Service brake system warning on driver info center on dash

Check your engine oil using the oil dipstick located on the engine - you need to add oil to the fill line as shown on the dipstick. You should have the oil replaced regularly (every 3-6 months) and keep your eye on the level if the engine is leaking oil underneath or burning a lot of it.

Warning Messages The warning messages can interrupt the display until cleared or reset by the driver. The warning messages are either single cycle, non-resettable, or repetitive warning messages.
The single cycle warning messages display once whenever the ignition switch is turned to the ON position or a fault occurs in a system, and can be cleared by pressing the RESET button. The single cycle warning messages are:

• liftgate ajar
• liftgate glass ajar
• service emission system
• low brake fluid
• service brake system
• check left headlamp
• check right headlamp
• check left turn lamps
• check right turn lamps
• check left high beam
• check right high beam
• check brake lamps
• check parking lamps
• washer fluid low
• check fuel cap
• change oil soon
• change oil now
• low fuel
• service 4x4
• turn signal on

Have a shop check for codes & check their
data base, to learn how to diagnose the issue

Same procedure as any vehicle problem

Stop using it & get to work looking for any problem
& resolve them, as you find them

The light may go away,but not the problem,get it fixed

Check the warning sensor adjustment as the eb system may be worn enough to set it off if the adjustment is too close.

Page 13 of owner's manual says:
AdvanceTrac
(if equipped):
Illuminates when the AdvanceTrac
system is active. If the light remains
on, have the system serviced
immediately.
AWD locked (if equipped):
AWD
Illuminates when all wheel drive
LOCKED
(AWD) is engaged/activated. If the
light continues to flash, have the
system serviced.

Page 224:
ALL WHEEL DRIVE (AWD) SYSTEM (IF EQUIPPED)
Your vehicle may be equipped with an All Wheel Drive (AWD) transfer
case. With the AWD option, power is supplied to all four wheels
automatically with no need to shift between two-wheel drive and
four-wheel drive. If your vehicle is equipped with the AdvanceTrac
stability enhancement feature, you can change AWD modes, if desired,
by selecting AWD options through the message center.
For the lubricant specification and refill capacity of the AWD transfer
case refer to Maintenance and specifications chapter.
If your vehicle is equipped with AWD, a spare tire of a different
diameter than the road tires should never be used. Such a tire
could make the vehicle difficult to control as well as result in damage
to driveline components.
Utility and four-wheel drive vehicles are not designed for
cornering at speeds as high as passenger cars any more than
low-slung sports cars are designed to perform satisfactorily under
off-road conditions. Avoid sharp turns or abrupt maneuvers in these
vehicles.
The following sections, Normal operation, Autolock operation and
Disabling AWD, apply only to vehicles which allow the driver to change
AWD modes through the message center.
Normal operation (vehicles equipped with AdvanceTrac
During normal operation:
• the AWD system is in AWD AUTO mode (AWD LOCKED will
illuminate in the message center for four seconds when you first start
your vehicle). The AWD LOCKED indicator in the instrument cluster
will also come on.
• AWD AUTO mode can be overridden by pressing SETUP in the
message center. When you first press SETUP, AWD <AUTO> will be
displayed, then if you press RESET within four seconds of pressing
SETUP, AWD <LOCKED> will be displayed. AWD <LOCKED> provides
power to all four wheels constantly which allows you to operate your
vehicle in severe winter or off-road conditions such as deep snow, ice
or shallow sand. It is not recommended that you use AWD <LOCKED>
on dry pavement.

Page 225:
• AWD <LOCKED> can be cancelled by pressing RESET in the message
center. (The AWD LOCKED display in the message center will then
turn off and the display will return to AWD <AUTO> for four seconds
when the shift is complete.)
Autolock operation (vehicles equipped with AdvanceTrac
If the AWD system begins to overheat, the system will place itself in the
Autolock mode:
• the AWD LOCKED indicator light will illuminate in the instrument
cluster and AWD DISABLED <LOCKED> will be displayed in the
message center.
• AWD LOCKED will be displayed in the message center for four
seconds and a warning chime will sound. This condition may clear
without any action being taken by the driver.
• the AWD LOCKED indicator light in the instrument cluster will turn
off when the AWD system cools down.
• When the system is sufficiently cooled down, AWD AUTO RESTORED
will appear in the message center for four seconds and a warning
chime will sound.
Disabling AWD (vehicles equipped with AdvanceTrac
When a problem is detected in the AWD system:
• the AWD LOCKED indicator light in the instrument cluster will flash
eight times every two minutes in the message center.
• The message center will then display AWD DISABLED for four
seconds, then SEE OWNER'S MANUAL. A warning chime will also
sound. The warning displays and chime will continue until RESET is
pressed (which will clear the message from the display).
• AWD LOCKED can still be engaged by pressing SETUP (the message
center will display AWD <DISABLED> LOCKED), then pressing
RESET. The AWD LOCKED indicator light will illuminate in the
instrument cluster and the message center will display AWD
DISABLED <LOCKED>.
• To disable AWD, press RESET. The system will go back to AWD AUTO
mode momentarily, then the AWD LOCKED indicator light will flash in
the instrument cluster eight times every two minutes. The display will
then show AWD <DISABLED> LOCKED for four seconds and then
turn off.

Page 226:
• If a serious problem occurs with the AWD system, the AWD LOCKED
indicator light in the instrument cluster will flash 10 times every two
minutes. The message center will also display CHECK AWD and a
warning chime will sound. You can press SETUP to check the status of
the AWD system (which will display AWD <DISABLED> LOCKED),
but the AWD system will be disabled until the system is serviced.
Driving off-road with truck and utility vehicles
AWD vehicles are specially equipped for driving on sand, snow, mud and
rough terrain and have operating characteristics that are somewhat
different from conventional vehicles, both on and off the road.
When driving at slow speeds off-road under high outside temperatures,
use 1 (First) gear when possible. 1 (First) gear operation will maximize
the engine and transmission cooling capability.
Under severe operating conditions, the A/C may cycle on and off to
protect overheating of the engine.

Intervention Regeneration Strategy - EVIC
Message Process Flow (Catalyst Full Message)
(6.7L Diesel Engines Only)

Your new Cummins 6.7L diesel meets all EPA Heavy
Duty Diesel Engine Emissions Standards, resulting in the
lowest emitting diesel engine ever produced.
To achieve these emission standards your vehicle is
equipped with state of the art engine and exhaust system.
The engine and exhaust aftertreatment system work
together to achieve the EPA Heavy Duty Diesel Engine
Emissions Standards. These systems are seamlessly integrated
into your vehicle and managed by the Cummins
6.7L engine Powertrain Control Module (PCM). The PCM
manages engine combustion to allow the exhaust system's
catalyst to trap and burn Particulate Matter (PM)
pollutants, with no input or interaction on your part.
Additionally, the overhead console in your vehicle has
the ability to alert you to additional maintenance required
on your truck or engine. Refer to the following
messages that may be displayed on your Electronic
Vehicle Information Center (EVIC):

WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your exhaust
system. Do not park or operate your vehicle in areas
where your exhaust system can contact anything that
can burn.

Perform Service
The 6.7L Cummins engine utilizes a Closed Crankcase
Ventilation (CCV) system, EGR Valve and a EGR Cooler.
This system filters and recycles gasses produced in the
crankcase during the normal combustion process. Perform
Service will be displayed on the overhead console of
your vehicle if the CCV filter, EGR Valve and EGR Cooler
is due for required maintenance. The CCV filter is located
on the top of the engine valve cover. For additional
information, see your local authorized dealer.
Catalyst Full See Owner Manual
Catalyst Full See Owner Manual will be displayed on the
overhead console of your vehicle if the exhaust particulate
filter reaches 80% of its maximum storage capacity.
Under conditions of exclusive short duration and low
speed driving cycles, your Cummins engine and exhaust
aftertreatment system may never reach the conditions
required to remove the trapped PM, if this occurs Catalyst
Full See Owner Manual will be displayed on the
overhead console in your vehicle. If this message is
displayed you will hear one chime to assist in alerting
you of this condition.
Catalyst Stat::::::::::80%
Catalyst Stat::::::::::80% will replace the message Catalyst
Full See Owner Manual after it is displayed for one
minute. The engine Powertrain Control Module (PCM)
will continue to monitor the amount of particulate matter
trapped in the particulate filter. This message indicates
the percentage of the particulate filter capacity that has
been used.

By simply driving your vehicle at highway speeds for as
little as 45 minutes you can remedy the condition in the
particulate filter system and allow your Cummins engine
and exhaust Aftertreatment system to remove the
trapped PM and restore the system to normal operating
condition.
Catalyst Stat:::::::::::80%, 90%, 99%
Catalyst Stat:::::::::::80%, 90%, 99% If you are unable to
drive your vehicle under these conditions for an extended
period of time after the initial warning notification,
the Engine PCM will continue to monitor the
particulate filter and will display the progression of
particulate filter usage (80, 90, 99%) on the EVIC message
center.

CATALYST FULL SERVICE REQD
If the particulate filter reaches 99% of it's capacity the
overhead console in your vehicle will chime twice and
display the message CATALYST FULL SERVICE REQD.
At this point the engine PCM will register a fault code,
the instrument panel will display a MIL light and the
engine PCM will derate the truck reducing its horsepower
and torque output.
The PCM derates the engine in order to limit the likelihood
of permanent damage to the aftertreatment system.
If this condition is not corrected and a dealer service is
not performed, extensive exhaust aftertreatment damage
can occur. In order to correct this condition it will be
necessary to have the truck serviced by your local
authorized dealer.

Possible problems are :

Low Brake Fluid.

Low Brake Assist pressure .( Some Models.)

Faulty Pad Warning sensors.

Brake sensor loom fault.

Faulty Park Brake Switch...or wiring.

Faulty Brake Switch.

Fuse 17 10amp protects the following 1)transmission control switch and lamp. 2)brake fluid level switch 3)warning chime 4)diesel warning lamps display 5)fuel water switch 6) low vacuum warning switch 7)instrument cluster 8) switch lamps,,,,,,,,,,,,,, i think your problem on transmission control switch, check also brake light and brake switch

The Body Control Module (BCM) controls the audible warnings. Refer to Body Control System Description in Body Control System for more information regarding the BCM.
The body control module (BCM) controls these reminders:
• Key in ignition reminder: An audible warning intended to remind the driver that the key has been left in the ignition cylinder. The BCM sounds the chime for this reminder at a rate of 150 chimes per minute.
• Fasten seat belt reminder: An audible warning intended to remind the driver at the beginning of the driving cycle that the driver's seat belt is unfastened. The BCM sounds the chime for this reminder at a rate of 50 chimes per minute.
• Fasten belts indicator control: A visual warning intended to remind the driver that the driver's seat belt is unfastened.
• Parking brake reminder: An audible warning intended to remind the driver that the parking brake has been left applied with the transaxle shifted out of PARK. The BCM sounds the chime for his reminder at a rate of 200 chimes per minute.
• Turn signal reminder:
An audible warning intended to remind the driver that the turn signal has been left on while the vehicle has traveled over 1.2 km (¾ mile). The BCM sounds the chime for this reminder at a variable rate (in unison with the turn lamps on) of 90 chimes per minute.
• Headlamps ON reminder: An audible waring intended to remind the driver that the headlamps have been left on. The BCM sounds the chime for this reminder at a rate of 200 chimes per minute.
• Last door closed locking confirmation: An audible warning intended to provide the driver feedback that the last door closed locking feature is active. The BCM sounds the chime for this remainder at a rate of 200 chimes per minute.
• Feature customization and diagnostics feedback: An audible feedback used when changing feature customization modes. Also used by service technicians during the BCM diagnostics. The BCM sounds the chime during the feature customization, and also during diagnostics. Refer to Body Control Module (BCM) for additional information.

Step
Action
Value(s)
Yes
No
1
Was the BCM diagnostic system check performed?
--
YES - Go to Step 2
NO - Go to Diagnostic System Check - Body Control System in Body Control System
2
Check for Powertrain Control Module (PCM) Diagnostic Trouble Codes (DTCs). Refer to Powertrain On Board Diagnostic (OBD) System Check (LX5) or Powertrain On Board Diagnostic (OBD) System Check (L36) in Engine Controls for more information.
Are there any PCM DTCs present?
--
Go to Appropriate DTC Table in Engine Controls
Go to Step 3
3
Connect a scan tool to the Data Link Connector (DLC).
Using scan tool, select BCM data display inputs and monitor the park brake switch input.
While observing the scan tool, apply and then release the park brake.
Does the scan tool indicate that the park brake input is off while the park brake is released?
--
Go to Step 7
Go to Step 4
4
Turn the ignition switch off.
Disconnect the scan tool from the DLC.
Disconnect the BCM connector C1.
Release the park brake.
Using a test light, connect between B+ and the BCM connector C1 terminal D5.
Is the test light off?
--
Go to Step 7
Go to Step 5

Your best bet ,take it to a qualified repair shop

The light will go off as soon as the light or the circuit to the light is repaired, if it is still on and the brake lights work correctly, meaning bright normal not dim looking then the monitor for the lamp out warning is defective, they are very pricey would take the bulbs out if i where you.