2016 Ram ProMaster ABS

Brake Warning Light
Red Telltale LightWhat It Means
Brake Warning Light
This light monitors various brake functions, including brake fluid level and parking brake ap-
plication. If the brake light turns on it may indicate that the parking brake is applied, that the
brake fluid level is low, or that there is a problem with the anti-lock brake system reservoir.
If the light remains on when the parking brake has been disengaged, and the fluid level is at
the full mark on the master cylinder reservoir, it indicates a possible brake hydraulic system
malfunction or that a problem with the Brake Booster has been detected by the Anti-Lock
Brake System (ABS) / Electronic Stability Control (ESC) system. In this case, the light will re-
main on until the condition has been corrected. If the problem is related to the brake booster,
the ABS pump will run when applying the brake, and a brake pedal pulsation may be felt
during each stop.
The dual brake system provides a reserve braking capacity in the event of a failure to a por-
tion of the hydraulic system. A leak in either half of the dual brake system is indicated by the
Brake Warning Light, which will turn on when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.
NOTE:
The light may flash momentarily during sharp cornering maneuvers, which change fluid level
conditions. The vehicle should have service performed, and the brake fluid level checked.
If brake failure is indicated, immediate repair is necessary.
26 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed.
It will take longer to stop the vehicle. You could have
a collision. Have the vehicle checked immediately.
Vehicles equipped with the Anti-Lock Brake System
(ABS) are also equipped with Electronic Brake Force
Distribution (EBD). In the event of an EBD failure, the
Brake Warning Light will turn on along with the ABS
Light. Immediate repair to the ABS system is required. Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the
ON/RUN position. The light should illuminate for ap-
proximately two seconds. The light should then turn off
unless the parking brake is applied or a brake fault is
detected. If the light does not illuminate, have the light
inspected by an authorized dealer.
The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN posi-
tion.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake application.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 27

Anti-Lock Brake (ABS) Indicator Light
Yellow TelltaleLight What It Means
Anti-Lock Brake (ABS) Indicator Light
This light monitors the Anti-Lock Brake System (ABS). The light will turn on when the igni-
tion switch is placed in the ON/RUN position and may stay on for as long as four seconds.
If the ABS light remains on or turns on while driving, then the Anti-Lock portion of the
brake system is not functioning and service is required. However, the conventional brake
system will continue to operate normally if the BRAKE warning light is not on.
If the ABS light is on, the brake system should be serviced as soon as possible to restore the
benefits of Anti-Lock Brakes. If the ABS light does not turn on when the ignition switch is
placed in the ON/RUN position, have the light inspected by an authorized dealer.
40 UNDERSTANDING YOUR INSTRUMENT PANEL

DEF Fill Procedure
NOTE:Refer to “Fluids, Lubricants, And Genuine Parts”
in “Maintaining Your Vehicle” for the correct fluid type. 1. Remove cap from DEF filler neck (located on drivers
side of the vehicle in the fuel door).
2. Insert DEF fill adapter/nozzle into DEF tank filler neck.
CAUTION!
•To avoid DEF spillage, and possible damage to the
DEF tank from overfilling, do not “top off” the DEF
tank after filling.
• DO NOT OVERFILL. DEF will freeze below 12ºF
(-11ºC). The DEF system is designed to work in
temperatures below the DEF freezing point, how-
ever, if the tank is overfilled and freezes, the
system could be damaged.
• When DEF is spilled, clean the area immediately
with water and use an absorbent material to soak
up the spills on the ground.
(Continued)
1 — Diesel Fuel Fill Location
2 — Diesel Exhaust Fluid (DEF) Fill Location
5
STARTING AND OPERATING 85

WARNING!(Continued)
fluid in a open container absorbs moisture from the
air resulting in a lower boiling point. This may
cause it to boil unexpectedly during hard or pro-
longed braking, resulting in sudden brake failure.
This could result in a accident.
• Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing
the brake fluid to catch fire. Brake fluid can also
damage painted and vinyl surfaces, care should be
taken to avoid its contact with these surfaces.
• Do not allow petroleum based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in an accident.
Automated Manual Transmission
Checking Fluid Levels
To check the gear oil and check/replace the hydraulic
clutch operating system fluid, contact only your autho-
rized dealer.
NOTE: Do not add or use leak detection dye in the
hydraulic clutch operating system fluid.
WARNING!
Used gear oil contains substances that are hazardous
for the environment. It is advisable to have oil
changed by your authorized dealer where used oil
will be disposed of according to the law.
118 MAINTAINING YOUR VEHICLE