RAM 2015 ProMaster City Owner's Manual page 214

212 STARTING AND OPERATING
NOTE: The torque converter clutch will not engage until
the transmission fluid is warm [usually after 1 to 3 miles
(2 to 5 km) of driving]. Because the engine speed is higher
when the torque converter clutch is not engaged, it may
seem as if the transmission is not shifting properly when
cold. This is normal. The torque converter clutch will
function normally once the transmission is sufficiently
warm.
Electronic Range Select (ERS) Operation
The Electronic Range Select (ERS) shift control allows the
driver to limit the highest available gear. For example, if
you set the transmission gear limit to 5 (fifth gear), the
transmission will not shift above fifth gear, but will shift
through the lower gears normally.
You can switch between DRIVE and ERS mode at any
vehicle speed. When the shift lever is in the DRIVE
position, the transmission will operate automatically,
shifting between all available gears.
Moving the shift lever to the ERS position (beside
DRIVE) 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, moving the shift lever
forward (-) or rearward (+) will change the top available
gear and it will be displayed in the instrument cluster.
To exit ERS mode, simply return the shift lever to the
DRIVE position.
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.
I n f o r ma t i o n P r o v i d e d b y :
WARNING!