(Boost
Setting
continued)
[
b
.I
],
during
a
braking
event,
the
power
automatically
starts
out
at
approximately
13%
of
the
power
setting
and
increases
with
deceleration.
With
the
boost
on
level
2,
[
b
.2
],
or
with
the
boost
on
level
3
,
[
b
.3
],
during
a
braking
event,
the
power
automatically
starts
out
at
approximately
25%
of
the
power
setting
and
increases
with
deceleration.
Some
cases
where
you
might
want
to
use
the
boost
button:
•
You
like
the
trailer
braking
to
‘LEAD’
the
tow
ve
hicle’
s
braking
•
Towing
a
full
vs.
empty
trailer
•
Degraded
brake
performance
(most
electric
brakes
require
manual
adjustment
-
see
Appendix
A
or
a
dealer
for
adjustment
or
repair)
NOTE:
Boost
not
intended
to
be
used
to
take
place
of
trailer
brake
adjustment
or
repair.
See
the
chart
below
for
recommended
“Boost”
settings
(indicated
with
X
)
for
typical
Trailer
to
Vehicle
weight
relationships.
Select
your
boost
setting
based
on
your
towing
situation,
driving
preference
and
condition
of
your
trailer
brakes.
(Reverse
continued)
(If
“boost”
was
active,
the
right
hand
decimal
point
will
also
be
on.)
After
three
minutes
the
“BOOST”
and
“HOLD”
features
will
automatically
return
to
your
previous
settings.
Troubleshooting
Chart
Display
Situation
Probable
Cause
Flashes
2
times
a
second
or
a
steady
display.
Trailer
is
connected
and
Prodigy
loses
connection
to
battery
ground.
Flashes
2
times
per
second.
Prodigy
“sees”
an
overload
condition
during
operation.
Flashes
2
times
per
second.
1.
Brake
wire
sees
short
during
idle
condition.
2.
Use
of
some
test
lights
or
non-Tekonsha
testers
can
cause
this
problem.
The
lower
two
bars
flash
Prodigy
is
mounted
at
too
low
an
angle.
The
upper
two
bars
flash
Prodigy
is
mounted
at
too
high
an
angle.
Flashes
for
15
seconds
1.
Trailer
not
connected
to
tow
vehicle.
2.
Trailer
connected
with
open
circuit
on
brake
line.
3.
Trailer
connector
disconnected
or
corroded.
4.
Loss
of
trailer
brake
magnet
ground.
(Blank
Display)
No
display
with
manual
or
pedal
activation.
1.
Loss
of
power
to
Prodigy.
2.
Loss
of
ground
to
Prodigy.
No
display
until
activation
Prodigy
is
in
power-saving
mode
due
to
no
motion
for
fifteen
minutes.
No
braking
Power
control
set
to
0.
Power
interruption
while
brake
pedal
is
depressed.
NOTE:
Returning
to
your
previous
settings
prior
to
three
minR
utes
can
be
accomplished
by
pressing
the
boost
button.
Reverse
When
backing
a
trailer
you
can
cancel
“BOOST”
and
“HOLD”
for
a
period
of
three
minutes.
This
can
be
accomplished
by
pressing
the
boost
button
continuousa
ly
for
five
seconds
with
the
brake
pedal
depressed.
The
display
will
indicate:
Boost
Setting
The
boost
button
was
designed
to
allow
a
more
aggressive
setting
for
your
trailer
brakes
and
is
available
in
three
levs
els
-
[
b
.I
]
,
[
b
.2
]
,
[
b
.3
]
.
Each
incremental
boost
setting
increases
the
sensitivity
of
the
Prodigy’
s
inertial
sensor,
enhancing
the
paticipation
of
the
trailer
brakes
during
a
braking
event.
The
first
press
on
the
boost
button
displays
the
current
setT
ting.
Boost
is
advanced
to
the
next
level
by
continuing
to
press
the
boost
button.
Five
seconds
after
setting
the
boost
level,
the
display
will
show
indicating
Boost
On
by
the
right
most
decimal.
For
example:
With
the
boost
off
,
[
.c
],
during
a
braking
event,
the
power
to
the
brakes
starts
out
at
zero
and
increases
with
deceleration.
With
the
boost
on
level
1
,
(with
properly
adjusted
trailer
brakes*)
TRAILER
WEIGHT
compared
to
VEHICLE
WEIGHT
BOOST
“OFF”
➮
INCREA
SING
BOOST
LEVEL
➮
X
X
Trailer
weighs
LESS
than
Vehicle
X
X
X
Trailer
weighs
APPROXIMATELY
SAME
as
Vehicle
X
X
X
Trailer
weighs
UP
TO
25%
MORE
than
Vehicle
X
X
Trailer
weighs
UP
TO
40%
MORE
than
Vehicle
WARNING
Do
not
exceed
Gross
Combined
Weight
Rating
(GCWR)
X
Trailer
weighs
OVER
40%
MORE
than
Vehicle
*
Increased
Boost
setting
may
be
needed
if
trailer
brakes
are
worn,
see
Appendix
A
or
a
dealer
for
brake
adjustment
or
repair.
NOTE:
1.
Always
warm
the
trailer's
brakes
before
setting
the
power.
Warm
trailer
brakes
tend
to
be
more
responsive
than
cold
brakes.
To
warm
trailer
brakes,
drive
a
short
distance
(1/4
mile)
at
45
MPH
with
manual
lever
engaged
enough
to
cause
trailer
braking
at
a
low
level.
2.
WARNING
The
power
should
never
be
set
high
enough
to
cause
trailer
brakes
to
lock
up.
Skidding
trailer
wheels
can
cause
loss
of
direcS
tional
stability
of
trailer
and
tow
vehicle.
Typical
Boost
Settings
For
Optimal
Performance
The
power
may
need
to
be
adjusted
for
different
load
weights
and
road
conditions.
Not
all
trailer
brakes
will
lock
up
due
to
various
conditions.
However,
inability
to
lock
up
the
brakes
generally
indicates
the
need
for
an
inspecb
tion
to
determine
the
cause.
When
the
power
is
set
correctly
you
should
feel
unified
braking
between
the
trailer
and
tow
vehiu
cle.
WARNING
Boost
setting
will
be
cleared
under
abnormally
low
battery
conditions.
Check
boost
setting
after
starting
vehicle.
Boost
On
3.
4.
5.
6.
Appendix
A:
Trailer
Brake
Adjustment**
Brakes
should
be
adjusted
after
the
first
200
miles
of
operation
when
the
brake
shoes
and
drums
have
“seated”
and
at
3000
mile
intervals,
or
as
use
and
performance
requires.
The
brakes
should
be
adjusted
in
the
following
manner:
1.
Jack
up
trailer
and
secure
on
adequate
capacity
jack
stands.
Follow
trailer
manufacturers
recommendations
for
lifting
and
supporting
the
unit.
Check
that
the
wheel
and
drum
rotate
freely.
WARNING
Do
not
lift
or
support
trailer
on
any
part
of
the
axle
or
the
suspension
system.
2.
Remove
the
adjusting
hole
cover
from
the
adjusting
slot
on
the
bottom
of
the
brake
backing
plate.
3.
With
a
screwdriver
or
standard
adjusting
tool,
rotate
the
starwheel
of
the
adjuster
assembly
to
expand
the
brake
shoes.
Adjust
the
brake
shoes
out
until
the
pressure
of
the
linings
against
the
drum
makes
the
wheel
very
difficult
to
turn.
Note:
With
drop
spindle
axles,
a
modified
adjusting
tool
with
about
an
80
degree
angle
should
be
used.
4.
Then
rotate
the
starwheel
in
the
opposite
direction
until
the
wheel
turns
freely
with
a
slight
lining
drag.
5.
Replace
the
adjusting
hole
cover
and
lower
the
wheel
to
the
ground.
6.
Repeat
the
above
procedure
on
all
brakes.
WARNING
Never
crawl
under
your
trailer
unless
it
is
resting
on
properly
placed
jack
stands.
Follow
the
trailer
manufacturers
recommendations
for
lifting
and
supporting
the
unit.
Do
not
lift
or
place
supports
on
any
part
of
the
suspension
system.
**Note:
Trailer
Brake
Adjustment
procedures
courtesy
Dexter
Axle.
