Ram 2021 2500 truck 2021 RAM 2500

User Manual - Page 145

For 2021 RAM 2500.

PDF File Manual, 456 pages, Download pdf file

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STARTING AND OPERATING 143
operation will resume once the transmission
temperature has risen to a suitable level.
Transmission Limp Home Mode
Transmission function is monitored electronically
for abnormal conditions. If a condition is detected
that could result in transmission damage,
Transmission Limp Home Mode is activated. In this
mode, the transmission may operate only in
certain gears, or may not shift at all. Vehicle
performance may be severely degraded and the
engine may stall. In some situations, the
transmission may not re-engage if the engine is
turned off and restarted. The Malfunction Indicator
Light (MIL) may be illuminated. A message in the
instrument cluster will inform the driver of the
more serious conditions, and indicate what actions
may be necessary.
In the event of a momentary problem, the
tr
ansmission can be reset to regain all forward
gears by performing the following steps:
NOTE:
In cases where the instrument cluster message
in
dicates the transmission may not re-engage after
engine shutdown, perform this procedure only in a
desired location (preferably, at an authorized
dealer).
1. Stop the vehicle.
2
. S
hift the transmission into PARK, if possible. If
n
ot, shift the transmission to NEUTRAL.
3. Push and hold the ignition switch until the
e
ngine turns off.
4. Wait approximately 30 seconds.
5. R
estart the engine.
6
. Shift into the desired gear range. If the
p
roblem is no longer detected, the
transmission will return to normal operation.
NOTE:
Even if the transmission can be reset, we
re
commend that you visit an authorized dealer at
your earliest possible convenience. An authorized
dealer has diagnostic equipment to assess the
condition of your transmission. 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 transmission is in DRIVE. For example, if
you set the transmission gear limit to FOURTH
gear, the transmission will not shift above FOURTH
gear (except to prevent engine overspeed), but will
shift through the lower gears normally.
You can switch between DRIVE and ERS mode at
an
y vehicle speed. When the transmission gear
selector is in DRIVE, the transmission will operate
automatically, shifting between all available gears.
Tapping the GEAR – switch (on the steering wheel)
will activate ERS mode, display the current gear in
the instrument cluster, and set that gear as the top
available gear. Once in ERS mode, tapping the
GEAR – or GEAR + switch will change the top
available gear.
ERS Control
To exit ERS mode, simply push and hold the
GEAR + switch until the gear limit display
di
sappears from the instrument cluster.
1 — GEAR “+” Switch
2 — GEAR “–” Switch
WARNING!
Do not downshift for additional engine braking
on a slippery surface. The drive wheels could
lose their grip and the vehicle could skid,
causing a collision or personal injury.
4
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