2023 JEEP GRAND CHEROKEE trailer

258SAFETY
AUXILIARY DRIVING SYSTEMS
BLIND SPOT MONITORING (BSM)
BSM system uses two radar sensors, located
inside the rear fascia/bumper, to detect highway
licensable vehicles (automobiles, trucks,
motorcycles, etc.) that enter the blind spot zones
from the rear/front/side of the vehicle.

Rear Detection Zones

When the vehicle is started, the BSM Warning Light
will momentarily illuminate in both outside
rearview mirrors to let the driver know that the
system is operational. The BSM system sensors
operate when the vehicle is in any forward gear. The BSM detection zone covers approximately one
lane in width on both sides of the vehicle 12 ft
(3.8 m). The zone length starts at the side of the
vehicle, near the B-pillar, and extends
approximately 10 ft (3 m) beyond the rear fascia/
bumper of the vehicle. The BSM system monitors
the detection zones on both sides of the vehicle
when the vehicle speed reaches approximately
6 mph (10 km/h) or higher and will alert the driver
of vehicles in these areas. BSM will alert earlier on
faster-approaching vehicles — up to 33 mph
(54 km/h) difference.
NOTE:The BSM system detection zone DOES NOT change
if your vehicle is towing a trailer. Therefore, visually
verify the adjacent lane is clear for both your
vehicle and trailer before making a lane change. If
the trailer or other object (i.e., bicycle, sports
equipment) extends beyond the side of your
vehicle, this may result in random false detections
on the trailer, and false chimes when the turn
signal is used Ú
page 204. The BSM system can become blocked if snow, ice,
mud, or other road contaminations accumulate on
the rear fascia/bumper where the radar sensors
are located. The system may also detect blockage
if the vehicle is operated in areas with extremely
low radar returns such as a desert or parallel to a
large elevation drop. If blockage is detected, a
“Blind Spot Temporarily Unavailable, Sensor
Blocked” message will display in the cluster, both
mirror lights will illuminate, and BSM and RCP
alerts will not occur. This is normal operation. The
system will automatically recover and resume
function when the condition clears or when an
ignition cycle occurs. To minimize system
blockage, do not block the area of the rear fascia/
bumper where the radar sensors are located with
foreign objects (bumper stickers, bicycle racks,
etc.) and keep it clear of road contaminations.

Sensor Location (Left Side Shown)

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326IN CASE OF EMERGENCY
TOWING A DISABLED VEHICLE
This section describes procedures for towing a disabled vehicle using a commercial towing service.
If the transmission and drivetrain are operable, disabled 4x4 vehicles may also be towed as described on Ú page 195.
Proper towing or lifting equipment is required to prevent damage to your vehicle. Use only tow bars and other equipment designed for this purpose, following
equipment manufacturer’s instructions. Use of safety chains is mandatory. Attach a tow bar or other towing device to main structural members of the vehicle,
not to fascia/bumpers or associated brackets. State and local laws regarding vehicles under tow must be observed.
Towing Condition Wheels OFF The Ground Two-Wheel Drive Models Four-Wheel Drive Models
Without 4WD Low Range Four-Wheel Drive Models
With 4WD Low Range
Flat Tow NONENOT ALLOWEDNOT ALLOWEDSee Instructions
Transmission in PARK
Transfer case in N
(NEUTRAL)
Tow in forward direction
Dolly Tow Front
NOT ALLOWEDNOT ALLOWEDNOT ALLOWED
Rear OKNOT ALLOWEDNOT ALLOWED
On Trailer ALLOKOKOK

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330
SERVICING AND MAINTENANCE
SCHEDULED SERVICING
Your vehicle is equipped with an automatic oil
change indicator system. The oil change indicator
system will remind you that it is time to take your
vehicle in for scheduled maintenance.
Based on engine operation conditions, the oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Operating conditions such as frequent short-trips,
trailer tow, extremely hot or cold ambient
temperatures, and E85 fuel usage will influence
when the “Oil Change Required” message is
displayed. Have your vehicle serviced as soon as
possible, within the next 500 miles (805 km).An authorized dealer will reset the oil change
indicator message after completing the scheduled
oil change.
NOTE:Under no circumstances should oil change
intervals exceed 10,000 miles (16,000 km),
12 months or 350 hours of engine run time,
whichever comes first. The 350 hours of engine
run or idle time is generally only a concern for fleet
customers.
Once A Month Or Before A Long Trip:
Check engine oil level.
Check windshield washer fluid level.
Check the tire inflation pressures and look for
unusual wear or damage.
Check the fluid levels of the coolant reservoir,
brake master cylinder and fill as needed.
Check function of all interior and exterior lights.

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332SERVICING AND MAINTENANCE
Inspect the front and rear axle fluid,
change if using your vehicle for police,
taxi, fleet, off-road or frequent trailer
towing. X
X XXX
Inspect the brake linings, parking brake
function. X
X X XX XX
Inspect transfer case fluid. XX XXX
Additional Maintenance
Replace engine air cleaner filter. XX XXX
Replace the cabin air filter. To be replaced every 12,000 miles (19,000 km).
Replace spark plugs — 2.0L.
1X X
Replace spark plugs — 3.6L & 5.7L.
1X
Flush and replace the engine coolant at
10 years or 150,000 miles (240,000 km)
whichever comes first. X
X
Replace accessory drive belt. X
Mileage Or Time Passed
(Whichever Comes First)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000

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SERVICING AND MAINTENANCE333
Inspect accessory drive belt tensioner
and pulley, replace if necessary. X
Change transfer case fluid - Normal
Usage. X
Change transfer case fluid — Severe
Usage (police, taxi, fleet, off-road, or
frequent trailer towing.) X
X
Replace PCV valve. X
1. The spark plug change interval is mileage-based only, yearly intervals do not apply.
Mileage Or Time Passed
(Whichever Comes First)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
WARNING!
You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the right equipment. If you have
any doubt about your ability to perform a service job, take your vehicle to a competent mechanic.
Failure to properly inspect and maintain your vehicle could result in a component malfunction and affect vehicle handling and performance. This could cause
an accident.
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362SERVICING AND MAINTENANCE
F10 40 Amp Green –HVAC Blower Motor
F11 ––Spare
F12 –20 Amp YellowAssy Cigar Lighter
F13 –10 Amp RedAssy Mirror Inside Rearview / Digital
TV (DTV) */ Sunroof Single - Dual
Pane / Port UC1 Dual USB RR /
Interior Monitoring Camera
F14 ––Spare
F15A ––Spare
F15B ––Spare
F16 –10 Amp RedMOD ORC
F17 ––Spare
F18 ––Spare
F19 ––Spare
F20 –10 Amp RedOverhead Console Assy (OHC) W/
Sunshade / Intrusion Module /
Intrusion Sensor / Siren / Head Up
Display (HUD) / Digital TV (DTV) *
F21 30 Amp Pink –Trailer Tow Electric Brake -
Aftermarket
F22 ––Spare
F23 ––Spare
Cavity Cartridge Fuse Micro FuseDescription

* If Equipped

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364SERVICING AND MAINTENANCE
F41A –10 Amp RedMOD Occupant Class / Steering
Column Lock
F41B Spare
F42A –10 Amp RedParktronics System MOD (PTS) / MOD
Haptic Lane Feedback / Trailer Tow
Module
F42B MOD HVAC Control / Frt ERC Motor
Ctrl / RR ERC Motor Ctrl
F43A ––Spare
F43B ––Spare
F44 –15 Amp BlueMOD Cluster CCN / MOD SGW
(Cybersecurity)
F45 ––Spare
F46 ––Spare
F47A ––Spare
F47B ––Spare
F48A ––Spare
F48B ––Spare
F49 –7.5 Amp BrownMOD RF HUB / Module Ignition
(MD KIN)
Cavity
Cartridge Fuse Micro FuseDescription

* If Equipped

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SERVICING AND MAINTENANCE369
F29A –10 Amp RedMOD ICS Switch Bank Rear (Frt
Console)
F29B Spare
F30 30 Amp Pink –MOD Memory / Power Seat (Driver
Frt)
F31 ––Spare
F32 ––Spare
F33 ––Spare
F34 30 Amp Pink –MOD Door MUX Driver
F35 25 Amp Clear –Trailer Tow Module #2
F36A –10 Amp RedIntelligent Event Base Lighting
Module
F36B Port Pwr USB Console (USB CH Only) /
Port UCI Dual USB Rear
F37 25 Amp Clear –Trailer Tow Module #1
F38 ––Spare
F39 ––Spare
F40 –30 Amp GreenMod Audio Amplifier #1A
F41 ––Spare
Cavity Cartridge Fuse Micro FuseDescription
* If Equipped
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