2012 VOLKSWAGEN TRANSPORTER ABS

Symbol Meaning=>& See
.......,. Front brake pads worn .
Lit up: ESC fault or switched off for system-related reasons.
Flashing: ESC/TCS is taking corrective action. =>page 269
1} TCS switched off manually.
e ABS faulty or not functioning.
0$ Rear fog light switched on. =>page 106
Lit up: vehicle lighting not working partially or completely. =>page 432
0 Lit up or flashing: catalytic converter fault.
w Lit up: glow period for a diesel engine.
Flashing: fault in engine management system.
EPC Fault in engine management system. =>page 407
Diesel particulate filter has become saturated with soot.
Only for specially equipped courier vehicles: diesel particulate filter is being regenerated.
(1) Tyre pressure too low. =>page 367 Tyre monitoring system faulty.
0 Windscreen washer fluid level too low. =>page 116
f] Fuel tank almost empty. =>page 340
Flashing: engine oil system fault.
Lit up: engine oil level too low. =>page 353
....... Fault in airbag and belt tensioner system. =>page 87
tf'
Front passenger front airbag switched off (PASSENGER AIR BAG =>page 87
f9 Ad Blue® level is low. =>page 346
/>.
with Ad Blue® system faulty or not refilled using norm-standard AdBI-ue®. =>page 346
Have the air filter replaced. => Booklet SeNice schedule
a, Electronic Immobilizer active. =>page 257
Lit up: rear axle differential lock switched on. =>page 282 .... Flashing: rear axle differential lock fault.
Adaptive cruise control (ACC) currently not available. =>page 298
Instrument cluster 17

Things to note when driving with a trailer
• If the trailer has an overrun brake, apply the brakes gently at first and then firmly. This will pre-vent the jerking that can be caused by the trailer wheels locking.
• The combination weight causes the braking dis-tance to increase.
• Select a low gear before driving down a slope. This enables you to use the engine braking effect to slow down the vehicle. The brake system could otherwise overheat and fail.
• The vehicle's centre of gravity and, in turn, the vehicle's handling, will change because of the trail-er load and the increased combined towing weight of the vehicle and trailer.
• The weight distribution of a loaded trailer with an unladen towing vehicle is very unfavourable. When driving in this situation, drive particularly carefully and slowly.
Tachograph
In most European countries, a tachograph has to be installed in the vehicle and used if the gross combination weight rating of the vehicle and trailer is over 3,500 kg.
• Observe the legal requirements governing the use of tachographs.
Pulling off on slopes when towing a trailer
A vehicle towing a trailer is liable to roll back a short distance when moving off on a slope, de-pending on the angle of the slope and the total weight of the trailer and vehicle.
When towing a trailer, pull off on slopes as follows:
• Depress and hold the brake pedal.
• Manual gearbox: depress the clutch fully.
• Select first gear or D =:o page 260, Changing gears.
Trailer stabilisation
r-('n First read and observe the introductory L-J,:.U information and safety warnings & on page 139.
The trailer stabilisation function can de-
tect if an attached trailer is starting to
lurch from side to side and can provide
countersteer.
• Unlock hand brake and carefully release while holding down lock button. At the same time, gently depress the accelerator and, in a manual vehicle, release the clutch pedal, until you feel the vehicle moving forwards. If necessary, read the notes on the Hill Hold Assist function =:o page 282, Pull-away assist systems.
• Only let go of the handbrake lever when the en-gine has sufficient power to move off.
• Pull away slowly.
A WARNING
Incorrect trailer towing can cause loss of ve-hicle control and serious personal injury.
• Towing a trailer and transporting heavy or bulky items can change the way the vehicle handles and increase the braking distance.
• Always drive carefully and think ahead. Brake earlier than in normal driving.
• Always adapt your speed and driving style to suit visibility, weather, road and traffic con-ditions. Reduce your speed, particularly when going downhill.
• Accelerate carefully and gently. Avoid abrupt and sudden driving and braking ma-noeuvres.
• Take special care when overtaking. Re-duce your speed immediately if the trailer shows even the slightest sign of snaking.
• Never try to stop a trailer from snaking by increasing your speed.
• Always obey speed limits. In some areas speed limits for vehicles towing trailers are lower than for vehicles without trailers. The trailer stabilisation function is an extension to the electronic stabilisation program (ESC). it helps to reduce the risk of skidding when a trailer is be-ing towed.
If, however, the effects of this snaking on the vehi-cle are detected via the ESC control unit, the vehi-cle is braked automatically by the ESC in order to stabilise the trailer. In this case the ABS indicator lamp flashes .,.
Transporting items 1147

The batteries will become depleted if electrical consumers such as the auxiliary heater, refrigera-tor box or interior lights are used while the vehicle is stationary for long periods of time without re-charging the batteries. If the battery voltage falls below 11.5 volts, the auxiliary heater cannot be switched on.
The battery compartment and the battery charger are designed specifically for the factory-fitted AGM (absorbed glass mat) batteries &.
Additional batteries
r--f'n First read and observe the introductory information and safety warnings & on page 242.
The factory-fitted AGM batteries are located under the left front seat and in the wardrobe. They have deep discharge protection.
Should the additional batteries be subjected to deep discharge over a long period of time, they could be destroyed.
You can prevent deep discharge by:
• switching off the central control panel after charging,
• removing the fuses for the fresh water pump and the pop-up roof as necessary 249.
AGM batteries are maintenance free. do not leak their electrolyte, are robust and have extremely low gas emissions.
When should the additional battery be charged?
• If the additional battery is not charged by the al-ternator while the engine is running, the additional battery must be charged on the battery charger at regular intervals -every 4 weeks at the latest-for at least 12 hours.
• The additional battery must be recharged for at least 12 hours before the start of a journey if the battery has not been used for an extended period (e.g. seasonal use).
248 I Before the JOurney
A WARNING
If a conventional battery Is charged it will give off a highly explosive mixture of gases.
• Use only AGM batteries of the same type (batteries with the electrolyte absorbed Into a special fibreglass matting) and with the same specifications as the factory-fitted batteries.
• Never use conventional batteries (wet cells with liquid electrolyte). A WARNING
If a conventional battery Is charged it will give off a highly explosive mixture of gases.
• Use only AGM batteries of the same type (batteries with the electrolyte absorbed into a special fibreglass matting) and with the same specifications as the factory-fitted batteries.
• Never use conventional batteries (wet cells with liquid electrolyte).

Warning and indicator lamps
[Q First read and observe the Introductory information and safety warnings & on page 269.
Lit up Possible cause=>&
Handbrake is applied.
Brake system fault.
Brake fluid level is too low.
Together with ABS indicator lamp El: ABS not functioning.
-...-Brake pads worn .
ESC switched off by the system.
ESC fault.
In conjunction with ABS indicator lamp CS>: ABS fault.
Vehicle battery has been reconnected.
TCS switched off manually.
In conjunction with ESC indicator lamp
((oil ABS fault.
In conjunction with warning lamp ID: ABS not functioning.
Brake pedal not depressed.
Flashes Possible cause
'• ESCITCS is taking corrective action.
Trailer stabilisation controlled.
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.
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.
270 I While driving
Solution
f; Do not drive on I Seek expert assistance immediately =>page 273.
a:. Do not drive on I Check the brake fluid level =>page 277.
Go to a qualified workshop. The vehicle can be braked without ABS.
Go to a qualified workshop immediately. All brake pads should be checked and renewed as necessary.
Switch the ignition on and off. If necessary, drive a short distance.
Go to a qualified workshop.
Go to a qualified workshop. The vehicle can be braked without ABS.
Drive a short distance at a speed of 15 -20 km/ h (10 -12 mph). if the indicator lamp remains lit up, the vehicle should be checked by a qualified workshop =>page 362.
Switch on TCS =>page 276. Switch on TCS au-tomatically by switching the ignition off and on.
Go to a qualified workshop. The vehicle can be braked without ABS.
To select a position, press the brake pedal.
Solution
Remove foot from accelerator pedal. Adapt driv-ing style to suit road conditions.
Remove foot from accelerator pedal. If possible, do not turn the steering wheel =>page 139.
A WARNING (Continued)
• Never ignore any illuminated warning lamps or text messages.
• Stop the vehicle as soon as possible and when safe to do so.
A WARNING
Driving with poor brakes can result in acci-dents and serious injuries.

A WARNING (Continued)
• If the brake warning lamp ID does not go out, or if it lights up when driving, the brake fluid level in the reservoir is too low or there is a fault in the brake system. Stop the vehi-cle Immediately and seek expert assistance 277, Brake fluid.
• If the brake warning lamp@ lights up to-gether with the ABS indicator lamp S, the control function of the ABS may have failed. This can cause the rear wheels to lock quick-ly when you brake. Locked rear wheels can lead to a loss of control of the vehicle. If pos-sible, reduce your speed and drive carefully at low speed to the nearest qualified work-shop in order to have the brake system tes-ted. Avoid sudden braking and driving ma-noeuvres on the way.
• The ABS Is not functioning correctly if the ABS indicator lampS does not go out or comes on while the vehicle is in motion. The
Handbrake
Fig. 223 Handbrake between the front seats.
r--fl1 First read and observe the introductory L-J,::.IJ information and safety warnings & on page 269.
Applying the handbrake
• Lift the handbrake lever up fully.
• The handbrake is applied when the indicator lamp ID lights up in the instrument cluster =-page 270.
Releasing the handbrake
• Lift the handbrake lever up slightly and press the lock button ::.Fig. 223 (arrow).
• Guide the handbrake lever down whilst the lock button is pressed.
A WARNING (Continued)
vehicle can be stopped using the normal brakes only (without ABS). The protection provided by ABS is no longer available. Go to a qualified workshop as soon as possible.
• If the warning lamp 0 lights up either indi-vidually or together with a text message in the display of the instrument cluster, go to a qualified workshop immediately to have the brake pads checked or any worn brake pads replaced.
CD
Failure to observe illuminated indicator lamps and text messages can lead to your vehicle be-Ing damaged. A WARNING
Incorrect use of the handbrake can cause ac-cidents and serious Injuries.
• The handbrake should never be used to brake the vehicle, except in emergencies. The braking distance is considerably longer as only the rear wheels are braked. Always use the foot brake.
• Never drive the vehicle with the handbrake lightly applied. This can overheat the brakes and adversely affect the brake system. lt can also cause premature wear to the rear brake pads.
• Never activate the accelerator from the en-gine compartment if a position or gear has been selected and the engine is running. The vehicle can start to move even if the hand-brake Is applied.
CD
To avoid unintentional movement when parking the vehicle, first apply the handbrake and then remove your foot from the brake pedal.
r::l An acoustic warning is given if the car is driv-L.!:.J en faster than approximately 6 km/h (4 mph) with the handbrake applied. Starting the engine, changing gear and parking I 271

A WARNING (Continued)
• If the brake servo does not function or the vehicle is being towed, the brake pedal will have to be depressed more forcefully as the braking distance will be Increased due to the lack of assistance for the brake system.
CD
• Never let the brakes "rub" by applying light pressure to the brake when it is not necessary to brake. Continual pressure on the brake pedal will overheat the brakes. This can considerably reduce the brake effect, increase the braking distance and, In certain circumstances, cause the brake system to fail completely.
Brake support systems
r-f'n First read and observe the Introductory l..-Wl information and safety warnings&. on page 269.
The brake support systems ESC, ABS, BAS, TCS and EDL only function when the engine is running. They make a considerable contribution to active driving safety.
Electronic stability control (ESC)
The ESC helps to reduce the risk of skidding and to improve driving stability by braking individual wheels in certain driving situations. The ESC de-tects critical driving situations such as oversteer, understeer and wheelspin. The system helps to stabilise the vehicle through targeted application of the brakes or by reducing engine torque.
ESC has its limitations. lt is important to realise that ESC cannot overcome the laws of physics. ESC will not be able to assist in every situation faced by a driver. For example, ESC will not be able to assist every time that there is a sudden change in the road surface quality. If a section of dry road is suddenly covered with water, mud or snow, ESC will not be able to assist in the same manner as on a dry road. If the vehicle aquaplanes (drives on a layer of water rather than on the road surface), ESC will not be able to assist in steering the vehicle as the contact to the road surface has been interrupted and it is therefore no longer pos-sible to steer or brake the vehicle. When driving at speed through bends, particularly on stretches of road with many bends, the ESC will not always be able to process complicated driving situations as
2741 While dnvang
• Before driving down a long, steep gradient, reduce speed and change to a lower gear or move the selector lever to a lower position. This will make use of the engine braking effect and relieve the load on the brakes. The brakes could otherwise overheat and possibly fall. The brakes should only be used to slow or stop the vehicle.
m If the front brake pads are tested, the rear L!..J brake pads should be tested at the same time. Regularly check the thickness of the brake pads through the openings in the rims or from the underside of the vehicle. If necessary, remove the wheels to carry out a comprehensive check. Volks-wagen Commercial Vehicles recommends using a Volkswagen Commercial Vehicles dealership for this purpose. effectively as at lower speeds. When towing a trail-er, ESC is unable to assist the driver in regaining control over the vehicle.
Always adapt your speed and driving style to suit visibility, weather, road and traffic conditions. ESC cannot defy the laws of motion, improve the availa-ble power output, or keep the vehicle on the road if insufficient care and attention on the part of the driver causes the vehicle to leave the road. In-stead, the ESC improves the chances of keeping the vehicle under control and, in extreme on-road driving situations, exploits the driver's steering in-put to keep the vehicle travelling in the desired di-rection. If the vehicle is driving at a speed that leads it to leave the road before the ESC can pro-vide any kind of support, the ESC will be unable to provide any assistance.
The ASS, BAS, TCS and EDL systems are integra-ted into the ESC. The ESC is always on. If the trac-tion achieved in certain situations is not sufficient, TCS can be switched off by pressing the ASR (TCS) button =>Fig. 224. Always ensure that ASR (TCS) is switched back on again once traction is sufficient.
Automatic Post-Collision Braking System
In the event of an accident, the Automatic Post-Collision Braking System can help the driver to re-duce the risk of skidding, and the danger of secon-dary collisions, through automatic braking.

The Automatic Post-Collision Braking System only functions in frontal, side and rear collisions if the airbag control unit registers the corresponding trig-gering threshold during the accident, and the acci-dent occurs at a speed greater than 10 km/h (6 m ph).
The ESC brakes the vehicle automatically, provi-ded that the hydraulic braking system, the ESC and the electrical system are undamaged in the accident and remain functional.
The following actions override automatic braking in the event of an accident:
• When the driver depresses the accelerator. No automatic braking occurs.
• When the brake pressure transmitted through the depressed brake pedal is greater than the brake pressure provided by the system. The vehi-cle is braked manually.
Anti-lock brake system (ABS)
The ABS prevents the wheels from locking when the brakes are applied up until the point where the vehicle is nearly stationary and assists the driver in steering the vehicle and keeping it under control. This means that the vehicle is less likely to spin, even when the brakes are depressed fully:
• Depress and hold the brake pedal with force. Do not take your foot off the brake pedal or reduce the force on the brake pedal.
• Do not pump the brake pedal or reduce the pressure on the brake pedal.
• Steer the vehicle while the brake pedal is fully depressed.
• The ABS will switch off when the brake pedal is released or if the pressure on the brake pedal is reduced.
If the ABS is taking corrective action, there is a pulsing movement in the brake pedal and some noise. However, ABS will not necessarily guaran-tee shorter braking distances in a// conditions. The braking distance could even be longer when brak-ing on gravel or on fresh snow covering an icy or slippery surface.
Brake Assist system (BAS)
The Brake Assist system can help to reduce the braking distance. The Brake Assist system reinfor-ces brake pressure when the driver depresses the brake pedal quickly in an emergency situation. As a result, full braking power is made accessible very quickly, braking power is reinforced and the brak-ing distance reduced. This means that the ABS is activated more quickly and more effectively.
Do not reduce the pressure on the brake pedal. The Brake Assist system will switch off the brake servo automatically when the brake pedal is re-leased or if the pressure on the brake pedal is re-duced.
Traction control system (TCS)
The TCS reduces the engine output if wheels pin occurs and adapts the output to suit road surface conditions. TCS helps the car to start moving, ac-celerate and climb gradients in unfavourable road conditions.
The TCS can be switched on and off manually 276.
Electronic differential lock (EDL)
The EDL is available for normal driving on straight roads. EDL brakes the wheel that has lost traction and distributes the driving force to the other drive wheels. To prevent the disc brake of the braked wheel from overheating, the EDL cuts out automat-ically if subjected to excessive loads. The EDL will switch on again automatically when the brake has cooled down.
A WARNING
Driving fast on icy, slippery or wet roads can lead to a loss of control of the vehicle and could cause serious injury to the driver and passengers.
• Always adapt your speed and driving style to suit visibility, weather, road and traffic con-ditions. Do not Jet the extra safety afforded by the brake support systems ABS, BAS, EDL, TCS and ESC tempt you into taking any risks when driving.
• The Intelligent technology of the brake support systems cannot overcome the Jaws of physics or system-related vehicle limita-tions. Slippery and wet roads will remain dan-gerous, even when the ESC and other sys-tems are active.
• Driving too fast on wet roads can cause the wheels to Jose contact with the road sur-face and aquaplane. The vehicle cannot be braked, steered or controlled once it has lost contact with the road surface.
• Brake support systems cannot prevent an accident if, for example, you are driving too close to the vehicle in front or are driving too fast for the individual situation. .,.
Starting the engine, changing gear and parking 275

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. The Electronic Stability Control (ESC) only func-tions when the engine is running. lt consists of ABS, EDL and TCS.
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.