wheel torque FIAT 500C 2015 2.G Owners Manual

Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system, 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. This feature remains
active even if TCS and ESC are in the Partial Off mode.
Refer to “Electronic Stability Control (ESC)” in this
section for further information.
Hill Start Assist (HSA)
The HSA system is designed to assist the driver when
starting a vehicle from a stop on a hill. HSA will maintainthe level of brake pressure the driver applied for a short
period of time after the driver takes his foot off the brake
pedal. If the driver does not apply the throttle during this
short period of time, the system will release brake
pressure and the vehicle will roll down the hill. The
system will release brake pressure in proportion to the
amount of throttle applied as the vehicle starts to move in
the intended direction of travel.
HSA Activation Criteria
The following criteria must be met in order for HSA to
activate:
•
Vehicle must be stopped.
• Vehicle must be on a 2.5% (manual transmission) or 7%
grade or greater (automatic transmission) hill.
• Gear selection matches vehicle uphill direction (i.e.,
vehicle in NEUTRAL (manual transmission), vehicle
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WHAT TO DO IN EMERGENCIES
CONTENTS
HAZARD WARNING FLASHERS ...........303
 IF YOUR ENGINE OVERHEATS ............303
 TIRE SERVICE KIT — IF EQUIPPED .........304
▫ Tire Service Kit Storage .................305
▫ Tire Service Kit Components And Operation . .305
▫ Tire Service Kit Usage Precautions ..........306
▫ Sealing A Tire With Tire Service Kit .........309
 WHEEL AND TIRE TORQUE
SPECIFICATIONS ..................... .315
▫ Torque Specifications ...................315 
JACKING AND TIRE CHANGING — IF
EQUIPPED .......................... .316
▫ Jack Location ....................... .317
▫ Spare Tire Removal ....................318
▫ Preparations For Jacking ................320
▫ Jacking Instructions ...................321
▫ Road Tire Installation ...................327
▫ Spare Tire Stowage ....................329
 JUMP-STARTING PROCEDURE ............329
▫ Preparations For Jump-Start ..............330
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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 calibrated torque wrench.
Torque Specifications
Lug Nut/Bolt Torque **Lug Nut/Bolt SizeLug Nut/
Bolt Socket Size
66 Ft-Lbs (90 N·m)
Steel Wheels Only
75 Ft-Lbs (100 N·m) Aluminum Wheels Only M12 x 1.25 17 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
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Tighten the lug nuts/bolts in a star pattern until each
nut/bolt has been tightened twice.
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.
JACKING AND TIRE CHANGING — IF EQUIPPED
WARNING!
•Do not attempt to change a tire on the side of the
vehicle close to moving traffic. Pull far enough off
the road to avoid the danger of being hit when
operating the jack or changing the wheel.
• Being under a jacked-up vehicle is dangerous. The
vehicle could slip off the jack and fall on you. You
could be crushed. Never put any part of your body
(Continued)
Torque Patterns
316 WHAT TO DO IN EMERGENCIES

9. Finish tightening the wheel bolts. Push down on thewrench while at the end of the handle for increased
leverage. Tighten the wheel bolts in a star pattern until
each bolt has been tightened twice. For the correct
wheel bolt torque refer to Torque Specifications in this
section. If in doubt about the correct tightness, have
them checked with a torque wrench by your autho-
rized dealership or service station.
10. Disassemble the jack and tools and place them in the bag. Stow it under the driver’s seat and secure the
bag to the floor with the straps attached to the floor
of the vehicle.WARNING!
A loose tire or jack thrown forward in a collision or
hard stop could endanger the occupants of the ve-
hicle. Always stow the jack parts and the spare tire in
the places provided.
11. Place the deflated (flat) tire in the cargo area. Have the tire repaired or replaced as soon as possible.
WARNING!
A loose tire thrown forward in a collision or hard
stop could injure the occupants in the vehicle. Have
the deflated (flat) tire repaired or replaced immedi-
ately.
12. Check the spare tire pressure as soon as possible. Correct the tire pressure as required.
326 WHAT TO DO IN EMERGENCIES

3. Install the four wheel bolts with the cone shaped endof the nut toward the wheel. Lightly tighten the wheel
bolts.
WARNING!
To avoid the risk of forcing the vehicle off the jack,
do not tighten the wheel bolts fully until the vehicle
has been lowered. Failure to follow this warning may
result in personal injury.
4. Lower the vehicle to the ground by turning the jack handle counterclockwise.
5. Finish tightening the wheel bolts. Push down on the wrench while at the end of the handle for increased
leverage. Refer to “Torque Specifications” in this sec-
tion for correct wheel bolt torque. 6. After 25 miles (40 km) check the wheel bolt torque
with a torque wrench to ensure that all wheel bolts are
properly seated against the wheel.
Vehicles Without Wheel Covers
1. Mount the road tire on the axle.
2. Install the remaining wheel bolts with the cone shapedend of the nut toward the wheel. Lightly tighten the
wheel bolts.
WARNING!
To avoid the risk of forcing the vehicle off the jack,
do not fully tighten the lug nuts until the vehicle has
been lowered. Failure to follow this warning may
result in serious injury.
3. Lower the vehicle to the ground by turning the jack handle counterclockwise.
328 WHAT TO DO IN EMERGENCIES

4. Finish tightening the wheel bolts. Push down on thewrench while at the end of the handle for increased
leverage. Refer to “Torque Specifications” in this sec-
tion for correct wheel bolt torque.
5. After 25 miles (40 km) check the wheel bolt torque with a torque wrench to ensure that all wheel bolts are
properly seated against the wheel.
Spare Tire Stowage
Reverse instructions of the spare removal section.
Rotate the jack wrench tool on the winch drive nut
clockwise until effort becomes heavy and an audible click
is heard indicating the spare is properly stowed.
CAUTION!
The winch mechanism is designed for use with the
jack wrench extension tool only. Use of air wrench or
power tool may damage the winch.
JUMP-STARTING PROCEDURE
If your vehicle has a discharged battery, it can be jump-
started using a set of jumper cables and a battery in
another vehicle or by using a portable battery booster
pack. Jump-starting can be dangerous if done improperly
so please follow the procedures in this section carefully.
NOTE: When using a portable battery booster pack,
follow the manufacturer ’s operating instructions and
precautions.
WARNING!
Do not attempt jump-starting if the battery is frozen.
It could rupture or explode and cause personal injury.
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