2015 VOLKSWAGEN TRANSPORTER sensor

m When Front Assist is switched on, the display L!J in the instrument cluster can be overwritten by displays related to other functions, e.g. an in-coming telephone call. Radar sensor
Fig. 246 In the bumper under the Volkswagen badge: radar sensor® and area around the radar sensor to be kept clear@.
r-f"'n First read and observe the Introductory l.-lo:-1.1 Information and safety warnings & on page 307.
A radar sensor is fitted to the front bumper to moni-tor the traffic situation =>Fig. 246 @.Vehicles trav-elling ahead can thus be detected up to a distance of approximately 120 m.
The efficacy of the radar sensor can be impaired by contamination such as slush or snow, or by en-vironmental conditions such as heavy rain or spray. In this case the area monitoring system (Front As-sist) will not work. The instrument cluster display shows the message Front Assist: no sensor view!. Clean the radar sensors as required => Front Assist will automatically be available again as soon as the radar sensor is no longer impaired.
Strong reflected radiation of the radar signal, e.g. in multi-storey car parks, can impair the function of Front Assist.
Front scan system (Front Assist)
r-f"'n First read and observe the introductory l.-lo:-1.1 information and safety warnings & on page 307.
The area in front of and around the radar sensor @ must not be covered by objects such as stick-ers, auxiliary headlights, face plates for number plates or the like, as this can impair the function of the Front Assist.
Any structural modifications to the vehicle, e.g. lowering the vehicle or making alterations to the front end trim, can impair the function of Front As-sist. Structural modifications should therefore al-ways be carried out by a qualified workshop. Volkswagen recommends using a Volkswagen dealership for this purpose.
Incorrectly performed repairs to the front end of the vehicle can alter the position of the radar sensor and therefore impair the function of Front Assist. Repair work should therefore only be carried out by a qualified workshop. Volkswagen recommends using a Volkswagen dealership for this purpose.
Switch off Front Assist if you suspect that the radar sensor has been damaged or its position has been altered. This can help to prevent sec-ondary damage. Have the radar sensor real-Igned.
• The radar sensor could be moved if it is hit, for example In parking manoeuvres. Readjust-Ing the sensor could impair the performance of the system or cause it to be switched off.
• Repair work on the radar sensor will require special knowledge and tools. Volkswagen rec-ommends using a Volkswagen dealership for this purpose.
• Remove snow with a brush, and remove Ice preferably with a solvent-free de-leer spray. The front scan system (Front Assist) is activated automatically when the ignition is switched on.
The system also retains the programmed setting when the ignition is next switched on. 1>
Driver assist systems 309

Volkswagen recommends that Front Assist is switched on at all times. Exceptions =>page 310, Temporarily switch off the front scan system (Front Assist) in the following situations.
Activating and deactivating the front scan system
The front scan system can be activated and deacti-vated using the Front Assist option in the As-sistant submenu of the Settings menu. A tick indicates that a driver assist system is switched on.
The advance warning and distance warning are deactivated as well when the front scan system is deactivated.
If the front scan system is deactivated, a confirma-tory symbol is shown in the instrument cluster dis-play =>page 308
Activating and deactivating the advanced warning
The advance warning can be activated and deacti-vated using the Front Assist option in the As-sistant submenu of the Settings menu.
Activating or deactivating the distance warning
Depending on the vehicle equipment, the distance warning can be activated and deactivated using the Front Assist option in the Assistant sub-menu of the Settings menu.
Volkswagen recommends that the distance warn-ing is switched on at all times. Temporarily switch off the front scan system (Front Assist) in the
following situations
r-T'n First read and observe the introductory l-J,::JJ information and safety warnings & on page 307.
The area monitoring system (Front Assist) should be switched off in the following situations due to system limitations => &:
• If the vehicle is being towed.
• If the vehicle is on a rolling road test bed.
• If the vehide is utilised in a capacity beyond us-age on public roads, e.g. off-road or racing.
• If the radar sensor is faulty.
310 I While drivtng
• On external force on the radar sensor, e.g. after a rear-end collision.
• In the event of multiple unwanted interventions.
• If the radar sensor is covered temporarily by any auxiliary equipment, e.g. auxiliary headlights.
• If the vehicle is being loaded onto a truck, car ferry or motorail train.
A WARNING
Failure to switch off Front Assist in the situa-tions mentioned can cause accidents and se-rious Injuries.

City Emergency Brake function
Fig. 247 The display in the instrument cluster: ad-vance warning display.
,...-m First read and observe the introductory information and safety warnings & on page 307.
The City Emergency Brake function is part of the area monitoring system (Front Assist) and is active when Front Assist is switched on.
The front scan system and thus the City Emergen-cy Brake function can be activated and deactivated using the Assistant menu in the Volkswagen in-formation system or the Front Assist option in the Assistant submenu of the Settings menu 24.
The City Emergency Brake function gathers infor-mation on the traffic situation up to a distance of about 10 m in front of the vehicle within a speed range of about 5 km/h (3 m ph) to 30 kmlh (19 mph).
The system prepares the vehicle for emergency braking if it detects a possible collision with a vehi-cle ahead &.
If the driver does not react to a possible serious collision, the system can automatically stop the ve-hicle with brake pressure with increasing intensity so as to reduce the speed in a possible collision. Hence the system can help minimise the conse-quences of an accident.
Display
Automatic deceleration by the City Emergency Brake function will be shown by the advance warn-ing display in the instrument Fig. 247.
A wARNING
The intelligent technology used in the City Emergency Brake cannot overcome the laws of physics, and functions only within the lim-its of the system. The driver is always re-sponsible for braking In time.
• Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road and traffic conditions.
• The City Emergency Brake function can-not prevent accidents and serious injuries by itself.
• The City Emergency Brake function can carry out unwanted brake interventions in certain complex driving situations, e.g. at building sites and metal tracks.
• The City Emergency Brake can carry out unwanted braking interventions when its function is impaired, e.g. if the position of the radar sensor has been contaminated or changed.
• The City Emergency Brake function does not react to persons, animals or vehicles crossing or approaching in the same lane.
m The brake pedal feels "harder" when the City l!J Emergency Brake function triggers the brakes.
m Automatic brake intervention by the City l!J Emergency Brake function can be stopped by using the accelerator or through steering interven-tion.
m The City Emergency Brake function can L!J brake the vehicle to a standstill. The vehicle will not be held for any extended period by the braking system. Depress the brake.
m Switch off Front Assist and the City Emergen-L!J cy Brake function in the event of multiple un-wanted interventions. Go to a qualified workshop. Volkswagen recommends using a Volkswagen dealership for this purpose.
m Multiple interventions can lead to automatic l!J deactivation of the City Emergency Brake function. Driver assist systems 311

System limits
r-('n First read and observe the Introductory L-J,:.U Information and safety warnings & on page 307.
The area monitoring system (Front Assist) has physical and system-related limits. The driver may therefore feel that, in certain circumstances, some Front Assist reactions occur unexpectedly or with a delay. You should therefore always be prepared to take full control of the vehicle if necessary.
The following conditions can prevent Front Assist from reacting, or cause a delay in its reaction:
• In tight bends.
• If the accelerator is fully depressed.
• If Front Assist is switched off or there is a fault.
• If TCS or ESC is switched off manually.
• If the ESC is taking corrective action.
• If there is a fault in several brake lights on the vehicle or on a trailer with an electrical connection to the vehicle.
• If the radar sensor is dirty or covered.
• If the vehicle is reversing.
• Under hard acceleration.
• In snow or heavy rain.
• In case of narrow vehicles, e.g. motorbikes.
• If vehicles are travelling slightly to the left or right of your vehicle.
• If vehicles are crossing in front of your vehicle.
• If there is oncoming traffic.
• In uncertain traffic situations.
• 1/Vhen loads or attachment parts on other vehi-cles protrude to the side, rear or above the normal dimensions of the vehicle. Lane change assist system (Side Assist)
COJ Introduction
This chapter contains information on the following subjects:
Indicator lamp ... .
Operation ....... .
Driving situations ..........•.............
313
314
315
The lane change assist system (Side As-
sist) provides assistance when checking
for traffic behind the vehicle.
The lane change assist system cannot be switched on if the factory-fitted towing bracket is electrically connected to the trailer. The lane change assist system must be switched off manually for non-fac-tory-fitted towing brackets.
The lane change assist system has been designed for use on surfaced roads only.
Additional information and warnings:
• Exterior views =<>page 5
• Volkswagen information system =<>page 24
• Accessories, modifications, repairs and renewal of parts =<>page 394.
3121 While drivmg
A WARNING
The Intelligent technology of the lane change assist system (Side Assist) cannot change the laws of physics or the system-related ve-hicle limitations. Always take care when us-Ing the lane change assist system as you could otherwise cause accidents or Injuries. The system Is not a substitute for the full concentration of the driver.
• Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road and traffic conditions.
• Your hands should always be on the steer-Ing wheel so that you can steer at any time.
• Pay attention to the visual displays in the exterior mirror housing and in the Instrument cluster display, and respond to the com-mands.
• The lane change assist system may react to special roadside structures, e.g. high or offset crash barriers. This can lead to error warnings. ,..

A WARNING (Continued)
• Never use the lane change assist system on unsurfaced roads. The lane change assist system has been designed exclusively for use on surfaced roads.
• Always pay close attention to what Is hap-pening around the vehicle.
• Never use the lane change assist system, If the radar sensors are dirty, covered or dam-aged. These circumstances can Impair the proper functioning of the system.
• lt may be hard to see the display In the ex-terior mirror In direct sunlight.
• The sensors In the rear bumper can be shif-ted or damaged through Impacts, e.g. when parking. As a result the system may switch it-self off or at least be impaired.
Indicator lamp
.---T'n First read and observe the introductory L-J,:..IJ Information and safety warnings & on page 312.
Lights up or Possible cause flashes
The lane change assist system is cur-rently not available.
Several warning and indicator lamps will light up briefly as a functional check when the ignition is switched on. They will go out after a few seconds.
• The system sensors In the bumper must be kept clean and free of ice and snow and not be covered up otherwise the system will not work properly.
m Only Volkswagen-approved vehicle paints L!..J may be used on the rear bumper. Other vehi-cle paints could limit or even distort the function of the lane change assist system.
m If the lane change assist system does not L!..J function as described in this chapter, or after a collision with another vehicle, do not use the sys-tem. Go to a qualified workshop.
m Go to a qualified workshop and have the sys-L!..J tern checked ifthere is a fault in the system or after an accident. A WARNING
Failure to observe illuminated warning lamps and text messages can lead to your vehicle breaking down in traffic, and can cause acci-dent and serious Injury.
• Never ignore any illuminated warning lamps or text messages.
• Stop the vehicle as soon as possible and when safe to do so.
Failure to observe illuminated Indicator lamps and text messages can lead to your vehicle be-Ing damaged. Driver assist systems 313

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.

Function and control
Fig. 253 In the stowage compartment on the front passenger side: button for the tyre monitoring sys-tem.
l"'"""f'n First read and observe the Introductory l.-J,.:,LL Information and safety warnings & on page 318.
The tyre monitoring system uses data from the ASS sensors and other functions to check the speed of rotation and the rolling circumference of the individual wheels. The rolling circumference of the wheels changes, if the tyre pressure is too low. This is then shown by the tyre monitoring sys-tem ill in the instrument cluster.
The operation of the tyre monitoring system is im-paired:
• If the tyre pressure has been changed manual-ly.
• If the tyre has structural damage.
• If the vehicle Is loaded more heavily on one side.
• If the wheels on one axle are loaded more heavily, e.g. high load level.
• If snow chains have been fitted.
• If one wheel per axle has been changed.
• When driving with a heavy trailer attached.
• If you are driving under winter conditions or on unsurfaced roads.
• When driving fast with hard acceleration and braking manoeuvres.
Synchronising the tyre monitoring system
The tyre monitoring system will have to be re-synchronised after changing the tyre pressure, or after changing one or more wheels. This also ap-plies for changing the wheels, e.g. from the front to the rear, and for changing from summer tyres to winter tyres.
The saved values must be reset before the system can be resynchronised.
• Switch on the ignition, and while the vehicle is stationary
• Press and hold the =>Fig. 253 button until an acoustic confirmation signal is emitted.
• OR: with some vehicle equipment options, you can open menu option Tyre pressure in the in-strument cluster display and save the new tyre pressures there =>page 24.
Once the saved values have been reset, the sys-tem calibrates itself independently to the fitted tyres and the tyre pressures filled by the driver dur-ing normal vehicle operation. The calibrated values are adopted and monitored after a long journey at various speeds.
If the wheels are loaded more heavily than normal, e.g. if the vehicle is carrying heavy payload, the tyre pressure must be raised to the recommended full-load tyre pressure before synchronisation =>page 367.
m The tyre monitoring system stops working if l!.J there is a fault in the ESC or ASS =>page 269.
m When using snow chains, an incorrect dis-l!.J play may be shown as the snow chains in-crease the tyre circumference =>page 367. Driver assist systems I 321

Washing the vehicle
r-f'n First read and observe the introductory Information and safety warnings & on page 380.
The longer substances such as insects, bird drop-pings, resinous tree sap, road dirt, industrial de-posits, tar, soot or road salt and other corrosive materials remain on the vehicle, the more damage they do to the paintwork. High temperatures (for in-stance in strong sunlight) accelerate the corrosion process. The underside of the vehicle should also be cleaned thoroughly and regularly.
Car washes
Please observe the signs on the automatic car wash. Before using an automatic car wash take the usual precautions, such as closing all windows and folding in the exterior mirrors, in order to avoid damage to the vehicle. You must consult the car wash operator if there are special parts on your ve-hicle such as spoilers, roof luggage carrier systems or radio aerials ::.CD.
The paint is so hard-wearing that the car can nor-mally be washed without problems in an automatic car wash. However, the effect on the paint de-pends to a large extent on the design of the car wash. Volkswagen Commercial Vehicles recom-mends the use of car washes without brushes.
To remove any wax residue from the windows and to stop wipers rubbing, please note the following points ::.page 382, Cleaning windows and exterior mirrors.
Washing the car by hand
When washing by hand, first soften the dirt with plenty of water and rinse off as well as possible.
Then clean the vehicle with a soft sponge, a glove or a brush using only light pressure. Start with the roof and work from the top to the bottom. Use a shampoo for very stubborn dirt only.
The sponge or glove should be wrung out thor-oughly at regular intervals.
Clean the wheels, sill panels etc. last. Use a differ-ent sponge for this purpose.
A WARNING
Parts of the vehicle with sharp edges can cause Injury.
• Protect your hands and arms from cuts on sharp parts, for example when cleaning the underbody or the inside of the wheel hous-lngs.
A WARNING
After the car has been washed, the braking effect could set in later than normal and ex-tend the braking distance as the brake discs and brake pads will be wet, or iced up In win-ter.
• You can "dry and de-ice" the brakes by performing careful braking manoeuvres. Make sure that you do not endanger any oth-er road users or violate any legal regulations when doing so.
CD
• The water should be no warmer than +so•c (+140.FJ.
• Do not wash the vehicle in direct sunlight in order to avoid damage to the vehicle palntwork.
• Never clean with insect sponges, rough kitchen sponges or similar products as these can damage the surface.
• Never clean the headlights with a dry cloth or sponge. Always use a wet cloth or sponge. lt is best to use soapy water.
• Washing the vehicle In cold weather: if the vehicle is rinsed with a hose, do not direct the water at the lock cylinders or the gaps around the doors, boot, or bonnet. The locks and seals could freeze.
CD
Observe the following guidelines before driving the vehicle into an automatic car wash in order to avoid damage to the vehicle:
• Ensure that the gap between the guide rails In the car wash is sufficient for the vehicle track. If the track is too narrow your wheels and tyres will be damaged.
• Switch off the rain sensor before driving the vehicle Into an automatic car wash.
• Check that the car wash is tall and wide enough for your vehicle.
• Fold In the exterior mirrors. Electrically fold-Ing exterior mirrors must be moved electrically. Do not fold them in and out by hand.
• In order to prevent damage to the palntwork on the bonnet, fold the wipers back onto the windscreen after drying the wiper blades. Do not drop the wipers onto the glass.
• Lock the tailgate to prevent it from opening accidentally In the car wash. Vehicle care and maintenance 381