2021 VOLKSWAGEN TRANSPORTER check engine

De-icing door lock cylinders
....-m First read and observe the introductory L-I=JJ information and safety warnings & on page 380.
Volkswagen Commercial Vehicles recommends the use of genuine Volkswagen spray with lubricating and anti-corrosive properties to de-ice the lock cyl-inders.
Undersea I
....-m First read and observe the introductory L-I=JJ information and safety warnings & on page 380.
The underside of the vehicle is coated to protect it from corrosion and damage. The protective coating on the underside of the vehicle could be damaged when driving. Therefore, Volkswagen Commercial Vehicles recommends that the protective coating on the underside of the vehicle and on the running gear should be checked regularly and repaired if necessary.
Cleaning the engine compartment
....-m First read and observe the introductory L-I=JJ information and safety warnings & on page 380.
The engine compartment of any motor vehicle is a hazardous area L1l. 350.
The engine compartment should be cleaned by a qualified workshop. Corrosion protection could be removed and electrical components damaged if the compartment is cleaned incorrectly. Further-more, water could enter the vehicle interior directly via the plenum chamber
If the engine compartment is very dirty, we recom-mend that you always go to a qualified workshop to have it cleaned by a professional mechanic. Volkswagen Commercial Vehicles recommends us-ing a Volkswagen Commercial Vehicles dealership for this purpose.
Plenum chamber
The plenum chamber is located in the engine com-partment between the windscreen and the engine and has a perforated cover. Air from outside is
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Do not use lock de-leers containing substances that dissolve grease, as this can cause the door lock cylinder to rust. A CAUTION
Undersea! and anti-corrosion coatings can ig-nite on the hot exhaust system or on other hot engine parts.
• Never apply undersea! or anti-corrosion coatings to the exhaust pipes, catalytic con-verter, heat shields or other vehicle compo-nents that become hot. drawn in from the plenum chamber and is passed into the vehicle interior via the heating and air con-ditioning system.
Leaves and other loose objects must be removed from the cover of the plenum chamber at regular intervals using a vacuum cleaner or by hand.
A WARNING
All work in the engine compartment carries the risk of injury, scalding, accidents and fire.
• Before carrying out any work, ensure that you are familiar with the requisite procedures and general safety regulations 350.
• Volkswagen Commercial Vehicles recom-mends having the work carried out by a quali-fied workshop.
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Water that has entered the plenum chamber via a manual process (e.g. from a high-pressure cleaner) can cause considerable damage to the
vehicle. "'
Vehicle care and maintenance I 387

Retrofitting two-way radios
.--m First read and observe the introductory L-.lc.U information and safety warnings & on page 394.
You will need an external aerial to use a two-way radio in the vehicle.
Any retrofit installation of electrical or electronic equipment in the vehicle will affect its vehicle type approval. Under certain circumstances, this can negate the type approval for the vehicle.
Volkswagen Commercial Vehicles has approved the vehicle for use with two-way radios providing the following conditions are observed:
• Correct installation of external aerial.
• A maximum transmitting power of 10 watts.
The equipment can only operate at maximum range with an external aerial.
Check first with a qualified workshop if you wish to use a two-way radio with a transmitting power of over 10 watts. Qualified workshops are familiar with the technical options for retrofitting. Volkswa-gen Commercial Vehicles recommends using a Volkswagen Commercial Vehicles dealership for this purpose.
Information stored in the control units
.--m First read and observe the introductory L-.lc.U Information and safety warnings & on page 394.
Your vehicle is factory fitted with electronic control units which are responsible for engine and gearbox management. The control units also monitor the function of the exhaust system and the airbags.
These electronic control units continuously evalu-ate data relevant to the vehicle while the vehicle is being driven. Only these data will be stored if there are any faults recorded or any deviations from the specified values. This is generally displayed by the indicator lamps on the instrument cluster.
Special units are required to read and evaluate da-ta stored in the control units.
These data are stored so that specialist workshops can diagnose and solve problems. The following data may have been stored:
• Engine and gearbox-relevant data.
• Speed.
• Direction of travel.
398 Cleaning and maintenance
Please comply with relevant legislation and the in-structions and information given in the operating manuals for radio equipment.
A WARNING
If radio equipment is not secured or not prop-erly secured in the vehicle, it could be flung though the interior during a sudden driving or braking manoeuvre, or In the event of an accident. This can cause Injuries.
• While the vehicle is in motion, always se-cure radio equipment properly outside the airbag deployment zone or stow them away safely.
A CAUTION
If you use two-way radios in the car without an external aerial, electromagnetic radiation in the vehicle could exceed limit values. This also applies to external aerials which have not been correctly installed.
• Two-way radios should only be used In the vehicle If an external aerial Is properly connected.
• Braking power.
• Seat belt monitor.
The control units never record conversations that take place in the vehicle. it is neither possible nor permitted to use the stored data to create move-ment profiles.
When the vehicle is being used, situations may arise in which the stored data (alone or in conjunc-tion with other information such as accident re-ports, vehicle damage, witness statements etc.) can become assignable to a particular person, whereby consultation of an expert and use of the expert's information may be necessary.
In vehicles with an emergency call function via a mobile telephone or other units, the current loca-tion can be transmitted. In the event of an accident in which the control units register that an airbag has been triggered, the system can automatically send out a signal. This depends on your service provider. Transmission is possible only in areas
with a sufficiently strong mobile telephone signal. .,..

Vehicle lifting points
Fig. 287 Lifting points at front for the lifting plat-form or vehicle jack.
First read and observe the introductory l.-J,::..U information and safety warnings & on page 394.
The vehicle may only be lifted at the points shown in the illustrations =>Fig. 287 and =>Fig. 288. If the vehicle is not raised on the lifting points shown, the vehicle could be damaged => &.
Lifting platforms with fluid filled cushions (receiving platforms) may not be used for lifting the vehicle.
There are many precautions that have to be fol-lowed when lifting a vehide on a workshop hoist or floor jack. Do not try to lift a vehicle on a lifting plat-form or vehicle jack unless you have the training, knowledge and experience to be able to do so safely.
Using the jack to lift the vehicle =>page 423.
A WARNING
Lifting your vehicle incorrectly with a lifting platform or vehicle jack can cause accidents and serious personal injury:
• Always read and heed the operating in-structions from the lifting platform or vehicle jack manufacturer and any legal regulations before lifting the vehicle.
• All occupants should leave the vehicle be-fore it is lifted.
• The vehicle should only be lifted at the points indicated In the illustrations =>Fig. 287 and =>Fig. 288. If the vehicle is not lifted at
Fig. 288 Lifting points at rear for lhe lifting plat-form or vehicle jack.
A WARNING_(Contlnued)
the points shown, it could fall off the lifting platform when work is being carried out, e.g. when the engine or gearbox is removed.
• The vehicle jacking points must be placed on the centre of the vehicle lift support surfa-ces, with as much surface contact between the vehicle and the support surfaces as pos-sible.
• Never start the engine when the vehicle is raised. The vibration of the engine could cause the vehicle to fall off the lifting point.
• If work has to be carried out underneath the lifted vehicle, secure the vehicle with suit-able jack stands with a sufficient load-bear-ing capacity.
• Never climb up the lifting platform.
• Always check that the vehicle is not heavi-er than the lifting capacity of the lifting plat-form.
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• Never lift the vehicle by the engine oil sump, the gearbox or the front or rear axle.
• To prevent damage to the underside of the vehicle when lifting, rubber pads must be used. Ensure that the lifting platform arms are able to move freely.
• The lifting platform arms must not be al-lowed to come Into contact with the sills or any other part of the vehicle. Vehicle care and maintenance 1401

Recycling and scrapping end-of-life vehicles
rl'l1 First read and observe the Introductory L-J,:,JJ information and safety warnings & on page 404.
Recycling end-of-life vehicles
Volkswagen Commercial Vehicles has already made provision for the time when you choose to have your vehicle recycled in an environmentally-friendly manner. The recycling system operating in many European countries will take back your vehi-cle at the end of its useful life. Once the vehicle has been recycled, a certificate of destruction will be issued to show that the vehicle has been dis-posed of correctly.
End-of-life vehicles are recycled free of charge, provided that national legislation is complied with.
Further information on the recycling of end-of-life vehicles can be found at a Volkswagen Commer-cial Vehicles dealership.
Scrapping
The relevant safety requirements must be ob-served when the vehicle or components of the air-bag and the belt tensioners are scrapped. Quali-fied workshops are familiar with these require-ments. Engine management system and exhaust purification system
o:JJ Introduction
This chapter contains information on the following subjects:
Indicator lamps . . . . . . . . . . . . . . . . 407
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 408 Diesel particulate filter . . . . . . . . . . 409
Additional information and warnings:
• Changing gear =>page 260
• Filling the tank =>page 340
• Fuel =>page 343
• Engine oil =>page 353
• Battery =>page 362
• Information stored in the control units =>page 394
• Tow-starting and towing =>page 446
Indicator lamps
A WARNING
The components of the exhaust system be-come very hot. This can cause fires.
• Park the vehicle so that no part of the ex-haust system can come into contact with any inflammable material underneath the vehicle, e.g. dry grass.
• Never apply undersea! or anti-corrosion coatings to the exhaust pipes, catalytic con-verter, diesel particulate fitter or the heat shields on the exhaust system. [Q First read and observe the introductory information and safety warnings & on page 407.
lit up Possible cause Solution
Engine management system fault {Electron-The engine should be checked by a qualified
J ic Power Control). workshop as soon as possible.
R Diesel engine is preheating before starting. =>page 257
Decrease speed. Drive carefully to the next Fault in catalytic converter . qualified workshop. The engine should be ..... checked.
Vehicle care and maintenance 407

Lit up Possible cause Solution
Drive in 4th gear (manual gearbox) or in gear D (DSG® dual clutch gearbox) at a speed of at
Diesel particulate filter has become satura-least 70 km/h (43 mph) for approximately 15 mi-nutes. ted with soot (except for courier vehicles). Observe the valid speed limits &. Go to the nearest qualified workshop if the indi-cator lamp still does not go out 409.
If possible, do not switch off the engine.
Only for specially equipped courier vehi-Please observe the applicable regulations for switching off the engine in special traffic situa-cles: lions (e.g. at level The indicator diesel particulate filter is being regenerated. lamp switches off when the diesel particulate fil-ter has been regenerated.
Flashes Possible cause Solution
Fault in engine management system (diesel The engine should be checked by a qualified } engine).
Misfiring, which damages the catalytic con-vert er.
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
Please observe legal requirements If cleaning the diesel particulate filter when in traffic.
• Follow driving recommendation only if visibility, weather, road and traffic conditions are suitable.
• Do not endanger other vehicles on the road.
A WARNING
The exhaust fumes contain carbon monoxide, an odourless and colourless toxic gas. Car-bon monoxide can cause people to lose con-sclousness. lt can also cause death.
• Never start or run the engine In unventlla-ted or closed spaces.
• Never leave the engine running If you leave the vehicle unattended.
Catalytic converter
,..-('n First read and observe the introductory L-J,:.U Information and safety warnings & on page 407.
408 I Cleaning and maintenance
workshop as soon as possible.
Decrease speed. Drive carefully to the next qualified workshop. The engine should be checked.
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To avoid damage to your vehicle, always ob-serve the Indicator lamps and associated warn-Ing texts.
m If the indicator lamps -.. c or EPC are lit up, L!J fuel consumption may be higher and engine performance reduced. The catalytic converter is used for exhaust gas post-treatment and helps to reduce exhaust emis-sions. To help ensure long-term functionality in the exhaust system and the catalytic converter: .,.

If and when
Practical tips
Frequently asked questions
If you suspect that a vehicle fault has arisen or your vehicle has been damaged, read and observe the following information before contacting a Volkswagen Commercial Vehicles dealership or
qualified workshop. You may also find useful infor-mation in the index under the headings "Things to note" or "Checklist".
To note Some possible causes Possible solution
Vehicle battery is discharged. -How to jump start =>page 443. -Recharge vehicle battery 362.
Engine does not start. The incorrect vehicle key is be-Use a valid vehicle key 36. ing used.
Fuel level is too low. Fill the tank 340.
Supplementary heating system Switch off the supplementary heating
Smoke is coming from the is running. system 332. wing. Supplementary heater is run-No solution 345. ning.
-Battery in the remote control -Replace the battery 36. Vehicle cannot be locked or key is flat. -Move closer to the vehicle. unlocked with the remote -Located too far away from the -Synchronise the vehicle key =>page 36. vehicle. control key. -Buttons were pressed outside -Lock or unlock the vehicle manually
the range. 413.
Cold engine. brake assist sys-Refer to the index under entries for Unusual noises. tems, supplementary heating "Noises". system.
Assist systems are active. Refer to the index under entries for "As-sist systems". Unusual handling. DSG® dual clutch gearbox is too Stop the vehicle immediately hot. 266.
Front seats cannot be ad-Vehicle battery is discharged. Recharge vehicle battery 362.
justed electrically. Fuse blown. Check fuse and replace as necessary 429.
The vehicle has no vehicle No direct solutions possible as it depends
jack, spare wheel or break-Equipment depends on type of on the equipment level. Contact a Volks-vehicle. wagen Commercial Vehicles dealership if down set. necessary 416.
-Windows or sliding roof are open. The interior monitoring sys--Item attached to the interior Remove any objects that could trigger a tem triggers a false alarm. mirror is moving. false alarm 44. -A mobile telephone is vibrating inside the vehicle.
Functions are not working Settings have been made in the Check and if necessary reset back to fac-as described in the owner's manual. Volkswagen information system. tory settings 24.
410 I If and when

To note Some possible causes Possible solution
-Headlights are adjusted for -Change over the headlights for driving driving on the left or right. on the left or right 106. The road ahead is not lit up -Headlight beams set too high. -Set the headlight range 106. properly. -Bulbs are defective. -Change the bulbs 432. -The dipped beam headlights -Switching on dipped headlights are not switched on. 106.
Low vehicle battery charge. Recharge vehicle battery 362.
Electrical consumers not Low fuel level. Fill the tank 340. working. Fuse blown. Check fuse and replace as necessary 429.
-Short journeys. -Avoid short journeys.
-Uneven acceleration. -Think ahead when driving. -Accelerate evenly.
An electrical consumer is switch-Switch off all consumers that are not nee-ed on. de d.
Fault in engine management Have the fault rectified 407. Fuel consumption is higher system. than indicated. Tyre pressure too low. Adjust the tyre pressure 367.
Driving in hilly regions. No direct solutions possible.
Driving with a trailer or roof carri--Check whether it is needed. er. -Remove when not being used.
Driving with a heavy load. No direct solutions possible.
Driving at high engine speed. Select a high gear.
In an emergency
COl Introduction
This chapter contains information on the following subjects:
Making you and your vehicle safe . . 412
First aid kit. warning triangle, high-visibility waistcoat and fire extinguisher . . . . . . . . . . . . . 413
Additional information and warnings:
• Braking, stopping and parking 269
• Manual opening and closing 413
• Vehicle toolkit 416
• Changing a wheel 420
A WARNING
Any broken-down vehicle Increases the risk of accidents in road traffic-both for you and other road users.
• Stop the vehicle as soon as possible and when safe to do so. Park the vehicle at a safe distance from moving traffic In order to lock all doors securely In an emergency. Switch on the hazard warning lights to warn other road users.
• Never leave children or people requiring assistance alone In the vehicle when the doors are locked. This may mean that they are locked In the vehicle in an emergency. People locked In the vehicle may be subjec-
ted to very high or very low temperatures. Practical tips 1411

Making you and your vehicle safe
8S0.00)7
Fig. 289 In the middle of the dash panel: hazard warning light switch.
f"'""'('n First read and observe the Introductory L-lo:.U Information and safety warnings Lb. on page 411.
Observe any legislation concerning the safety of a broken down vehicle. For example, many countries stipulate that you have to switch on the hazard warning lights and wear a high-visibility waistcoat =>page 413.
Checklist
To ensure your own safety and the safety of your passengers, observe the following actions in the specified order => &:
1. Stop the vehicle at a safe distance away from moving traffic and on a suitable sur-face=>&.
2. Switch on the hazard warning lights using button =>Fig. 289.
3. Apply the handbrake =>page 269.
4. Select the neutral position or move the se-lector lever to P =>page 260.
5. Stop the engine and remove the key from the ignition =>page 257.
6. Ensure that all occupants exit the vehicle and go straight to a safe place away from moving traffic, e.g. behind the safety barrier.
7. Take all vehicle keys with you when you leave the vehicle.
8. Place the warning triangle in position to draw the attention of other road users to your vehicle.
9. Allow the engine to cool down and seek ex-pert assistance.
4121 If and when
When the hazard warning lights are switched on, for example if the vehicle is being towed, a change in direction or lane change can still be indicated by operating the turn signal. The warning lights will be interrupted temporarily.
Switch on the hazard warning lights:
• When traffic ahead suddenly starts moving more slowly or you reach the tail end of a traffic jam, to will warn vehicles behind you.
• When there is an emergency.
• When the vehicle breaks down.
• When the vehicle is being towed.
Always follow local regulations for the use of the hazard warning lights.
If the hazard warning lights are not working, use an alternative method of drawing attention to the bro-ken-down vehicle. This method must comply with traffic legislation.
A WARNING
Ignoring any of the items on this important safety checklist can lead to accidents and se-vere Injuries.
• Always follow the Instructions In the checklist and observe the general safety pro-cedures.
A wARNING
The components of the exhaust system be-come very hot. This can cause fires and seri-ous Injuries.
• Park the vehicle so that no part of the ex-haust system can come Into contact with any Inflammable material underneath the vehicle, e.g. dry grass, fuel.
m The vehicle battery will discharge if the haz-L.:!J ard warning lights are left on over a long peri-od of time -even when the Ignition is switched off.
m If you brake hard at speeds over approxi-L.:!J mately 60 km/h (37 mph), the brake lights will flash to warn the traffic behind. If you then continue to brake, the hazard warning lights will be switched on automatically at speeds under approximately 10 km/h (6 mph). The brake light will light up stead-Ily. Once the vehicle starts to accelerate, the haz-ard warning lights will switch off again.