2015 FIAT 500 ABARTH wheel torque

wheel(s) and engine power is reduced to provide en-
hanced acceleration and stability. A feature of the TCS
system, Brake Limited Differential (BLD), functions simi-
lar 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 or Full Off mode. Refer to “Elec-
tronic 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 maintain
the 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) grade
hill.
•Gear selection matches vehicle uphill direction (i.e.,
vehicle in NEUTRAL [manual transmission], vehicle
facing uphill is in forward gear; vehicle backing uphill
is in REVERSE gear).
5
STARTING AND OPERATING 255

WHAT TO DO IN EMERGENCIES
CONTENTS
!HAZARD WARNING FLASHERS...........307
!IF YOUR ENGINE OVERHEATS............307
!TIRE SERVICE KIT — IF EQUIPPED.........308
▫Tire Service Kit Storage.................309
▫Ti reService Kit Components And Operation . . .309
▫Tire Service Kit Usage Precautions..........310
▫Sealing A Tire With Tire Service Kit.........313
!WHEEL AND TIRE TORQUE
SPECIFICATIONS......................319
▫Torque Specifications...................319
!JACKING AND TIRE CHANGING —
IF EQUIPPED.........................320
▫Jack Location........................321
▫Preparations For Jacking................322
▫Jacking Instructions...................323
6

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 Size
Lug 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 Chrysler 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
6
WHAT TO DO IN EMERGENCIES 319

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.
(Continued)
Torque Patterns
320 WHAT TO DO IN EMERGENCIES

WARNING!
To avoid the risk of forcing the vehicle off the jack,
do not fully tighten the wheel bolts until the vehicle
has been lowered. Failure to follow this warning may
result in personal injury.
7. Install the wheel and wheel bolts with the cone shaped
end of the bolts toward the wheel. Lightly tighten the
bolts. To avoid the risk of forcing the vehicle off the
jack, do not tighten the bolts fully until the vehicle has
been lowered.
8. Lower the vehicle by turning the jack screw to the left.
9. Finish tightening the bolts. Push down on the wrench
while tightening the wheel bolts. Alternate bolts until
each bolt has been tightened twice. Refer to “Torque
Specifications” in this section for proper lug bolt
torque. If you doubt that you have tightened the bolts
correctly, have them checked with a torque wrench by
your authorized dealer 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.
11. Check the tire pressure as soon as possible. Correct
the tire pressure as required.
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.
6
WHAT TO DO IN EMERGENCIES 327