wheel torque DODGE CHALLENGER SRT 2018 Owners Manual

WARNING!
The Brake Assist System (BAS) cannot prevent the
natural laws of physics from acting on the vehicle, nor
can it increase the traction afforded by prevailing road
conditions. BAS cannot prevent collisions, including
those resulting from excessive speed in turns, driving
on very slippery surfaces, or hydroplaning. The capa-
bilities of a BAS-equipped vehicle must never be
exploited in a reckless or dangerous manner, which
could jeopardize the user’s safety or the safety of
others.
Brake System Warning Light
The red “Brake System Warning Light” will turn on when
the ignition is turned to the ON/RUN mode and may stay
on for as long as four seconds.
If the “Brake System Warning Light” remains on or comes
on while driving, it indicates that the brake system is not
functioning properly and that immediate service is re-
quired. If the “Brake System Warning Light” does not come
on when the ignition is turned to the ON/RUN mode, have
the light repaired as soon as possible.
Electronic Brake Force Distribution (EBD)
This function manages the distribution of the braking
torque between the front and rear axles by limiting braking
pressure to the rear axle. This is done to prevent overslip of
the rear wheels to avoid vehicle instability, and to prevent
the rear axle from entering ABS before the front axle.
Electronic Roll Mitigation (ERM)
This system anticipates the potential for wheel lift by
monitoring the driver ’s steering wheel input and the speed
of the vehicle. When ERM determines that the rate of
change of the steering wheel angle and vehicle’s speed are
sufficient to potentially cause wheel lift, it then applies the
appropriate brake and may also reduce engine power to
lessen the chance that wheel lift will occur. ERM can only
reduce the chance of wheel lift occurring during severe or
evasive driving maneuvers; it cannot prevent wheel lift
due to other factors, such as road conditions, leaving the
roadway, or striking objects or other vehicles.
NOTE:ERM is disabled anytime the ESC is in “Full Off”
mode (if equipped). Refer to “Electronic Stability Control
(ESC)” in this section for a complete explanation of the
available ESC modes.
130 SAFETY

Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, the TCS may
apply brake pressure to the spinning wheel(s) and/or
reduce engine power to provide enhanced acceleration and
stability. A feature of the TCS, Brake Limited Differential
(BLD), functions similar to a limited slip differential and
controls the wheel spin across a driven axle. If one wheel
on a driven axle is spinning faster than the other, the
system will apply the brake of the spinning wheel. This
will allow more engine torque to be applied to the wheel
that is not spinning. BLD may remain enabled even if TCS
and ESC are in a reduced mode.
AUXILIARY DRIVING SYSTEMS
Blind Spot Monitoring (BSM) — If Equipped
The Blind Spot Monitoring (BSM) system uses two radar
sensors, located inside the rear bumper fascia, to detect
highway licensable vehicles (automobiles, trucks, motor-
cycles, etc.) that enter the blind spot zones from the
rear/front/side of the vehicle.When the vehicle is started, the BSM warning light will
momentarily illuminate in both outside rear view mirrors
to let the driver know that the system is operational.
Automatic Transmission Vehicles
The BSM system sensors operate when the vehicle is in any
forward gear or REVERSE.
Rear Detection Zones
138 SAFETY

NOTE:Refer to “SRT Drive Modes” in “Multimedia” for
further descriptions of these modes.
Launch Mode
This vehicle is equipped with a Launch Mode system that
is designed to allow the driver to achieve maximum
vehicle acceleration in a straight line. Launch Mode is a
form of traction control that manages tire slip while
launching the vehicle. This feature is intended for use
during race events on a closed course where consistent
quarter mile and zero to sixty times are desired. The system
is not intended to compensate for lack of driver experience
or familiarity with the race track. Use of this feature in low
traction (cold, wet, gravel, etc.) conditions may result in
excess wheel slip outside of this system’s control, resulting
in an aborted launch.
NOTE:
• Launch mode is not available within the first 500 miles
of engine break-in.
• Torque Reserve is implemented during Launch Mode, so
you may notice different engine/exhaust sounds and
increased NVH. Preconditions:
•
Launch Mode should not be used on public roads.
Always check track conditions and the surrounding
area.
• Launch mode is not available within the first 500 miles
of engine break-in.
• Launch Mode should only be used when the engine and
transmission are at operating temperature.
• Launch Mode is intended to be used on dry, paved road
surfaces only. Use on slippery or loose surfaces may
cause damage to vehicle components and is not recom-
mended.
Automatic Transmission — If Equipped
Launch Mode is only available when the following proce-
dure is followed:
1. Push the LAUNCH button on the center stack switch bank.
NOTE: Pushing the SRT button on the center stack or
pressing Race Options within Drive Modes, then selecting
the Launch Control tab, followed by the soft, Launch
Control button are two other options to access launch
230 STARTING AND OPERATING

TECHNICAL SPECIFICATIONS
CONTENTS
IDENTIFICATION DATA ...................374
▫ Vehicle Identification Number .............374
 BRAKE SYSTEM ....................... .374
 WHEEL AND TIRE TORQUE SPECIFICATIONS . .375
▫ Torque Specifications ....................375
 FUEL REQUIREMENTS ...................376
▫ 6.2L Supercharged Engine .................376
▫ 6.4L Engine .......................... .377
▫ Reformulated Gasoline ..................377
▫ Materials Added To Fuel .................377 ▫
Gasoline/Oxygenate Blends ...............378
▫ Do Not Use E-85 In Non-Flex Fuel Vehicles . . . .379
▫ CNG And LP Fuel System Modifications ......379
▫ MMT In Gasoline ...................... .379
▫ Fuel System Cautions ....................379
▫ Carbon Monoxide Warnings ...............380
 FLUID CAPACITIES ..................... .381
 FLUIDS AND LUBRICANTS ................382
▫ Engine ............................. .382
▫ Chassis ............................ .384
9

In the event power assist is lost for any reason (for
example, repeated brake applications with the engine
OFF), the brakes will still function. The effort required to
brake the vehicle will be much greater than that required
with the power system operating.
NOTE:Your vehicle is equipped with a high performance
braking system. The brake pads are a semi-metallic com-
pound, which offer superior fade resistance for consistent
operation. A compromise to using this type of brake pad is
that the brakes may produce more brake dust and may
squeal slightly under certain weather and operating con-
ditions (i.e., during light brake applications). These are
considered normal conditions.
WHEEL AND TIRE TORQUE SPECIFICATIONS
Proper lug nut/bolt torque is very important to ensure that
the wheel is properly mounted to the vehicle. Any time a
wheel has been removed and reinstalled on the vehicle, the
lug nuts/bolts should be torqued using a properly cali-
brated torque wrench using a high quality six sided (hex)
deep wall socket.
Torque Specifications
Lug Nut/Bolt Torque **Lug Nut/Bolt
Size Lug Nut/Bolt
Socket Size
111 Ft-Lbs (150 N·m) M14 x 1.50 22 mm
**Use only your authorized dealer recommended lug nuts/
bolts and clean or remove any dirt or oil before tightening.
Inspect the wheel mounting surface prior to mounting the
tire and remove any corrosion or loose particles.
Wheel Mounting Surface
9
TECHNICAL SPECIFICATIONS 375

Tighten the lug nuts/bolts in a star pattern until each
nut/bolt has been tightened twice. Ensure that the socket is
fully engaged on the lug nut/bolt (do not insert it half-
way).
NOTE:If in doubt about the correct tightness, have them
checked with a torque wrench by your authorized dealer or
service station.
After 25 miles (40 km), check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly seated against
the wheel.WARNING!
To avoid the risk of forcing the vehicle off the jack, do
not tighten the lug nuts fully until the vehicle has been
lowered. Failure to follow this warning may result in
personal injury.
FUEL REQUIREMENTS
6.2L Supercharged Engine
Do not use E-85 flex fuel or ethanol blends greater than
15% in this engine.
These engines are designed to meet all
emissions regulations, provide optimal
fuel economy and performance when
using high-quality unleaded “Pre-
mium” gasoline having a posted octane
number of 91 as specified by the
(R+M)/2 method. The use of 91 or
higher octane “Premium” gasoline is required in these
engines.
While operating on gasoline with the required octane
number, hearing a light knocking sound from the engine is
not a cause for concern. However, if the engine is heard
Torque Patterns
376 TECHNICAL SPECIFICATIONS

Wheel, Heated...........................53
Wheel, Tilt ..............................52
Steering Wheel Audio Controls .................441
Steering Wheel Mounted Sound System Controls . . . .441
Storage ................................. .368
Storage, Vehicle ........................ .73, 368
Storing Your Vehicle ....................... .368
Stuck, Freeing ............................ .309
Sun Roof .................................77
Supplemental Restraint System – Air Bag ..........169
Synthetic Engine Oil ....................... .325
Telescoping Steering Column ...................52
Temperature Control, Automatic (ATC) ............72
Tilt Steering Column .........................52
Time Delay Headlight ...............................60
Tire And Loading Information Placard ............350
Tire Markings ............................ .345
Tires......................... .203, 354, 361, 367
Aging (Life Of Tires) ..................... .358
Air Pressure ........................... .354
Chains ............................... .365
Changing ............................. .344
Compact Spare ......................... .362General Information
...................354, 361
High Speed ............................ .356
Inflation Pressure ....................... .355
Jacking ............................... .344
Life Of Tires ........................... .358
Load Capacity ...................... .350, 351
Pressure Monitoring System (TPMS) ........118,148
Quality Grading ........................ .367
Radial ............................... .356
Replacement ........................... .359
Rotation .............................. .365
Safety ............................ .344, 354
Sizes ................................ .346
Snow Tires ............................ .361
Spar

e Tires ......................... .361, 363
Spinning .............................. .357
Tread Wear Indicators .....................358
Wheel Nut Torque ....................... .375
Tire Safety Information ...................... .344
Tire Service Kit ............295, 296, 297, 298, 301, 302
To Open Hood .............................80
Towing ................................. .270
Disabled Vehicle ...................310, 311, 312
Recreational ........................... .270
Towing Behind A Motorhome ..................270
480 INDEX