PREVOST X3-45 VIP 2017 Owner's Manual page 202

APPENDIX C – Allison Transmission's Other Features
6
(Upshift) &
(Downshift) arrow
buttons pressed
simultaneously *
st
1 press
nd
2 press
rd
3 press
th
4 press
th
5 press
* With the engine off and ignition on.
Allison transmission oil level check
Oil Life Monitor
Oil life remaining will range from 99% down to 00%
Filter Life Monitor
Present life of filter is acceptable
Present life of filter is unacceptable
Transmission Health Monitor
Shows "
TRANS HEALTH OK
more of the clutch(es) wear enough so that the
programming changes
One or more of the clutches have worn enough to change
the program
Display of diagnostic codes
Description
" until remaining life of one or
Message
" O " " M "
Some Some
number number
from 9 from 9
to 0 to 0
" F" " M "
OIL FILTER OK
REPLACE FILTERS
" T" " M "
TRANS HEALTH OK
TRANS HEALTH LO