Transmission Limp Home Mode
Transmission function is monitored electronically for ab-
normal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
Mode is activated. In this mode, the transmission remains
in fourth gear (for 66RFE transmission) or third gear (for
AS66RC transmission) regardless of which forward gear is
selected. If an AS66RC equipped truck enters Limp Home
Mode at highway speeds, it will initially engage fifth gear,
until the vehicle slows to a speed where third gear can be
engaged. PARK, REVERSE, and NEUTRAL will continue
to operate. The Malfunction Indicator Light (MIL) may be
illuminated. Limp Home Mode allows the vehicle to be
driven to an authorized dealer for service without damag-
ing the transmission.
In the event of a momentary problem, the transmission can
be reset to regain all forward gears by performing the
following steps:
1. Stop the vehicle.
2. Shift the transmission into PARK.
3. Turn the ignition to the OFF position.
4. Wait approximately 10 seconds.
5. Restart the engine.
6. Shift into the desired gear range. If the problem is no
longer detected, the transmission will return to normal
operation.
NOTE:
Even if the transmission can be reset, we recom-
mend that you visit your authorized dealer at your earliest
possible convenience. Your authorized dealer has diagnos-
tic equipment to determine if the problem could recur.
If the transmission cannot be reset, authorized dealer
service is required.
Electronic Range Select (ERS) Operation
The Electronic Range Select (ERS) shift control allows the
driver to limit the highest available gear when the trans-
mission is in DRIVE. For example, if you set the transmis-
sion gear limit to 4 (fourth gear), the transmission will not
shift above fourth gear, but will shift through the lower
gears normally.
You can switch between DRIVE and ERS mode at any
vehicle speed. When the gear selector is in the DRIVE
position, the transmission will operate automatically, shift-
ing between all available gears. Tapping the ERS (-) switch
will activate ERS mode, display the current gear in the
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STARTING AND OPERATING
Summary of Contents for Chassis Cab 2017
Page 4: ......
Page 10: ......
Page 288: ...8 4 8 4 NAV With Manual Temperature Controls 286 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 289: ...8 4 8 4 NAV With Automatic Temperature Controls 4 UNDERSTANDING YOUR INSTRUMENT PANEL 287 ...
Page 298: ...Operating Tips Chart 296 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 305: ...Uconnect 5 0 Radio Uconnect 8 4 8 4 NAV Radio 4 UNDERSTANDING YOUR INSTRUMENT PANEL 303 ...
Page 307: ...Uconnect 5 0 Media Uconnect 8 4 8 4 NAV Media 4 UNDERSTANDING YOUR INSTRUMENT PANEL 305 ...
Page 452: ......
Page 513: ...MAINTENANCE SCHEDULES CONTENTS 䡵 MAINTENANCE SCHEDULE 512 Maintenance Chart 513 8 ...
Page 525: ...INDEX 10 ...