fuel pressure VOLKSWAGEN CC 2008 Owners Manual

Tire inflation pressure label
A tire inflation pressure label is on the driver door jamb ⇒ Tires and
wheels.
Fuel grade sticker
An information sticker listing the correct fuel grade for your vehicle ⇒ 
Refueling.
Engine data

inflation pressure sensors ⇒  Tire Pressure Monitoring System
(TPMS).
Driving without valve caps, with the wrong valve caps, or with
valve caps that are not properly screwed on can damage the tire
valves and the sensors on the Tire Pressure Monitoring System
⇒  Tire Pressure Monitoring System (TPMS). To help prevent
damage, always use valve stem caps like those originally in-
stalled at the factory. The caps must be screwed on tightly. Do
not use metal valve caps or “comfort” valve stem caps.
Underinflation increases fuel consumption.
There may be differences between the pressure readings from a
tire pressure gauge and the pressures registered by the Tire Pressure
Monitoring System. The electronic Tire Pressure Monitoring System
is more accurate.
When the TPMS warns that the pressure in at least one tire is too
low, check the tire pressure in all 4 tires with an accurate tire pressure
gauge. Low tire pressure usually cannot be spotted by looking at the
tire. This is especially true for low-profile tires. When checking the tire
pressures, refer to ⇒  Tire Pressure Monitoring System (TPMS).
Tire inflation pressure in cold tires

Install summer tires promptly in the spring. Summer tires offer
better handling characteristics for temperatures above +45 °F (+7 °C).
They are quieter, do not wear as quickly, and reduce fuel consump-
tion.
If factory-installed wheels and/or tires are replaced when in-
stalling winter tires, make sure that the wheels are equipped with
sensors that are compatible with the factory-installed Tire Pressure
Monitoring System and that the tires are also compatible with the sys-
tem. If new tires are not identical to those that were removed and re-
quire different cold tire inflation pressure, the tire inflation pressure
values must be reprogrammed for the TPMS. Please see your author-
ized Volkswagen dealer or authorized Volkswagen Service Facility ⇒ 
The Tire Pressure Monitoring System must be recalibrated whenever
you remove and remount or change any wheel or tire on the vehicle,
even if the reinstalled or replacement wheels and tires are identical to
those that were removed and even if the tire pressure does not
change.
If necessary, ask your authorized Volkswagen dealer or author-
ized Volkswagen Service Facility about permissible winter tire dimen-
sions.
Snow chains

miles (kilometers) at low speeds in the 3 hour period before the tire
pressure is measured or adjusted.
Curb weight
The weight of a motor vehicle with standard equipment including the
maximum capacity of fuel, oil, and coolant, air conditioner, and addi-
tional weight of optional equipment.
Extra load tire
A tire designed to operate at higher loads and at higher inflation pres-
sures than the corresponding standard tire.
Gross Axle Weight Rating (GAWR)
The load-carrying capacity of a single axle system, measured where
the tire contacts the ground.
Gross Vehicle Weight Rating (GVWR)
The maximum loaded weight of the vehicle.
Groove
The space between 2 adjacent tread ribs.
Load rating (code)
The maximum load that a tire is rated to carry for a given inflation
pressure. You may not find this information on all tires because it is
not required by law.
Maximum load rating
The load rating for a tire at the maximum permissible inflation pres-
sure for that tire.
Maximum loaded vehicle weight
The total of:
Curb weight.
Accessory weight.
Vehicle capacity weight.
Production options weight.
Maximum (permissible) inflation pressure
The maximum cold inflation pressure to which a tire may be inflated.
Also called “maximum inflation pressure.”

There are limits to the load any vehicle or any tire can carry. A vehicle
that is overloaded will not handle well and is more difficult to stop.
Overloading can damage important parts of the vehicle. Overloading
can also lead to blowout, sudden loss of pressure or other tire failure
that can cause loss of control.
Your safety and the safety of your passengers depends on making
sure that load limits are not exceeded. Vehicle load includes every-
body and everything in and on the vehicle. These load limits are
technically referred to as the vehicle's Gross Vehicle Weight Rating
(GVWR).
The GVWR includes the weight of the basic vehicle, all factory-
installed and other accessories, a full tank of fuel, oil, coolant and
other fluids plus maximum load. The maximum load includes the
number of passengers that the vehicle is intended to carry (seating
capacity) with an assumed weight of 150 lbs (68 kg) for each passen-
ger at a designated seating position and the total weight of any lug-
gage in the vehicle. If you tow a trailer, the weight of the trailer hitch
and the tongue weight of the loaded trailer must be included as part
of the vehicle weight. At altitudes above 3000 ft (1000 m), combined
towing weight (vehicle plus trailer) must be reduced by 10% for every
3000 ft (1000 m).
The Gross Axle Weight Rating (GAWR) is the maximum load that
can be carried at each of the vehicle's 2 axles (by the front or rear
tires). GVWR and GAWR are listed on the safety compliance label on
the driver door jamb. Because there is an upper limit to your vehicle's
total weight (GVWR), the weight of whatever is being carried (includ-
ing the weight of a trailer hitch and the tongue weight of the loaded
trailer) is also limited. More passengers, or passengers who are heav-
ier than the assumed 150 lbs (68 kg), mean that less weight can be
carried as luggage or other cargo. The tire pressure label on your
Volkswagen also lists the maximum combined weight of all of the oc-
cupants and luggage or other cargo that the vehicle can carry.

When replacing tires or wheel rims on vehicles equipped with
TPMS always read and heed the information and all WARNINGS
regarding tires and wheels ⇒  Tires and wheels.
NOTICE
The wheel electronics are attached to special aluminum valves
on the wheels. These valves are screwed on rigidly. Never bend
the valves “into position” when checking and adjusting tire
pressure.
Missing valve stem caps can cause damage to the valves as
well as to the TPMS sensors. To help prevent damage, always
use valve stem caps like those originally installed at the factory.
The caps must be screwed on tightly. Do not use metal valve
stem caps.
Do not use “comfort valve caps.” They do not seal properly
and can damage the sensors.
When replacing or rotating tires, make certain the valves and
sensors are not damaged.
The aluminum valves that are installed should be replaced
after about 6 years of use because of aging in the rubber seals.
The valves can be replaced when a tire is changed. Do not reuse
aluminum valves after they are removed. They must be replaced.
The tire pressure sensor can be reused.
When replacing the valve cores, use only nickel-plated re-
placement cores.
The batteries in the wheel electronics last up to 10 years. It is
not possible to replace the batteries. The entire device must be
replaced.
Underinflation increases fuel consumption and tire wear.
Dispose of the wheel electronics and the old batteries in an envi-
ronmentally responsible manner. Batteries of the type used in the
wheel electronics may contain Perchlorate Material. Special handling
may apply. See www.dtsc.ca.gov/hadardouswaste/perchlorate. Obey
all applicable legal requirements regarding proper disposal.

If the tire pressure is too low, the relevant tires and the respective
readings are highlighted in yellow.
Each tire, including the spare (if provided), should be checked month-
ly when cold and inflated to the inflation pressure recommended by
the vehicle manufacturer on the vehicle placard or tire inflation pres-
sure label. (If your vehicle has tires of a different size than the size
indicated on the vehicle placard or tire inflation pressure label, you
should determine the proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a
Tire Pressure Monitoring System (TPMS) that illuminates a low tire
pressure telltale when one or more of your tires is significantly under-
inflated. Accordingly, when the low tire pressure telltale illuminates,
you should stop and check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a significantly underinflated
tire causes the tire to overheat and can lead to tire failure. Under-
inflation also reduces fuel efficiency and tire tread life, and may affect
the vehicle's handling and stopping ability.
Please note that the TPMS is not a substitute for proper tire mainte-
nance, and it is the driver's responsibility to maintain correct tire pres-
sure, even if under-inflation has not reached the level to trigger illumi-
nation of the TPMS low tire pressure telltale.
Your vehicle has also been equipped with a TPMS malfunction indi-
cator to indicate when the system is not operating properly. The
TPMS malfunction indicator is combined with the low tire pressure
telltale. When the system detects a malfunction, the telltale will flash
for approximately one minute and then remain continuously illuminat-
ed. This sequence will continue upon subsequent vehicle start-ups as
long as the malfunction exists.
When the malfunction indicator is illuminated, the system may not be
able to detect or signal low tire pressure as intended. TPMS malfunc-
tions may occur for a variety of reasons, including the installation of
replacement or alternate tires or wheels on the vehicle that prevent
the TPMS from functioning properly. Always check the TPMS mal-
function telltale after replacing one or more tires or wheels on your
vehicle to ensure that the replacement or alternate tires and wheels
allow the TPMS to continue to function properly.

Adjust the tire pressure
The proper tire pressure helps reduce rolling resistance as well as
fuel consumption.
When purchasing new tires, always make sure that the tires are opti-
mized for lower rolling resistance.
Use low viscosity engine oil
Fully “synthetic,” low viscosity engine oils that expressly comply with
Volkswagen oil quality standards reduce fuel consumption. Low vis-
cosity engine oils reduce the frictional resistance on the engine and
are distributed more evenly and quickly, particularly when cold-
starting the engine. The effect is particularly apparent in vehicles that
frequently travel short distances.
Always ensure the right engine oil level is maintained and keep to the
scheduled service intervals (engine oil changes).
Make sure the engine oil that you purchase expressly complies with
Volkswagen oil quality standards and is the oil approved by
Volkswagen for your vehicle.
Avoid unnecessary weight
The lighter the vehicle, the more economical and eco-friendly it will
be. For example, an extra 220 lbs (100 kg) of weight increases fuel
consumption by up to 1 pint per 60 miles (0.3 l/100 km).
Remove all unnecessary items and unnecessary dead weight from
the vehicle.
Remove unnecessary aftermarket components
The more aerodynamic the vehicle, the less fuel it will consume. Af-
termarket components such as bicycle racks reduce its aerodynamic
performance.
Therefore, remove unnecessary structures and unused rack systems,
particularly if planning to drive at higher speeds.

Description Possible causes,
among others Possible remedy
Electrical con-
sumers do not
work.
Vehicle battery
charge too low. Charge vehicle battery
Remaining fuel level
too low. Refuel
Fuse blown. Check fuse and replace if
necessary
Fuel consumption
higher than indi-
cated.
– Short hauls.
– “Jumpy” accelera-
tor pedal.
– Avoid short distance
driving.
– Drive defensively.
– Accelerate smoothly.
Electrical loads
switched on.
Switch off unnecessary
loads.
Engine control
malfunction.
Have the malfunction cor-
rected
Tire pressure too
low. Adjust tire pressure
Driving in the
mountains.
No direct corrective action
possible.
Towing a trailer or
driving with a roof
rack.
– Check use.
– Remove if not in use.
Driving with heavy
payload.
No direct corrective action
possible.
Driving at high en-
gine speed. Select a higher gear.

hp Horsepower – unit of measure for engine power
kg Kilogram – metric unit of measure for weight
kN Kilonewton – a unit of measure for force
kPa Kilopascal – unit of measure for tire pressure
kp Kilopond – unit of measure for force
kW Kilowatt – engine rating
LED Light Emitting Diode
m Meter – metric unit of measure for length
MDI Media Device Interface (MEDIA-IN)
MFI Multi-Function Indicator
Nm Newton meter – a unit of measure for engine torque
PDC Park Distance Control
RON Research Octane Number – measurement of anti-
knock resistance of gasoline
rpm Engine revolutions per minute (engine speed)
SAE Society of Automotive Engineers
TSI® Turbocharged gasoline engine with direct fuel injec-
tion
XDL Extension of the Electronic Differential Lock system
5S man 5-speed manual transmission
6S auto 6-speed automatic transmission
6S man 6-speed manual transmission