maintenance JEEP COMPASS 2023 Owner's Guide

282SERVICING AND MAINTENANCE
(Continued)
Do not overfill the coolant expansion bottle.
Check the coolant freeze point in the radiator
and in the coolant expansion bottle. If engine
coolant needs to be added, the contents of the
coolant expansion bottle must also be protected
against freezing.
If frequent engine coolant additions are
required, the cooling system should be pressure
tested for leaks.
Maintain engine coolant concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corro-
sion protection of your engine which contains
aluminum components.
Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning, keep
the front of the condenser clean.
Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically. For the proper maintenance intervals
Ú page 268.
Brake Master Cylinder
The fluid in the master cylinder should be checked
when performing under hood services or
immediately if the Brake Warning Light is
illuminated.
Be sure to clean the top of the master cylinder area
before removing the cap. If necessary, add fluid to
bring the fluid level up to the requirements
described on the brake fluid reservoir. With disc
brakes, fluid level can be expected to fall as the
brake pads wear. Brake fluid level should be
checked when pads are replaced. However, low
fluid level may be caused by a leak and a checkup
may be needed. Use only the manufacturer recommended brake
fluid Ú
page 324.
WARNING!

Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear,
and possible brake damage. You would not have
your full braking capacity in an emergency.

WARNING!
Use only the manufacturer recommended
brake fluid Úpage 324. Using the wrong type
of brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake 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 prolonged
braking, resulting in sudden brake failure.
This could result in a collision.
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.

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SERVICING AND MAINTENANCE283
AUTOMATIC TRANSMISSION —
I
F EQUIPPED
Special Additives
It is strongly recommended against using any
special additives in the transmission. Automatic
Transmission Fluid (ATF) is an engineered product
and its performance may be impaired by
supplemental additives. Therefore, do not add any
fluid additives to the transmission. The only
exception to this policy is the use of special dyes
for diagnosing fluid leaks in 6-speed
transmissions. Avoid using transmission sealers as
they may adversely affect seals.
Fluid Level Check
The fluid level is preset at the factory and does not
require adjustment under normal operating
conditions. Routine fluid level checks are not
required; therefore the transmission has no
dipstick. An authorized dealer can check your
transmission fluid level using special service tools.
If you notice fluid leakage or transmission
malfunction, visit an authorized dealer
immediately to have the transmission fluid level
checked. Operating the vehicle with an improper
fluid level can cause severe transmission damage.
Fluid And Filter Changes
Under normal operating conditions, the fluid
installed at the factory will provide satisfactory
lubrication for the life of the vehicle.
Routine fluid and filter changes are not required.
However, change the fluid and filter if the fluid
becomes contaminated (with water, etc.), or if the
transmission is disassembled for any reason.
Selection Of Lubricant
It is important to use the proper transmission fluid
to ensure optimum transmission performance and
life. Use only the manufacturer specified
transmission fluid Ú page 324. It is important to
maintain the transmission fluid at the correct level
using the recommended fluid.
NOTE:No chemical flushes should be used in any trans -
mission; only the approved lubricant should be
used.
Do not allow petroleum-based fluid to contam -
inate the brake fluid. Brake seal components
could be damaged, causing partial or
complete brake failure. This could result in a
collision.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage your
transmission components. Such damage is not
covered by the New Vehicle Limited Warranty.
WARNING!
CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An authorized
dealer has the proper tools to adjust the fluid
level accurately.
CAUTION!
Using a transmission fluid other than the
manufacturer recommended fluid may cause
deterioration in transmission shift quality and/or
torque converter shudder. For fluid
specifications Ú page 324.
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284SERVICING AND MAINTENANCE
(Continued)
FUSES
General Information
The fuses protect electrical systems against
excessive current.
When a device does not work, you must check the
fuse element inside the blade fuse for a break/
melt.
Also, please be aware that using power outlets for
extended periods of time with the engine off may
result in vehicle battery discharge.
Blade Fuses

Fuse Location
The fuses are grouped into controllers located in
the engine compartment.
WARNING!
When replacing a blown fuse, always use an
appropriate replacement fuse with the same
amp rating as the original fuse. Never replace
a fuse with another fuse of higher amp rating.
Never replace a blown fuse with metal wires or
any other material. Do not place a fuse inside
a circuit breaker cavity or vice versa. Failure to
use proper fuses may result in serious
personal injury, fire and/or property damage.
Before replacing a fuse, make sure that the
ignition is off and that all the other services
are switched off and/or disengaged.
If the replaced fuse blows again, contact an
authorized dealer.
If a general protection fuse for safety systems
(air bag system, braking system), power unit
systems (engine system, transmission
system) or steering system blows, contact an
authorized dealer.
WARNING!
1 — Fuse Element
2 — Blade Fuse with a good/functional fuse
element
3 — Blade fuse with a bad/not functional fuse
element (blown fuse)

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SERVICING AND MAINTENANCE285
Power Distribution Center/Fuses
The Front Power Distribution Center is located in the engine compartment. This module contains fuses and relays. Fuse cavity location are printed on the inside
of the power distribution center cover.
Underhood Power Distribution Location
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286SERVICING AND MAINTENANCE
Cavity Cartridge Fuse Mini Fuse Description
* If Equipped
F01 50 Amp Red (Gas)
–Transmission Smart Driver Unit (TDSU) (Gas)
60 Amp Blue (Diesel) DCTT SDU BATT Glow Plug (Diesel)
F03 40 Amp Orange –PTC Feed 1*
F04 30 Amp Tan –Rear Defroster (EBL)*
F05 – ––
F06 40 Amp Orange –TTM*
F07 40 Amp Orange –SCR*
F08 20 Amp Yellow –SLM Feed LT*
F09 30 Amp Tan –AGSM / DCSM / TCM / DTCM / SCCM
F10 20 Amp Yellow –SLM Feed RT*
F11 20 Amp Yellow –BCM Feed 3 / (Run / Start & FB Relay and / Start / Stop & FB Relay in BCM)
F12 40 Amp Orange –BSM Pump
F13 40 Amp Orange –BSM Valves
F14 40 Amp Orange –Diesel Filter Heater*
F15 40 Amp Orange –Starter Motor Solenoid Fuse
F16 40 Amp Orange –Starter Motor Solenoid *
F17 40 Amp Orange –HVAC Fan
F18 – ––
F19 –2 Amp Grey Steering Column Control Module (SCCM)
F20 –7.5 Amp Brown Engine Control Module (ECM) / Radiator Fan Relay Coil

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SERVICING AND MAINTENANCE287
F21 – ––
F22 –7.5 Amp Brown AC Compressor
F23 – ––
F24 –7.5 Amp Brown Side Mirrors Defrost *
F25 –20 Amp Yellow LT HID Lamp
F26 –20 Amp Yellow Lumbar Adjust (Driver Seat Only)*

F27 –25 Amp Clear
20 Amp Yellow Engine Control Module (ECM) / Fuel Injectors
F28 – ––
F29A & B –––
F30 –20 Amp Yellow RT HID Lamp
F31 –15 Amp Blue Wireless Charging Pad / SW Bank Lower 2 / SW Bank Lower LT & RT
F32 –20 Amp Yellow (Gas) Fuel Injectors / Ignition Coils / Ignition Coil Capacitors (Gas Engine)
15 Amp Blue (Diesel) UEGO (02) Sensor – Upstream & Downstream / Glow Plug Module / Oil Pump /
Mass Airflow Sensor / EGR Cooling Bypass / Swirl Actuator / SNSR UEGO DSL Upstream /
Pump UREA Cooling (Diesel Engine)
F33 –10 Amp Red Relay Coil Power Control Relay 2.4 Dual battery application only (XHZ)
F34A & B –––
F35 – ––
F36 –10 Amp Red Port UCI2 / Mod CVPM
Cavity Cartridge Fuse Mini Fuse Description
* If Equipped
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288SERVICING AND MAINTENANCE
F37 – ––
F38 –10 Amp Red ECM / TCM / AGSM / DCSM / STM
F39 – ––
F40 – ––
F41 – ––
F42 –20 Amp Yellow Cargo Power Outlet – Ignition power
F43 – –Cargo Power Outlet (Can be replaced with 20 Amp fuse in F42 direct battery power)
F44 – ––
F45 – ––
F46 –30 Amp Tan Drivetrain Control Module (DTCM) AWD Power
F47 –30 Amp Tan Front Windshield Defrost*
F48 – ––
F49 –15 Amp Blue Transmission Control Module (TCM)
F50 –5 Amp Tan Drive Train Control Module (DTCM) ECU Power
F51 –20 Amp Yellow NOX SNSR Feed (Diesel Engine)
F52 –5 Amp Tan Automatic Gearbox Shifter Module (AGSM) (Diesel & Gas)
F53 – ––
F54 – ––
F55 – ––
F56 – ––
Cavity Cartridge Fuse Mini Fuse Description
* If Equipped

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SERVICING AND MAINTENANCE289
F57 –20 Amp Yellow RR Power Outlet (12 Volt APO)
F58 – ––
F59 – ––
F60 – ––
F61 –20 Amp Yellow Fuel Pump
F62 –5 Amp Tan Intelligent Battery Sensor (IBS)
F63 – ––
F64 –10 Amp Red MOD DCSD / Hands-Free Liftgate / UCI + USB Port
F65 –20 Amp Yellow Horn
F66 –20 Amp Yellow Cigar Lighter*
F67 –10 Amp Red Engine Control Module (ECM)
Cavity Cartridge Fuse Mini Fuse Description
* If Equipped
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290SERVICING AND MAINTENANCE
Interior Fuses
The interior fuse panel is located in the passenger compartment on the left side dash panel under the instrument panel.
CavityBlade Fuse Description
*If Equipped
F31 7.5 Amp Brown Occupant Restraint Controller
F33 20 Amp Yellow Window Motor Passenger
F34 20 Amp Yellow Window Motor Driver
F36 20 Amp YellowIntrusion Module/Siren, Radio, UCI/USB Port, VSU, Climate Control,
Electronic Steering Lock, Power Folding Mirrors, Security Gateway/DTV
F37 10 Amp RedInstrument Panel Cluster, Drivetrain Control Module, Adaptive Cruise,
ECC (HVAC) Blower
F38 20 Amp Yellow Door Lock/Unlock, Liftgate Release
F42 7.5 Amp Brown Brake System Module, Electric Power Steering
F43 20 Amp Yellow Washer Pump Front And Rear
F47 20 Amp Yellow Rear Left Window Lifter
F48 20 Amp Yellow Rear Right Window Lifter
F49 7.5 Amp BrownPark Assist, Blind Spot, Voltage Stabilizer, Humidity Sensor, Electronic Steering Lock,
Temp Sense, Mirror, Heated Seats, Light And Rain Sensor, Start Stop Switch
F50 7.5 Amp Brown Occupant Restraint Controller
F51 7.5 Amp BrownElectronic Climate Control, Occupant Classification, Rear View Camera, Climate Control,
Headlamp Leveling, Terrain Select, Heated Rear Window, Trailer Tow, Haptic Lane Mod
F53 7.5 Amp Brown Keyless Ignition Node Module, Electric Park Brake, RF Hub, Cluster
F94 15 Amp Blue Lumbar Adjust Driver Seat, Power Outlets

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SERVICING AND MAINTENANCE291
BULB REPLACEMENT
Replacement Bulbs, Names, And Part Numbers
In the instance a bulb needs to be replaced, this section includes bulb description and replacement part numbers.
NOTE:See an authorized dealer for LED bulb replacement.
Interior Bulbs
Lamps Bulb Number
Front Courtesy Light C5W
Front Courtesy Lights (Sun Visors) C5W
Rear Dome Light (Models Without Retractable roof) C5W
Rear Interior Lights (Models With Retractable roof) C5W
Interior Lights HT-168
Dome Light (Glove Box) HT-168
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