2020 Ram ProMaster City heater

4
WARNING LIGHTS AND MESSAGES .......................... 84
Red Warning Lights ...................................................... 84
Yellow Warning Lights................................................. 88
Green Indicator Lights .................................................. 92
Blue Indicator Lights ..................................................... 93
 ONBOARD DIAGNOSTIC SYSTEM — OBD II ............. 94
Onboard Diagnostic System (OBD II)
Cybersecurity ................................................................. 94
 EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ....................................................................... 95
SAFETY
SAFETY FEATURES ........................................................... 97
Four-Wheel Anti-Lock Brake System (ABS) ............ 97
Electronic Brake Control (EBC) System .................... 98
 AUXILIARY DRIVING SYSTEMS .................................. 103
Tire Pressure Monitoring System (TPMS) ............. 103
 OCCUPANT RESTRAINT SYSTEMS ........................... 108
Occupant Restraint Systems ...................................... 108
Important Safety Precautions .................................... 108
Seat Belt Systems ........................................................ 109
Supplemental Restraint Systems (SRS) .................... 120
Child Restraints ......................................................... 133
Transporting Pets ..................................................... 153 
SAFETY TIPS ...................................................................153
Transporting Passengers ............................................153
Exhaust Gas ..............................................................153
Safety Checks You Should Make Inside
The Vehicle ..................................................................154
Periodic Safety Checks You Should Make Outside
The Vehicle ...................................................................156
STARTING AND OPERATING
STARTING THE ENGINE ..............................................157
Automatic Transmission.............................................157
Normal Starting ........................................................... 157
Cold Weather Operation ...........................................158
Extended Park Starting ...............................................158
If Engine Fails To Start ..............................................158
After Starting ................................................................159
 ENGINE BLOCK HEATER — IF EQUIPPED .............159
 ENGINE BREAK-IN RECOMMENDATIONS ............160
 PARKING BRAKE ........................................................... 161
 AUTOMATIC TRANSMISSION ....................................163
Key Ignition Park Interlock ........................................164
Brake/Transmission Shift Interlock System ............164
Nine-Speed Automatic Transmission ......................164
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 4

12 INTRODUCTION
WARNINGS AND CAUTIONS
This Owner’s Manual contains WARNINGS against oper-
ating procedures that could result in a collision, bodily injury
and/or death. It also contains CAUTIONS against proce -
dures that could result in damage to your vehicle. If you do
not read this entire Owner’s Manual, you may miss
important information. Observe all Warnings and Cautions.
VAN CONVERSIONS/CAMPERS
The New Vehicle Limited Warranty does not apply to body
modifications or special equipment installed by van conver -
sion/camper manufacturers/body builders. U.S. residents
refer to the Warranty Information, Section 2.1.C. Canadian
residents refer to the “What Is Not Covered” section of the
Warranty Information. Such equipment includes video
monitors, VCRs, heaters, stoves, refrigerators, etc. For
warranty coverage and service on these items, contact the
applicable manufacturer. Operating instructions for the special equipment installed by
the conversion/camper manufacturer should also be
supplied with your vehicle. If these instructions are missing,
please contact an authorized dealer for assistance in
obtaining replacement documents from the applicable
manufacturer.
For information on the Body Builder’s Guide refer to
www.rambodybuilder.com
. This website contains dimen -
sional and technical specifications for your vehicle. It is
intended for Second Stage Manufacturer's technical support.
For service issues, contact an authorized dealer.
VEHICLE MODIFICATIONS/ALTERATIONS
WARNING!
Any modifications or alterations to this vehicle could
seriously affect its roadworthiness and safety and may
lead to a collision resulting in serious injury or death.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 12

32 GETTING TO KNOW YOUR VEHICLE
Heated Seats — If Equipped
On some models, the front driver and passenger seats may
be equipped with heaters in both the seat cushions and seat-
backs. The controls for the front heated seats are located on
the lower outboard side of the seat.
Heated Seat Control Button
Push the switch once to turn on the heated seats. The LED on
the switch illuminates when the heated seat is on. Push the
switch a second time to shut the heating elements off. NOTE:
• This feature is only available with the ignition key in MAR
(ACC/ON/RUN) position.
• Once a heat setting is selected, heat will be felt within two to five minutes.
WARNING!
• Persons who are unable to feel pain to the skin because of advanced age, chronic illness, diabetes, spinal cord
injury, medication, alcohol use, exhaustion or other
physical condition must exercise care when using the
seat heater. It may cause burns even at low tempera -
tures, especially if used for long periods of time.
• Do not place anything on the seat or seatback that insu -
lates against heat, such as a blanket or cushion. This
may cause the seat heater to overheat. Sitting in a seat
that has been overheated could cause serious burns due
to the increased surface temperature of the seat.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 32

58 GETTING TO KNOW YOUR VEHICLE
Winter Operation
To ensure the best possible heater and defroster perfor-
mance, make sure the engine cooling system is functioning
properly and the proper amount, type, and concentration of
coolant is used. Refer to “Fluids And Lubricants” in “Tech -
nical Specifications” for proper coolant selection. Use of the
air recirculation mode during Winter months is not recom -
mended because it may cause window fogging.
Vacation/Storage
Any time you store your vehicle or keep it out of service (i.e.,
vacation) for two weeks or more, run the air conditioning
system at idle for about five minutes in fresh air with the
blower setting on high. This will ensure adequate system
lubrication to minimize the possibility of compressor
damage when the system is started again. Window Fogging

Vehicle windows tend to fog on the inside of the glass in mild,
rainy and/or humid weather. Windows may frost on the inside
of the glass in very cold weather. To clear the windows, select
Defrost or Mix mode and increase the front blower speed. Do
not use the Recirculation mode without Air Conditioning (A/C)
for long periods, as fogging may occur.

CAUTION!
Failure to follow these cautions can cause damage to the
heating elements:
• Use care when washing the inside of the rear window. Do not use abrasive window cleaners on the interior
surface of the window. Use a soft cloth and a mild
washing solution, wiping parallel to the heating
elements. Labels can be peeled off after soaking with
warm water.
• Do not use scrapers, sharp instruments, or abrasive window cleaners on the interior surface of the window.
• Keep all objects a safe distance from the window.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 58

SAFETY 131
Enhanced Accident Response System
In the event of an impact, if the communication network
remains intact, and the power remains intact, depending on
the nature of the event, the ORC will determine whether to
have the Enhanced Accident Response System perform the
following functions:
• Cut off fuel to the engine (if equipped)
• Cut off battery power to the electric motor (if equipped)
• Flash hazard lights as long as the battery has power
• Turn on the interior lights, which remain on as long as thebattery has power or for 15 minutes from the intervention
of the Enhanced Accident Response System
• Unlock the power door locks
Your vehicle may also be designed to perform any of these
other functions in response to the Enhanced Accident
Response System:
• Turn off the Fuel Filter Heater, Turn off the HVAC Blower Motor, Close the HVAC Circulation Door • Cut off battery power to the:
• Engine
• Electric Motor (if equipped)
• Electric Power Steering
• Brake booster
• Automatic transmission gear selector
• Horn
• Front wiper
NOTE:
After an accident, remember to cycle the ignition to the STOP
(OFF/LOCK) position and remove the key from the ignition
switch to avoid draining the battery. Carefully check the
vehicle for fuel leaks in the engine compartment and on the
ground near the engine compartment and fuel tank before
resetting the system and starting the engine. If there are no
fuel leaks or damage to the vehicle electrical devices (e.g.
headlights) after an accident, reset the system by following
the procedure described below. If you have any doubt,
contact an authorized dealer.
4
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 131

158 STARTING AND OPERATING
Cold Weather Operation
To ensure reliable starting at low temperatures, use of an
externally powered electric engine block heater (available
from your authorized dealer) is recommended.
To prevent possible engine damage while starting at low
temperatures, this vehicle will inhibit engine cranking when
the ambient temperature is less than -31°F (-35° C) and the oil
temperature sensor reading indicates an engine block heater
has not been used. The message “plug in engine heater” will
be displayed in the instrument cluster when the ambient
temperature is below -25°F (-32° C) at the time the engine is
shut off as a reminder.
Extended Park Starting
NOTE:
Extended Park condition occurs when the vehicle has not
been started or driven for at least 30 days.
1. Install a battery charger or jumper cables to the battery toensure a full battery charge during the crank cycle.
2. Cycle the ignition to the AVV/”START” position and release it when the engine starts. 3. If the engine fails to start within ten seconds, cycle the
ignition to the STOP (OFF/LOCK) position, wait five
seconds to allow the starter to cool, then repeat the
Extended Park Starting procedure.
4. If the engine fails to start after eight attempts, allow the starter to cool for at least 10 minutes, then repeat the
procedure.
If Engine Fails To Start

If the engine fails to start after you have followed the "Normal
Starting" or "Extreme Cold Weather" procedure, and has not
experienced an extended park condition as identified in
"Extended Park Starting" procedure it may be flooded. Push
the accelerator pedal all the way to the floor and hold it there.
Crank the engine for no more than 15 seconds. This should
clear any excess fuel in case the engine is flooded. Leave the
ignition key in the MAR position, release the accelerator pedal
and repeat the “Normal Starting” procedure.
CAUTION!
To prevent damage to the starter, do not crank
continuously for more than 10 seconds at a time. Wait 10
to 15 seconds before trying again.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 158

STARTING AND OPERATING 159
After Starting
The idle speed is controlled automatically, and it will
decrease as the engine warms up.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine and permits
quicker starts in cold weather.
Connect the cord to a 110-115 Volt AC electrical outlet with a
grounded, three-wire extension cord.
For ambient temperatures below 0°F (-18°C), the engine
block heater is recommended. For ambient temperatures
below -20°F (-29°C), the engine block heater is required.
The engine block heater cord is routed under the hood,
behind to the driver’s side headlamp. Follow the steps below
to properly use the engine block heater:
1. Locate the engine block heater cord (behind the driver’sside headlamp).
2. Undo the hook-and-loop strap that secures the heater cord in place.
WARNING!
• Never pour fuel or other flammable liquid into the throttle body air inlet opening in an attempt to start the
vehicle. This could result in flash fire causing serious
personal injury.
• Do not attempt to push or tow your vehicle to get it started. Vehicles equipped with an automatic
transmission cannot be started this way. Unburned fuel
could enter the catalytic converter and once the engine
has started, ignite and damage the converter and
vehicle.
• If the vehicle has a discharged battery, booster cables may be used to obtain a start from a booster battery or
the battery in another vehicle. This type of start can be
dangerous if done improperly. Refer to “Jump Starting
Procedure” in “In Case Of Emergency” for further
information.
CAUTION!
To prevent damage to the starter, do not continuously
crank the engine for more than 25 seconds at a time. Wait
60 seconds before trying again.
5
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 159

160 STARTING AND OPERATING
3. Pull the cord to the front of the vehicle and plug it into agrounded, three-wire extension cord.
4. After the vehicle is running, reattach the cord to the hook-and-loop strap and properly stow away behind the
driver’s side headlamp.
NOTE:
• The engine block heater cord is a factory installed option. If your vehicle is not equipped, heater cords are available
from your authorized Mopar dealer.

• The engine block heater will require 110 Volts AC and 6.5 Amps to activate the heater element.

• The engine block heater must be plugged in at least one hour to have an adequate warming effect on the engine.ENGINE BREAK-IN RECOMMENDATIONS
A long break-in period is not required for the engine and
drivetrain (transmission and axle) in your vehicle.
Drive moderately during the first 300 miles (500 km). After
the initial 60 miles (100 km), speeds up to 50 or 55 mph (80 or
90 km/h) are desirable.
While cruising, brief full-throttle acceleration within the
limits of local traffic laws contributes to a good break-in.
Wide-open throttle acceleration in low gear can be detri -
mental and should be avoided.
The engine oil installed in the engine at the factory is a
high-quality energy conserving type lubricant. Oil changes
should be consistent with anticipated climate conditions
under which vehicle operations will occur. For the recom -
mended viscosity and quality grades, refer to “Fluids And
Lubricants” in “Technical Specifications”.
WARNING!
Remember to disconnect the engine block heater cord
before driving. Damage to the 110-115 Volt electrical
cord could cause electrocution.
CAUTION!
Never use Non-Detergent Oil or Straight Mineral Oil in
the engine or damage may result.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 160