check engine VOLKSWAGEN TRANSPORTER 2021 Workshop Manual

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.

Closing the sliding/tilting roof manually
r-111 First read and observe the introductory L-J,.:.U information and safety warnings & on page 413.
• Take the screwdriver from the vehicle tool kit.
• Remove cover with the sliding/tilting roof rotary button. Use the flat blade of the screwdriver side-ways between the cover and the roof console and pull it downwards.
• Fit a commercially available hexagon key1) of the right size in the hexagon socket head bolt and push the hexagon key approximately 2 mm up-wards.
• Turn the hexagon key to close the sliding/tilting roof.
• Remove the hexagon key and fit the cover again. The cover should lie flush with the surround-ing parts.
• The sliding/tilting roof should be checked by a qualified workshop. The functioning and roll-back function of the sliding/tilting roof could malfunction if it is closed manually. Unlocking the selector lever lock manually
BSG- Fig. 292 Removing the cover of the gearshift gate.
r-111 First read and observe the introductory L-J,.:.lJ information and safety warnings & on page 413.
If the power fails in the vehicle (for example if the battery is discharged) and the vehicle has to be pushed or towed, the manual release mechanism must be used to put the selector lever in the N po-sition.
The manual release mechanism is located under the cover of the gearshift gate.
Preparation
• Apply the handbrake.
• Switch off the ignition.
< CD
;;;: "' 1) Not included in the vehicle toolkit.
Removing the cover of the gearshift gate
• Using one finger, reach into the selector lever gaiter at the indicated Fig. 292 (arrow) and pull the cover upwards out of the dash panel.
• Pull the cover up and over the selector lever
Unlocking the selector lever lock manually
• Push the yellow release lever to the rear and hold it there.
• Press the lock button G) on the selector lever and put the selector lever into position N.
A WARNING
Never move the selector lever out of the posi-tion P if the handbrake is not finnly applied. Otherwise the vehicle could move unexpect-edly if it is stopped on an incline, which could lead to accidents and serious injuries.
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The automatic gearbox will become damaged if the vehicle is allowed to roll for a long period of time or at a high speed (for example while be-ing towed) with the selector lever in position N and the engine switched off. Practical tips 415

Changing a wheel
CllJ Introduction
This chapter contains information on the following subjects:
Preparations for changing a wheel . . . . . . . . . 420
Wheel bolts . . . . . . . . . . . . . . . . . . . 421
Lifting the vehicle with the jack . . . . . . . . . . . . 423
Changing a wheel . . . . . . . . . . . . . . . . . . . . . . . 424
After changing a wheel . . . . . . . . . . . . . 425
Some models are delivered without a factory-fitted jack or box spanner. If this is the case, the wheel should be changed by a qualified workshop.
The vehicle jack supplied with the vehicle is only designed for changing a wheel when one vehicle tyre is damaged and has to be replaced. Seek ex-pert assistance if both tyres on one side of the ve-hicle, both tyres on one axle, or all tyres are dam-aged.
Only change the wheel yourself when the car is parked in a safe place, you are familiar with the necessary steps and safety procedures and you have access to all the correct tools. Seek expert assistance if this is not the case.
Additional information and warnings:
• Exterior views =>page 5
• Vehicle key set =>page 36
• Tyre monitoring system =>page 318
• Wheels and tyres =>page 367
• In an emergency =>page 411
• Vehicle tool kit =>page 416
• Hubcaps =>page 417
Preparations for changing a wheel
1"1'11 First read and observe the introductory L-1o:.U information and safety warnings & on page 420.
Checklist
The following actions must always be carried out in the given order in preparation for changing the wheel=>&:
1. In the event of a flat tyre, park your vehicle on a firm and level surface at a safe dis-tance from the flow of traffic.
2. Apply the handbrake =>page 269.
420 I If and when
A wARNING
Changing a wheel can be dangerous, espe-cially when carried out at the side of a road. Please note the following steps in order to re-duce the risk of serious injuries:
• 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 carry out the wheel change.
• All passengers and children in particular must be at a safe distance and away from your area of work during the wheel change.
• Switch on the hazard warning lights to warn other road users.
• Check that the surface the vehicle Is parked on Is level and firm. If necessary use a large, strong board or similar support for the vehicle jack.
• Only change the wheel yourself if you feel confident carrying out the procedure. If not, seek expert assistance.
• Always use suitable and undamaged tools to change the wheel.
• Always switch off the engine, apply the handbrake and move the selector lever to the position P or select a gear on a manual gear-box in order to reduce the risk of unintended vehicle movement.
• The wheel bolt tightening torque should be checked with a torque wrench immediately after changing a wheel. 3. With a DSG® dual clutch gearbox, move the selector lever to position P =>page 260.
4. Stop the engine and remove the key from the ignition =>page 257.
5. Manual gearbox: select a gear =>page 260.
6. Make sure all vehicle occupants exit the ve-hicle and move to safety, for instance be-hind the safety barrier.
7. Chock the wheel diagonally opposite the wheel being worked on with a stone or a similar object. ""

Lifting the vehicle with the jack
Fig. 299 Jacking points.
Fig. 300 On the left side of the vehicle: jack fitted at the front [AI and at the rear [ID.
r-('n First read and observe the introductory l.,...Jc.ll information and safety warnings & on page 420.
The jack may be applied only at the jacking points shown (markings on the body) '*Fig. 299.
• Front jacking point: web under the vehicle, at a distance approx. of 9 cm (dimension x) from the outer edge of the vehicle 300
• Rear jacking point: web under the vehicle, at a distance approx. of 15 cm (dimension y) from the outer edge of the vehicle 300 [ID.
The jack may be applied only on this rib.
Always use the jacking point closest to the wheel you are working on &.
Checklist
To ensure your own safety and the safety of your passengers, observe the following actions in the specified order &:
1. Find a firm and level surface suitable for lift-ing the vehicle.
2. Stop the engine, select a gear of the manual gearbox or move the selector lever of the dual clutch gearbox DSG® to position P '*page 260, and apply the handbrake 269.
3. Chock the wheel diagonally opposite using the collapsible chocks or other suitable ob-jects.
4. When towing a trailer, unhitch the trailer from the vehicle and park it properly.
5. Loosen the wheel bolts on the wheel that is being changed 421.
6. Find the jacking point under the vehicle '*Fig. 299 which is closest to the wheel that is being changed. .,.
Practical tips I 423

Checklist (Continued)
7. Raise the vehicle jack until it just fits under the jacking point of the vehicle.
8. Make sure that the foot of the jack is resting securely on the ground with its whole sur-face and that its axis of rotation is posi-tioned precisely, i.e. vertically beneath the point of application. For better clarity, extend the line from the point of application to the axis of rotation of the jack foot =>Fig. 300.
9. Position the vehicle jack. At the same time, continue to crank the claw up until it is in po-sition around the vertical rib underneath the vehicle => Fig. 300.
10. Crank the vehicle jack further until the wheel is just clear of the ground.
A WARNING
Incorrect use of the vehicle jack can cause the vehicle to slip off the jack, which can lead to severe Injuries. Please note the following points In order to reduce the risk of Injuries:
• Only use vehicle jacks which have been approved by Volkswagen Commercial Vehi-cles for your vehicle type. Other vehicle jacks could slip out of position-this Includes vehi-cle jacks supplied with other Volkswagen models.
• The ground must be firm and level. Soft ground or surfaces at an Incline under the ve-hicle jack may cause the vehicle to slip off the jack. If necessary use a large, strong board or similar support for the vehicle jack.
Changing a wheel
Fig. 301 removing the wheel bolts with the screw-driver handle.
424 If and when
A WARNING (ConUnued)
• On a hard, slippery surface (such as tiles) use a rubber mat or similar to prevent the ve-hicle jack from slipping.
• Fit the vehicle jack only at the points de-scribed. The vehicle jack claw must grip the vertical rib under the door sill securely =>Fig. 300.
• Never place any part of your body (e.g. an arm or leg) underneath the vehicle If the latter Is only supported by the vehicle jack.
• If you have to work underneath the vehi-cle, use suitable stands to provide extra sup-port for the vehicle.
• Never lift the vehicle when the engine is running, or If the vehicle is tilted to the side or on a gradient
• Never start the engine when the vehicle is raised on a vehicle jack. Engine vibrations can cause the vehicle to fall off the vehicle jack.
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-
r--('n First read and observe the introductory L-J.:.I.J information and safety warnings & on page 420.
Removing the wheel
• Read the checklist =>page 420.
• Loosen the wheel bolts =>page 421.
• Jack up the vehicle =>page 423.
• Using the hexagonal socket in the screwdriver handle =>Fig. 301, unscrew the loosened wheel bolts, remove and place on a clean surface.
• Remove the wheel.
Fitting the spare wheel
Note any specific tyre running direction =>page 367.