamp.
20A 3
28
Air conditioning clutch.
10A 3
29
Brake on/off switch.
10A 3
30
Cluster battery (stripped chassis).
10A 3
31
Blower motor.
50A 2
32
Anti-lock brake system pump.
40A 2
33
Stripped chassis horn.
20A 2
34
Powertrain control module relay.
40A 2
35
Ignition switch (stripped chassis).
20A 2
36
Trailer tow left-hand side stop lamp and
direction indicator lamp relay.
—
37
Trailer tow right-hand side stop lamp and
direction indicator lamp relay.
—
38
Back-up lamp relay.
—
39
Blower motor relay.
—
40
Not used.
—
41
Diagnostic connector, fleet telematics
modem, and FordPass Connect (stripped
chassis).
15A
3
42
Fuel pump (6.8L).
20A 3
43
Auxiliary switch #3.
10A 3
44
Auxiliary switch #4.
15A 3
45
Powertrain control module keep alive
memory power.
10A 3
46
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Protected Component
Fuse Rating
Fuse or Relay
Number
Canister vent control valve.
Powertrain control module relay coil.
Anti-lock brake system relay coil.
40A 2
47
Trailer tow stop lamp and direction indic-
ator lamps.
20A 2
48
Wiper motor.
30A 2
49
Not used.
—
50
Cutaway.
20A 2
51
Modified vehicle and stripped chassis run/
start relay coil.
10A 3
52
Anti-lock brake system run/start feed.
10A 3
53
Fuel pump relay coil.
10A 3
54
Not used.
—
55
Not used.
—
56
Trailer tow park lamp.
20A 3
57
Trailer tow back-up lamp.
15A 3
58
Not used.
—
59
Not used.
—
60
Not used.
—
61
Auxiliary switch #2 relay.
—
62
Trailer tow battery charge.
30A 2
63
Not used.
—
64
Power point 2 (glove box).
20A 2
65
Power point 3 (cutaway B+).
20A 2
66
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Protected Component
Fuse Rating
Fuse or Relay
Number
Power point 1 (instrument panel).
20A 2
67
Modified vehicle.
50A 2
68
Not used.
—
69
Stripped chassis.
30A 2
70
Not used.
—
71
Cigarette lighter/power point.
20A 2
72
Not used.
—
73
Power seat.
30A 2
74
Vehicle power 1.
20A 3
75
Powertrain control module power.
Vehicle power 2.
20A 3
76
Powertrain control module emissions
related components.
Vehicle power 3.
10A 3
77
Powertrain control module general
components.
Vehicle power 4.
15A 3
78
Engine ignition coil relay coil.
Vehicle power 5.
10A 3
79
Transmission.
Cluster run/start (stripped chassis).
10A 3
80
Not used.
—
81
Not used.
—
82
Fuel pump diode.
—
83
135
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Protected Component
Fuse Rating
Fuse or Relay
Number
Not used.
—
84
Auxiliary switch #1 relay.
—
85
1 Cartridge fuse
2 A1S fuse
3 Mini fuse
Passenger Compartment Fuse
Panel WARNING: Always disconnect the
battery before servicing high current
fuses.
Note: If your vehicle is equipped with dual
batteries, disconnecting the primary
under-hood battery does not remove power
from all circuits.
The fuse panel is located to the left of the
brake pedal and mounted onto the lower
left cowl panel. Remove the fuse panel
cover to access the fuses.
To remove a fuse, use the fuse puller tool
provided on the inside of the fuse panel
cover. Protected Component
Fuse Rating
Fuse or Relay
Number
Inverter B+.
30A
1
Not used (spare).
15A
2
Not used (spare).
15A
3
Not used (spare).
30A
4
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Protected Component
Fuse Rating
Fuse or Relay
Number
Passenger compartment fuse panel.
10A
5
Brake-shift interlock.
Direction indicators lamps.
20A
6
Hazard lamps.
Stop lamps.
Left-side headlamp low beam.
10A
7
Right-side headlamp low beam.
10A
8
Courtesy lamps.
15A
9
Switch illumination.
15A
10
Not used (spare).
10A
11
Not used (spare).
7.5A
12
Mirrors.
5A
13
SYNC
10A
14
Global positioning system module.
Not used (spare).
10A
15
Not used (spare).
15A
16
Door locks.
20A
17
Not used (spare).
20A
18
Not used (spare).
25A
19
Diagnostic connector, fleet telematics
modem, and FordPass Connect (except
stripped chassis).
15A
20
Not used (spare).
15A
21
Parking lamps.
15A
22
License plate lamps.
Headlamp high beams.
15A
23
Horn (except stripped chassis).
20A
24
Demand lighting.
10A
25
Cluster (except stripped chassis).
10A
26
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E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

Protected Component
Fuse Rating
Fuse or Relay
Number
Ignition switch feed.
20A
27
Audio mute (start).
5A
28
Cluster (except stripped chassis).
5A
29
Not used (spare).
5A
30
Not used (spare).
10A
31
Restraints module.
10A
32
Trailer brake controller.
10A
33
Not used (spare).
5A
34
Cutaway run/start.
10A
35
Passive anti-theft system radio frequency
module.
5A
36
Climate control.
10A
37
Stripped chassis #1 run/start.
Not used (spare).
20A
38
Radio.
20A
39
Not used (spare).
20A
40
Radio.
15A
41
Switch illumination.
Automatic dimming rear view mirror.
Power inverter.
Auxiliary switch.
10A
42
Stripped chassis instrument panel
connector #1.
10A
43
Trailer tow battery charge relay.
10A
44
Wipers.
5A
45
Stripped chassis engine connector 3.
Passenger airbag deactivation indicator.
7.5A
46
Windows accessory delay circuit breaker.
30A
47
Delayed accessory relay.
—
48
138
E-Series (TE4) Canada/United States of America, enUSA, Edition date: 201804, Second-Printing Fuses

•
An authorized dealer needs to install
mobile communications systems.
Improper installation may harm the
operation of your vehicle, particularly
if the manufacturer did not design the
mobile communication system
specifically for automotive use.
• If you or an authorized Ford dealer add
any non-Ford electrical or electronic
accessories or components to your
vehicle, you may adversely affect
battery performance and durability. In
addition, you may also adversely affect
the performance of other electrical
systems in the vehicle.
AUXILIARY SWITCHES
For maximum vehicle performance, keep
the following information in mind when
adding accessories or equipment to your
vehicle:
• When adding accessories, equipment,
passengers and luggage to your
vehicle, do not exceed the total weight
capacity of the vehicle or of the front
or rear axle (GVWR or GAWR as
indicated on the Safety Compliance
Certification label). Ask an authorized
dealer for specific weight information.
• The Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulate the use
of mobile communications systems
equipped with radio transmitters, for
example, two-way radios, telephones
and theft alarms. Any such equipment
installed in your vehicle should comply
with Federal Communications
Commission (FCC) and Canadian
Radio Telecommunications
Commission (CRTC) regulations, and
should be installed by an authorized
dealer. •
An authorized dealer needs to install
mobile communications systems.
Improper installation may harm the
operation of your vehicle, particularly
if the manufacturer did not design the
mobile communication system
specifically for automotive use.
• If you or an authorized Ford dealer add
any non-Ford electrical or electronic
accessories or components to your
vehicle, you may adversely affect
battery performance and durability. In
addition, you may also adversely affect
the performance of other electrical
systems in the vehicle. The auxiliary switch option package
provides four switches, mounted in the
center of the instrument panel. These
switches operate only when you switch the
ignition on, whether the engine is running
or not. Ford recommends, however, that
the engine remain running to maintain
battery charge when using the auxiliary
switches for extended periods of time or
higher current draws.
When switched on, the auxiliary switches
provide 10 amps, 15 amps or 30 amps of
electrical battery power for a variety of
personal or commercial uses.
The switches include the fuse and relay kit.
This kit contains the required fuses and
relays that an authorized technician needs
to install into the power distribution box,
located under the hood. Refer to the
instruction sketch included in the kit.
Contact an authorized dealer for service.
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