A WARNING
The intelligent tyre monitoring system tech-nology cannot overcome the laws of physics, and functions only within the limits of the system. Incorrect handling of the wheels and tyres can lead to a sudden loss of pressure in the tyres, tread separation and even tyre blow-out.
• Check tyre pressures regularly and always maintain the specified tyre pressure value =>page 367. If the tyre pressure is too low, it is possible that the tyre temperature will in· crease to such an extent that the tread peels off and the tyre bursts.
• Always maintain correct cold tyre pres-sure as listed on the tyre pressure label =>page 367.
• Check tyre Inflation pressure regularly when the tyres are cold. Adjust tyre pressure in the cold tyre to the recommended tyre pressure for the tyres Installed on your vehi· cle as necessary.
• Check your tyres regularly for signs of wear or damage.
• Never exceed the top speed and load per-mitted for the fitted tyres.
CD
If valve caps are missing, the valve could be damaged. Always use valve caps that comply with the factory-fitted valve cap specifications. Always screw on valve caps fully. Do not use metal valve caps.
Indicator lamp
Under-inflated tyres will increase fuel con-W sumption and tyre wear. A higher tyre pres-sure generally reduces the fuel consumption. How-ever, the maximum tyre pressures specified by the manufacturer must always be adhered to.
m When new tyres are driven at high speeds for L!..J the first time, they can expand slightly and trigger a one-off pressure warning.
m Old tyres should only be replaced by tyres L!..J that have been approved by Volkswagen Commercial Vehicles for the vehicle type.
m Do not rely solely on the tyre monitoring sys-L!..J tern. Check your tyres regularly to ensure that they are properly inflated and have no signs of damage, such as punctures, cuts, cracks, and blis-ters. Remove any objects that become embedded in the tyre tread but have not penetrated into the body of the tyre itself.
m The tyre monitoring system is adjusted for L!..J the factory-recommended tyre pressures to be found on the tyre pressure label.
Lit upa) Possible cause=>& Solution
Do not drive on! Reduce speed immedi· ately. Stop the vehicle as soon as possible
The tyre pressure of one tyre or several and when safe to do so. Do not undertake
tyres has decreased considerably in com-any extreme steering or braking manoeuvres!
(l) parison to the tyre pressure set by the Check all wheels and tyre pressures, and cor-rect if necessary =>page 367. The damaged driver, or the structure of the tyre is dam-tyre should be replaced. The tyre monitoring aged. system will have to be re-synchronised after changing the tyre pressure, or after changing one or more wheels =>page 321.
a) An acoustic warning will also be sounded, and a corresponding message may appear 1n the instrument cluster display.
Driver assist systems I 319
A wARNING
New tyres will have to be run in as they will Initially have reduced grip and braking effect.
• Drive particularly carefully for the first 600 km in order to prevent accidents and se-rious injury.
A WARNING
Wheels must have the necessary freedom of operation. If the wheels do not have the nec-essary freedom of operation, the tyre could rub on parts of the running gear, the vehicle body and the brake lines. This can lead to a fault in the brake system and to tread separa-tion and thus to a tyre bursting.
Tyre pressure
r-T'n First read and observe the introductory L-k.U Information and safety warnings & on page 367.
The correct tyre pressure for factory-fitted tyres is shown on the tyre pressure label and applies to all-season, summer and winter tyres. The tyre pres-sure label is located on the lock column on the left front door.
If the tyre pressure is too low or too high, the tyres will wear prematurely and the vehicle will not han-dle well => &. The correct tyre pressure is particu-larly important at high speeds. Incorrect tyre pres-sure causes premature wear and can cause a tyre burst.
The pressure should therefore be checked at least once a month and before starting a journey.
The given tyre pressure applies to cold tyres. Tyre pressure is always higher in warm tyres than it is in cold tyres.
For this reason, never reduce the pressure in warm tyres to adjust the tyre pressure. This would result in low tyre pressures that could potentially cause the tyre to burst suddenly.
Checking tyre pressure
Always check the tyre inflation pressure on "cold" tyres. A "cold" tyre can be defined as one on a ve-hicle that has only been driven a few kilometres (miles) within 3 hours prior to the test and at low speeds.
A WARNING (Continued)
• The actual tyre size must not exceed the tyre dimensions of manufacturers approved by Volkswagen Commercial Vehicles and must not rub on any vehicle body parts.
m Despite identical size details, the actual size L!..J of the various tyre makes may vary from these specified dimensions, or the tyre contours may vary considerably.
m Volkswagen Commercial Vehicles-approved L!..J tyres are guaranteed to have the dimensions that are suitable for the vehicle. The salesperson will have to provide a certificate from the tyre man-ufacturer for other tyre makes to prove that the tyre is also suitable for the vehicle. This certificate must be stored in a safe place in the vehicle.
• The tyre pressures must be adjusted to suit a heavy vehicle load.
• After altering the tyre pressures, please ensure that the valve caps are screwed on and observe any information and instructions on setting the tyre monitoring system =>page 318.
The temporary spare wheel is filled to the highest tyre pressure permissible for the vehicle.
A WARNING
Too high or too low a pressure may cause the tyre to suddenly lose pressure or burst while the vehicle is in motion. This can cause seri-ous accidents and fatal Injuries.
• If the tyre pressure Is too low, it is possi-ble that the tyre temperature will increase to such an extent when driving that the tread peels off and the tyre bursts.
• Fast speeds or overloading of the vehicle can cause overheating, sudden tyre damage including tyre bursts and ripping of the tread surface and thus to a loss of control of the vehicle.
• If the tyre pressure is too low or too high, the tyres will wear prematurely and the vehi-cle will not handle well. .,.
Wheels and tyres 371
=>Fig. 284 Tyre lettering (example) I Meaning
JHCO CHWS 2213 Tyre identification number (TINa)-may only be on the inner side of the wheel) and date of manufacture:
® JHCO Identifier of producing plant and specifications of CHWS the tyre manufacturer on size and characteristics
2213 Manufacture date: 22nd week in 2013.
Information for the end user concernmg comparat1ve values for spec1fied bas1c tyres (standardised test procedure) =>page 404·
TREADWEAR 280 Relative life expectancy for the tyre, with reference to a US-specific standard test. Tyres with the specification 280 are used up at a rate of 2.8 times more slowly than standard tyres
@ which have a treadwear value of 100. The performance of tyres is determined by how they are used and can notably de-viate from norm values due to driving style, maintenance, road surface and climatic conditions.
TRACTION AA Wet braking response of the tyre (AA, A, B or C). This is tes-led under controlled conditions on certified testing routes.
® Tyres marked C have a low traction performance. The traction value assigned to the tyres are based on linear traction tests and do not include speed, lateral stability, or aquaplaning and traction under high load.
TEMPERATURE A Temperature stability of the tyre at higher test speeds (A, B or C). A and B tyres exceed legal requirements. The tempera-tu re evaluation is based on tyres with correct pressure and
® does not allow for excess pressure. Excessive speed, incor-reel pressure or excess pressure can cause heat build-up or tyre damage. This applies to one or a combination of these factors.
0 88 H Load capacity index ::.page 377 and speed index ::.page 377.
® Rotation and arrow Denotes direction of rotation ::.page 377.
OR: outside Denotes outside of tyres ::.page 377.
® MAX INFLATION 350 KPA US limitation for the maximum air pressure. (51 psi /3.51 bar)
® M+S or M/S or & Denotes winter tyres (mud and snow tyres) ::.page 378. Studded snow tyres are labelled with an E after the S.
® TWI Indicates the position of the tread wear indicator ::.page 372.
@ Brand name. logo Manufacturer.
@ Made in Germany Country of manufacture.
@> @ Country-specific denotation for China (China Compulsory Certification).
® :r 023 Country-specific denotation for Brazil.
E4 e4 0200477-b Certification of conformity with international regulations. The next number is the code number of the country that granted
® approval. Approved tyres which comply with ECE regulations are denoted with E. tyres which comply with EC regulations are denoted with e. This is followed by the number of the type approval certificate.
@ RADIAL TUBELESS Tubeless radial tyres.
376 I Cleaning and maintenance
A WARNING (Continued)
• Always follow the instructions In the checklist and observe the general safety pro-
Sealing and inflating tyres
r-"'('n First read and observe the Introductory L-J,.:.U Information and safety warnings & on page 425.
Sealing a tyre
• Unscrew the cap from the tyre valve.
• Use the valve core extractor 302 CD to screw the valve core out of the tyre valve. Place the core on a clean surface.
• Shake the tyre filler bottle 302 ® vigo-rously up and down several times.
• Screw the filler hose 302 @tightly onto the tyre filler bottle in a clockwise direction. The plastic foil on the plug is pierced automatically.
• Remove the plug from the filler hose 302@ and place the open end fully on the tyre valve.
• Hold the bottle upside down and inject the en-tire contents of the tyre filler bottle into the tyre.
• Remove the empty tyre filler bottle from the valve.
• Use the valve core extractor 302 CD to screw the valve core back onto the tyre valve.
Inflating the tyre
• Screw the tyre filler hose 302 ® of the air compressor tightly onto the tyre valve.
• Check that the bleed screw 302 (?) is closed.
• Start the engine and let it run.
• Insert the plug 302 ®into one of the ve-hicle's 12-volt sockets 163.
• Use the on/off switch 302 ®to switch on the air compressor.
• Run the compressor until the tyre pressure has reached 2.0-2.5 bar (29-36 psi I 200-250 kPa) maximum running time is 6 minutes
• Switch off the air compressor.
• If a pressure level of 2.0-2.5 bar (29-36 psi I 200 -250 kPa) cannot be achieved unscrew the tyre filler hose from the tyre valve.
428 I If and when
• Drive (or reverse) the vehicle approximately 1 0 metres so that the sealing compound is more evenly distributed in the tyre.
• Screw the tyre filler hose for the air compressor firmly back onto the tyre valve and inflate the tyre again.
• If the required pressure still cannot be reached, the tyre is too badly damaged. The tyre cannot be sealed with the breakdown set. Do not drive on. Seek expert assistance &.
• Disconnect the air compressor and unscrew the tyre filler hose from the tyre valve.
• Drive the vehicle no faster than 80 km/h (50 mph) once a tyre pressure of 2.0-2.5 bar (29-36 psi I 200-250 kPa) has been reached.
• Check the tyre pressure after driving for 10 mi-nutes 429.
A WARNING
The tyre filler hose and the air compressor can get hot during Inflation.
• Protect your hands and skin from the hot components.
• Do not place the hot tyre filler hose or the hot air compressor on any Inflammable mate-rials.
• Allow the device to cool down fully before stowing.
• If the tyre will not Inflate to at least 2.0 bar (29 psi/ 200 kPa), the tyre Is too damaged. The sealant Is unable to seal the tyre. Do not drive on. Seek expert assistance.
CD
Switch the air compressor off after a maximum of 6 minutes to avoid overheating. Let the air compressor cool down for a few minutes be-fore switching it back on.