2020 Ram ProMaster City fuel pressure

246 SERVICING AND MAINTENANCE
Checking Oil Level
To ensure proper engine lubrication, the engine oil must be
maintained at the correct level. Check the oil level at regular
intervals, such as every fuel stop. The best time to check the
engine oil level is about five minutes after a fully warmed up
engine is shut off.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings.
There are four possible dipstick types,
• Crosshatched zone.
• Crosshatched zone marked SAFE.
• Crosshatched zone marked with MIN at the low end of therange and MAX at the high end of the range.
• Crosshatched zone marked with dimples at the MIN and the MAX ends of the range. NOTE:
Always maintain the oil level within the crosshatch mark
-
ings on the dipstick.
Adding 1 quart (1.0 liters) of oil when the reading is at the
low end of the dipstick range will raise the oil level to the
high end of the range marking.
Adding Washer Fluid

The windshield and rear window washers share the same fluid
reservoir. The fluid reservoir is located in the front of the engine
compartment. Be sure to check the fluid level in the reservoir at
regular intervals. Fill the reservoir with windshield washer
solvent (not radiator antifreeze) and operate the system for a
few seconds to flush out the residual water.

When refilling the washer fluid reservoir, take some washer
fluid and apply it to a cloth or towel and wipe clean the
wiper blades, this will help blade performance. CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage your
engine.
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276 SERVICING AND MAINTENANCE
(Continued)
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to the safe and satis-
factory operation of your vehicle. Four primary areas are
affected by improper tire pressure:
• Safety
• Fuel Economy
• Tread Wear
• Ride Comfort and Vehicle Stability
Safety
Both underinflation and overinflation affect the stability of
the vehicle and can produce a feeling of sluggish response or
over responsiveness in the steering.
NOTE:
• Unequal tire pressures from side to side may cause erraticand unpredictable steering response.
• Unequal tire pressure from side to side may cause the vehicle to drift left or right.
WARNING!
• Improperly inflated tires are dangerous and can cause collisions.
• Underinflation increases tire flexing and can result in overheating and tire failure.
• Overinflation reduces a tire's ability to cushion shock. Objects on the road and chuckholes can cause damage
that result in tire failure.
• Overinflated or underinflated tires can affect vehiclehandling and can fail suddenly, resulting in loss of
vehicle control.
• Unequal tire pressures can cause steering problems. You could lose control of your vehicle.
• Unequal tire pressures from one side of the vehicle to the other can cause the vehicle to drift to the right or
left.
• Always drive with each tire inflated to the recom -
mended cold tire inflation pressure.
WARNING! (Continued)
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SERVICING AND MAINTENANCE 277
Fuel Economy
Underinflated tires will increase tire rolling resistance
resulting in higher fuel consumption.
Tread Wear
Improper cold tire inflation pressures can cause abnormal
wear patterns and reduced tread life, resulting in the need
for earlier tire replacement.
Ride Comfort And Vehicle Stability
Proper tire inflation contributes to a comfortable ride.
Over-inflation produces a jarring and uncomfortable ride.
Tire Inflation Pressures
The proper cold tire inflation pressure is listed on the driver's
side B-Pillar or rear edge of the driver's side door.
At least once a month:
• Check and adjust tire pressure with a good qualitypocket-type pressure gauge. Do not make a visual judge -
ment when determining proper inflation. Tires may look
properly inflated even when they are under-inflated.
• Inspect tires for signs of tire wear or visible damage. Inflation pressures specified on the placard are always “cold
tire inflation pressure”. Cold tire inflation pressure is
defined as the tire pressure after the vehicle has not been
driven for at least three hours, or driven less than 1 mile
(1.6 km) after sitting for a minimum of three hours. The cold
tire inflation pressure must not exceed the maximum infla
-
tion pressure molded into the tire sidewall.
Check tire pressures more often if subject to a wide range of
outdoor temperatures, as tire pressures vary with tempera -
ture changes.
Tire pressures change by approximately 1 psi (7 kPa) per
12°F (7°C) of air temperature change. Keep this in mind
when checking tire pressure inside a garage, especially in the
Winter. CAUTION!
After inspecting or adjusting the tire pressure, always
reinstall the valve stem cap. This will prevent moisture
and dirt from entering the valve stem, which could
damage the valve stem.
7
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INDEX
A
Adding Engine Coolant (Antifreeze) ................................... 256
Additives, Fuel ........................................................................ 299
Air Bag Air Bag Operation ............................................................... 124Driver Knee Air Bag ........................................................... 125
Enhanced Accident Response ................................... 131, 240
Event Data Recorder (EDR) ............................................... 240
Front Air Bag ....................................................................... 122If Deployment Occurs ........................................................ 130
Knee Impact Bolsters .......................................................... 124Maintaining Your Air Bag System.................................... 132
Maintenance......................................................................... 132
Transporting Pets ................................................................ 153
Air Bag Light ..................................................................... 84, 154
Air Cleaner, Engine (Engine Air Cleaner Filter) ................ 250
Air Conditioner Maintenance ............................................... 251
Air Conditioner Refrigerant .................................................. 251
Air Conditioner System ......................................................... 251
Air Conditioning Filter ............................................................ 59
Air Conditioning, Operating Tips .................................... 57, 59 Air Filter ................................................................................... 250 Air Pressure
Tires .......................................................................................277
Alarm Security Alarm .......................................................................21
Alterations/Modifications Vehicle.....................................................................................12
Antifreeze (Engine Coolant) ..........................................256, 301 Disposal ................................................................................258
Anti-Lock Brake System (ABS) ...............................................97 Anti-Lock Warning Light.........................................................88
Assist, Hill Start .......................................................................101
Audio Systems (Radio)........................................................... 305
Auto Down Power Windows ..................................................61
Auto Up Power Windows .......................................................61Automatic Transmission ................................................163, 164 Adding Fluid................................................................263, 304
Fluid And Filter Change ....................................................263
Fluid Change........................................................................263Fluid Level Check........................................................261, 262
Fluid Type ....................................................................261, 304
Special Additives .................................................................262
Auxiliary Electrical Outlet (Power Outlet) ............................70
Axle Fluid .................................................................................304
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336
B
Battery................................................................................. 86, 247 Charging System Light......................................................... 86
Keyless Key Fob Replacement ............................................ 15
Belts, Seat ................................................................................. 154
Body Builders Guide ................................................................ 12
Body Mechanism Lubrication ............................................... 252
B-Pillar Location...................................................................... 272
Brake Assist System .................................................................. 98
Brake Fluid ............................................................................... 304
Brake System ................................................................... 260, 295 Anti-Lock (ABS) .................................................................... 97
Fluid Check .................................................................. 260, 304
Master Cylinder................................................................... 260 Parking.................................................................................. 161
Warning Light ....................................................................... 85
Brake, Parking ......................................................................... 161
Brake/Transmission Interlock .............................................. 164
Bulb Replacement ................................................................... 200
Bulbs, Light ...................................................................... 156, 200 C
Camera, Rear ........................................................................... 179
Capacities, Fluid...................................................................... 301
Caps, Filler Fuel ........................................................................................ 181Oil (Engine) .................................................................. 245, 249 Power Steering .....................................................................171
Radiator (Coolant Pressure)...............................................257
Car Washes ..............................................................................291
Carbon Monoxide Warning ...........................................153, 300
Cargo Area Cover .....................................................................66
Cargo Area Features .................................................................66
Cargo Compartment .................................................................66
Cargo Tie-Downs ......................................................................66
Cellular Phone .........................................................................320
Certification Label ...................................................................182
Chains, Tire ..............................................................................287
Changing A Flat Tire ......................................................212, 266
Chart, Tire Sizing .................................................................... 268
Check Engine Light (Malfunction Indicator Light)..............95
Checking Your Vehicle For Safety ........................................153
Checks, Safety ..........................................................................153
Child Restraint.........................................................................133
Child Restraints Booster Seats ........................................................................137Child Seat Installation.................................................147, 151
How To Stow An unused ALR Seat Belt .........................144Infant And Child Restraints...............................................136
Locating The LATCH Anchorages ...................................142
Lower Anchors And Tethers For Children .....................139Older Children And Child Restraints ..............................136Seating Positions..................................................................138
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341
Traction Control .................................................................. 100
Turn Signals ................................................................... 92, 156Warning Instrument Cluster Descriptions .................. 87, 92
Loading Vehicle .............................................................. 182, 184 Capacities ............................................................................. 184
Tires....................................................................................... 272
Locks Power Door ............................................................................ 22
Low Tire Pressure System ..................................................... 103
Lubrication, Body ................................................................... 252
Lug Nuts/Bolts ....................................................................... 295 M
Maintenance Free Battery ...................................................... 247
Maintenance Schedule ........................................................... 241
Malfunction Indicator Light (Check Engine) .................. 91, 95
Manual Service ................................................................................... 333
Master Cylinder Brakes.................................................................................... 260
Methanol .................................................................................. 297
Mirrors ........................................................................................ 38 Electric Powered.................................................................... 41
Electric Remote ...................................................................... 41
Exterior Folding..................................................................... 40
Outside ................................................................................... 39
Rearview................................................................................. 38 Modifications/Alterations
Vehicle.....................................................................................12
Monitor, Tire Pressure System ..............................................103
Mopar Parts..............................................................................332 N
New Vehicle Break-In Period ................................................160 O
Occupant Restraints ................................................................108
Octane Rating, Gasoline (Fuel)......................................297, 302
Oil Change Indicator ................................................................80 Reset ........................................................................................80
Oil Filter, Change .................................................................... 250
Oil Filter, Selection ..................................................................250
Oil Pressure Light .....................................................................87
Oil Reset......................................................................................80
Oil, Engine ........................................................................248, 302 Capacity ................................................................................301Change Interval ...................................................................248Checking ...............................................................................246
Dipstick .................................................................................246
Disposal ................................................................................250Filter ..............................................................................250, 302
Filter Disposal ......................................................................250
Identification Logo ..............................................................249
Materials Added To ............................................................ 250
Pressure Warning Light .......................................................87
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