A WARNING (Continued)
• Although the brake support systems are very effective and can help to control the ve-hicle in difficult driving situations, please al-ways remember that the driving stability of the vehicle depends on the tyre grip.
• When accelerating on a slippery surface, for example on ice and snow, press the accel-erator carefully. The wheels can spin even when brake support systems are active, and this can lead to a loss of control of the vehl-cl e.
A WARNING
ESC will be considerably less effective if oth· er components and systems that affect driv-ing dynamics are not serviced correctly or are not functioning properly. This also ap-plies, but not exclusively, to the brakes, tyres and other systems that have already been named.
Switching the TCS on and off
BSO·OC40
Fig. 224 in the centre console: button for switch-ing the TCS on and off manually.
.-m First read and observe the introductory l-J=J.I information and safety warnings & on page 269.
276 Wh1lo driving
A WARNING (Continued)
• Please always note that modifications and changes to the vehicle can affect the function of the ABS, BAS, EDL, TCS and ESC.
• Alterations to the suspension system or the use of non-approved wheel and tyre com-binations can affect the function of ABS, BAS, TCS, EDL and ESC and reduce their ef· fectiveness.
• Suitable tyres are also crucial if ESC is to function optlmaliy =>page 367.
m The ESC and TCS can only function properly L.:U if ail 4 wheels are fitted with the same tyres. Any differences in the roiling radius of the tyres can cause the system to reduce engine power unex-pectedly.
m If there is a fault in the ABS, the ESC, TCS lU and EDL will also stop working.
m Operating noises may be heard during the L.:U self-regulation processes of the systems ex-plained above.
When the engine is running, the TCS can be switched off by pressing the@ 224 button. The TCS should only be switched off in certain sit-uations when the traction achieved is not sufficient. For example:
• When driving in deep snow or on loose surfa-ces.
• When rocking the vehicle backwards and for-wards to free it from mud.
Then press the@ 224 button to switch the TCS back on.
Brake fluid
B7E.02AO
Fig. 225 In the engine compartment: cap on the brake fluid container.
r-111 First read and observe the Introductory l-Jr:,U Information and safety warnings&. on page 269.
Brake fluid will gradually absorb water from the surrounding air. The brake system will be damaged if there is too much water in the brake fluid. The boiling point of the brake fluid is also considerably reduced by the water content. Heavy use of the brakes may cause a vapour lock in the brake sys-tem if the water content is too high. Vapour locks reduce levels of braking power, considerably in-crease braking distance and can even cause the brake system to fail completely. Your own safety and that of other road users depends on having a brake system that functions properly at all times
Brake fluid specification
Volkswagen has developed a brake fluid that has been optimised for the brake system in the vehicle. To ensure optimal operation of the brake system, Volkswagen Commercial Vehicles recommends the use of brake fluid compliant with VW stand-ard 501 14.
Before using a particular brake fluid, check that the specifications printed on the container correspond to the vehicle requirements.
Brake fluid that is compliant with VW stand-ard 501 14 is available from Volkswagen Commer-cial Vehicles dealerships.
If this brake fluid is not available and it is necessa-ry to use another high-quality brake fluid instead, brake fluid that is compliant with DIN ISO 4925 CLASS 4 or US standard FMVSS 116 DOT 4 can be used.
Not all brake fluids that are compliant with DIN ISO 4925 CLASS 4 or US standard FMVSS 116 DOT 4 have the same chemical com-position. Some of these brake fluids may contain chemicals that can damage or destroy brake sys-tem components over time.
To ensure sustained optimal operation of the brake system, Volkswagen Commercial Vehicles there-fore recommends the use of brake fluid that is compliant with VW standard 501 14.
Brake fluid that is compliant with VW stand-ard 501 14 fulfils the requirements of DIN ISO 4925 CLASS 4 or US standard FMVSS 116 DOT 4.
Brake fluid level
The brake fluid level must always be between the MIN and MAX marking of the brake fluid container or above the MIN marking &.
The brake fluid level cannot be checked accurately in all models as engine components may partially conceal the brake fluid container. If the brake fluid level cannot be read exactly, please go to a quali-fied workshop.
The brake fluid level drops slightly when the vehi-cle is being used as the brake pads wear and the brakes are automatically adjusted.
Changing the brake fluid
The brake fluid must be changed as indicated in the service schedule Service schedule. The brake fluid should be changed by a qualified workshop. Volkswagen Commercial Vehicles rec-ommends using a Volkswagen Commercial Vehi-cles dealership for this purpose. Only brake fluid that confonns with the required specification should be used.
A WARNING
Brake failure or reduced braking effect can be caused by the brake fluid level being too low or by brake fluid that Is too old or unsuitable.
• The brake system and brake fluid level must be checked regularly.
• The brake fluid should be changed regu-larly, according to the service schedule Service schedule.
• Heavy use of the brakes may cause a va-pour lock If the brake fluid Is left In the sys-tem for too long. Vapour locks reduce levels
Starting the engine, changing gear and parking I 277
Saving fuel
1/100 km
-10°C
+20 oc
L----------------tkm 5 15 25 30
en-o11S
Fig. 226 Fuel consumption in litres per 100 km at two different outside temperatures.
r-1"'11 First read and observe the Introductory Information and safety warnings&. on page 278.
By adopting an economical driving style and antici-pating the traffic situation ahead, you can easily re-duce fuel consumption by 10-15%.
Cars use most fuel when accelerating. If you think ahead when driving, you will need to brake less and thus accelerate less. Wherever possible, let the car roll slowly to a stop, for instance when you can see that the next traffic lights are red.
Avoid short journeys
Directly after a cold start, the engine has a very high fuel consumption. The engine reaches its working temperature after a few kilometres, when fuel consumption will return to a normal level.
The engine and catalytic converter need to reach their proper working temperature in order to mini-mise fuel consumption and emissions. The out-side temperature is a key factor.
The different rates of fuel consumption for the same distance at both +20"C (+68"F) and at -10"C (+14"F) are shown in Fig. 226.
Therefore, avoid making too many short journeys and car share whenever possible.
Under the same conditions, the vehicle will use more fuel in winter than in summer.
280 I While dnvmg
Not only is it illegal in some countries to "warm up" the cold engine by running it while the vehicle is stationary, it is also technically unnecessary and a waste of fuel.
Adjust the tyre pressure
The correct tyre pressure reduces rolling resist-ance and therefore also fuel consumption.
Ensure that any new tyres purchased have opti-mum rolling resistance.
Use low viscosity engine oils
Fully synthetic low viscosity engine oils reduce fuel consumption. Low viscosity engine oils decrease frictional resistance in the engine and spread bet-ter and more quickly, especially for cold starts. They are especially effective In vehicles that make alotofshortjourneys.
Always ensure that the engine oil level is correct and that you keep to the service intervals (oil change intervals).
When buying engine oil, always make sure it com-plies with engine oil norms and has been approved by Volkswagen Commercial Vehicles.
Avoid unnecessary loads
Lighter vehicles are more economical and have lower environmental impact. An extra 100 kg, for example, can increase fuel consumption by up to 0.311100 km.
Remove all unnecessary objects and loads from the vehicle.
Remove any unnecessary special equipment and accessories
The more aerodynamic a vehicle, the lower its fuel consumption. Special equipment and accessories, such as roof carriers or bicycle carriers, make the vehicle less aerodynamic.
You should therefore remove any special equip-ment and luggage carriers that are not in use, es-pecially if you are going to be driving at high speeds.
A WARNING (Continued)
• Front Assist can Issue unnecessary warn-ings and carry out unwanted braking inter-ventions when Its function is Impaired, e.g. if the position of the radar sensor has been soiled or changed.
• The Front Assist does not react to per-sons, animals or vehicles crossing or ap-proaching In the same lane.
• The driver must be prepared to take full control of the vehicle at all times.
m The brake pedal feels "harder" when Front W Assist triggers the brakes.
Displays
A
m Automatic brake intervention by Front Assist W can be stopped by using the accelerator or through steering intervention.
m Deactivate Front Assist if it does not function W as described in this chapter, e.g. if multiple unwanted interventions occur, deactivate Front As-sist and have the system checked by a qualified workshop as soon as possible. Volkswagen recom-mends using a Volkswagen dealership for this pur-pose. <1
BSG 0075
Fig. 244 In the instrument cluster display: Assist deactivated . ..!!. Distance warning lamp.
Fig. 245 The display in the instrument cluster: ad-vance warning display.
,....--m First read and observe the Introductory l.-.J,:.,U information and safety warnings & on page 307.
308 I While dnving
Distance warning
If the safe distance to the vehicle in front drops be-low the minimum level, a distance warning will ap-pear in the instrument cluster display ::.Fig. 244 !ID.
Increase the distance.
Advance warning
The system detects a potential collision with a ve-hicle in front ::.Fig. 245.
Brake or take avoiding action!
A WARNING
Failure to observe illuminated warning lamps and displays can cause accidents and seri-ous Injuries.
• Never ignore Illuminated warning lamps
La_n_d __
Operation
Fig. 248 Display in the exterior mirror
r-f"n First read and observe the introductory L-W! information and safety warnings & on page 312.
Visual display in the exterior Situation mirror housing
The lane change assist system uses radar sensors to monitor the area behind the vehicle. The system then measures the distance and the difference in speed to other vehicles. The lane change assist system is activated at speeds over approximately 10 km/h (6 m ph) and deactivated at speeds under 5 km/h (3 mph). The driver receives infonmation via the visual display in the exterior mirror housing.
Visual display in the exterior mirror housing
The visual displays 248 in the exterior mirror housing notify the driver of following traffic on ei-ther side of the vehicle whenever a traffic situation is classified as critical when the driver intends to change lanes.
Tinted side windows or retrofitted tinting foils can negatively affect or distort the visual displays in the exterior mirror.
None No other vehicle at a critical distance from your vehicle detected by -the lane change assist system & in Indicator lamp on page 313.
Lights up once briefly. The lane change assist system is switched on and ready for use.
Lit up (information level). The lane change assist system has detected a potentially critical sit-uation.
Flashes several times The turn signal is active and the lane change assist system has de-
(warning level). tected a potentially critical situation on the corresponding side of the in Indicator/amp on page 313.
Radar sensors
The radar sensors are on the left and right behind the rear bumper and are not visible from outside. They monitor an area of approximately 70 metres behind the vehicle and the blind spots to the right and left of the vehicle. The monitored area to the side of the vehicle is approximately one lane wide.
The width of the lane is not detected in individual cases. but is predefined in the system. For this rea-son. incorrect displays could be shown when driv-
314 I While driving
ing in narrow lanes or when driving in the middle of 2 lanes. In the same way, vehicles travelling in the lane next to the one you wish to change to could be detected, as could solid objects such as safety barriers. and trigger an incorrect warning.
The correct engine oil is important for the function and service life of the engine. A special high quali-ty multigrade oil has been filled at the factory and this can normally be used as an all-season oil.
If possible, only use Volkswagen-approved engine oil =>CD. To comply with the requirements of the flexible service, only use approved flexible service engine oil that complies with the corresponding VW standard =>table on page 355. The engine oils listed are multigrade high-lubricity oils.
Engine oils are constantly being developed and im-proved. Volkswagen Commercial Vehicles dealers are kept up to date with regard to any changes. Volkswagen Commercial Vehicles therefore recom-mends having engine oil changes done by a Volks-wagen Commercial Vehicles dealer.
The quality of the engine oil is not only tailored to the requirements of engines and exhaust gas treat-ment systems, but also to fuel quality. Due to the
way in which a combustion engine works, engine oil always comes into contact with combustion resi-dues and fuel, which has a knock-on effect on the ageing process of the oil.
The quality of fuels can vary greatly between indi-vidual markets and this must be taken into account when selecting the correct engine oil.
The use of engine oils compliant with the VW 504 00 und VW 507 00 specifications requires a fuel quality compliant with EN 228 (petrol) and EN 590 (diesel), or fuel of an equivalent quality. Engine oils compliant with VW 504 00 und VW 507 00 are therefore unsuitable for use in a large number of markets.
Permitted engine oil specifications =>CD
Engine type Flexible service QIS, QIS Fixed service Ql1, Ql2, Q13, Ql4, Ql5
110 kW petrol engine VW504 00
150 kW petrol engine -
All diesel engines with DPF VW507 00
All diesel engines without DPF VW507 00
CD
• Do not add any additional lubricants to the engine oil. Any damage caused by the use of such additives is not covered by the warranty.
• Only engine oil specifications that have been approved for use with the engine should be used. Using other engine oils can cause en-gine damage.
• Another engine oil can be used in the event of an emergency if the listed engine oils (=>table on page 355) are not available. To
vw 502 00
VW502 00
VW507 00
VW505 01
CD
avoid damaging the engine, a maximum quanti-ty of 0.5 litres of the following engine oil may be used only once until the next oil change:
-Petrol engines: standards ACEAA3/B4 or API SN (API SM).
-Diesel engines: standards ACEA C3 or APICJ4.
In the engine compartment 1355
A WARNING (Continued)
• If engine oil is spilt on cold engine parts it can heat up and Ignite when the engine Is running.
• Always ensure that the engine oil filler cap Is securely tightened after refilling, and that the dipstick Is properly Inserted back Into the guide tube. This will prevent the engine oil from draining out on to hot engine compo-nents when the engine Is running.
CD
• Do not start the engine if the engine oil level Is above area@. Seek expert assistance. The catalytic converter and the engine could other-wise be damaged.
• When refilling or changing service fluids, please ensure that the correct fluids are added through the correct openings. Incorrect service fluids can cause serious functional problems and engine damage.
Engine oil consumption
n"'n First read and observe the introductory l.-J,:.ll information and safety warnings & on page 353.
Engine oil consumption can vary from engine to engine and can change during the working life of an engine.
The vehicle may consume up to 1.0 litre of engine oil per 2,000 km, depending on how you drive and the conditions in which the car is used. In new ve-
Changing engine oil
n"'n First read and observe the Introductory l.-J,:.ll Information and safety warnings & on page 353.
The engine oil must be changed regularly in ac-cordance with the data given in the service sched-ule.
The engine oil and filter change should be carried out by a qualified workshop due to the special tools and knowledge required, this also applies to the disposal of used oil. Volkswagen Commercial Vehi-cles recommends using a Volkswagen Commercial Vehicles dealership for this purpose.
The engine oil level must never be above I!!S area @. Otherwise oil can be drawn in through the crankcase breather and escape into the atmosphere via the exhaust system. <1
hicles. consumption is likely to be higher for the first 5,000 km. The engine oil level must therefore be checked at regular intervals, preferably when refuelling and before long journeys.
When the engine is working hard the oil level must be kept within area =>Fig. 274 @,for instance dur-ing long motorway cruising in summer, trailer tow-ing or climbing mountain passes. <1
More details on the service intervals can be found in the service schedule.
Additives in the engine oil can cause new engine oil to discolour quickly. This is normal and does not mean that the engine oil should be changed more frequently.
A WARNING
If, In exceptional cases, you have to carry out an oil change yourself, please note the fol-lowing:
• Always wear eye protection. .,.
In the engine compartment 357
Coolant specification
r-l"'n First read and observe the Introductory l..-J,::,U Information and safety warnings & on page 358.
The cooling system is filled at the factory with a mixture of specially prepared water and at least 40% coolant additive G 13 (fl-VW 774 J). The coolant additive is dyed purple. This mixture of wa-ter and coolant additive gives the necessary frost protection down to -2s•c (-13.F) and protects the alloy parts of the cooling system against corrosion. The mixture also prevents scaling and raises the boiling point of the coolant.
In order to protect the coolant system, the propor-tion of coolant additive must always be at least 40%, even if anti-freeze is not required in warm weather and warm climates.
If greater frost protection is required in very cold climates, the proportion of anti-freeze additive can be increased. However, the percentage of coolant additive should not exceed 60%, as this would re-duce the frost protection and the cooling effect.
When refilling the coolant, a mixture of distilled water and at least 40% coolant additive G 13 or G 12 plus-plus (TL-VW 774 G) (both of which are dyed purple) must be used in order to obtain the optimum corrosion protection =>(]). Mixing G 13 with the coolant additives G 12 plus (Tl-VW774 F), G 12 (dyed red) orG 11 (dyed blue-green) will significantly decrease the level of corro-sion protection and should therefore be avoided =>
Insufficient anti-freeze In the coolant system can cause the engine to break down and cause serious Injuries.
• Please note that the amount of correct coolant additive used must be sufficient for the lowest ambient temperature that you ex-pect the vehicle to be exposed to.
• Coolant can freeze at extremely cold out-side temperatures, causing the vehicle to break down. Vehicle occupants with Inade-quate winter clothing could then freeze to death as the heating will also no longer func-tion.
360 I Cleaning and maintenance
CD
Never mix genuine coolant additives with other coolants that have not been approved by Volks-wagen. Mixing other coolants could cause seri-ous damage to the engine and cooling system.
• If the liquid in the coolant expansion tank is brown instead of purple, for example, G 13 has been mixed with another unsuitable engine coolant. The coolant must be changed as soon as possible if this Is the case. Failure to ob-serve this point can result In serious faults or engine damage.
Coolant and coolant additives can pollute the "7!1:5 environment. Spilt service fluids must be col-lected then disposed of properly and in an environ-mentally responsible way.