2017 FIAT 500C wheel torque

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.
• The BAS cannot prevent collisions, including
those resulting from excessive speed in turns,
driving on very slippery surfaces, or hydroplan-
ing.
• The capabilities 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.
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
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) hill.
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STARTING AND OPERATING 205

WHAT TO DO IN EMERGENCIES
CONTENTS
HAZARD WARNING FLASHERS ..........247
 IF YOUR ENGINE OVERHEATS ..........247
 TIRE SERVICE KIT — IF EQUIPPED ........248
▫ Tire Service Kit Storage ................248
▫
Tire Service Kit Components And Operation . .249
▫ Tire Service Kit Usage Precautions ........250
▫ Sealing A Tire With Tire Service Kit .......252
 WHEEL AND TIRE TORQUE
SPECIFICATIONS .....................256
▫ Torque Specifications ..................256
 JACKING AND TIRE CHANGING — IF
EQUIPPED ......................... .258
▫ Jack Location ...................... .258▫
Spare Tire Removal ...................259
▫ Preparations For Jacking ...............261
▫ Jacking Instructions ..................261
▫ Road Tire Installation ..................266
▫ Spare Tire Stowage ...................268
 JUMP-STARTING PROCEDURE ...........268
▫ Preparations For Jump-Start .............269
▫ Jump-Starting Procedure ...............270
 FREEING A STUCK VEHICLE ............271
 GEAR SELECTOR OVERRIDE ............272
 TOWING A DISABLED VEHICLE ..........274
▫ Automatic Transmission ................275
▫ Manual Transmission ..................275
6

5. Position the new Sealant Bottle (1) in the housing sothat the Sealant Hose (6) aligns with the hose slot in
the front of the housing. Push the bottle into the
housing. An audible click will be heard indicating
the bottle is locked into place.
6. Verify that the cap is installed on the fitting at the end of the Sealant Hose (6) and return the hose to its
storage area (located on the bottom of the air pump).
7. Return the Tire Service Kit to its storage location in the vehicle.
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
74 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.
256 WHAT TO DO IN EMERGENCIES

Inspect the wheel mounting surface prior to mounting
the tire and remove any corrosion or loose particles.
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.
Wheel Mounting Surface
Torque Patterns
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WHAT TO DO IN EMERGENCIES 257

6. Remove the wheel bolts and pull the wheel off thehub. For vehicles equipped with aluminum wheels,
the center caps must be removed to remove the
wheel bolts. For vehicles equipped with steel wheels
the wheel covers must be removed to remove the
wheel bolts.
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 serious injury.
• To avoid possible personal injury, handle the
wheel covers with care to avoid contact with any
sharp edges.
CAUTION!
Be sure to mount the spare tire with the valve stem
facing outward. The vehicle could be damaged if
the spare tire is mounted incorrectly.
7. Install the spare wheel and hand start the wheel bolts. Make sure to align the pins on the hub with the
small holes on 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 wheel bolts. Push down on the wrench 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 Specifica-
tions in this section. If in doubt about the correct
tightness, have them checked with a torque wrench
by your authorized 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
vehicle. Always stow the jack parts and the spare
tire in the places provided.
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WHAT TO DO IN EMERGENCIES 265

3. Lower the vehicle to the ground by turning the jackhandle counterclockwise.
4. 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
section 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.
6. Align the valve notch in the wheel cover with the valve stem on the wheel. Install the cover by hand.
Do not use a hammer or excessive force to install the
cover.
Vehicles Without Wheel Covers
1. Mount the road tire on the axle.
2. Install the remaining wheel bolts with the coneshaped end 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.
4. 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
section 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.
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WHAT TO DO IN EMERGENCIES 267