Get Fuel and emission control -> Particulate filter Guide for Volkswagen Multivan SUV Sixth Generation (2015-2024)

Particulate filter

Fig. 1 Upper section of the centre console: buttons for

particulate filter regeneration (illustration).

Regeneration function

During regeneration of the particulate filter, the accumulated soot inside the filter is burnt to ash so that the filter

does not become clogged. Regeneration takes place at periodic intervals at high temperatures. In order to achieve

the high temperatures in the particulate filter, additional diesel is injected into the engine which is burnt in the diesel

oxidation catalytic converter, thus allowing the regeneration.

Depending on the driver’s driving profile and the load placed on the engine, the amount of diesel fuel injected is

continuously adjusted to maintain a high temperature in the particulate filter during regeneration. During the post-

injection of diesel, small amounts of fuel may enter the oil circuit in the engine. This fuel will evaporate from the

engine oil again during regular driving. If the engine oil temperatures are not high enough due to the driving profile,

or if you drive a lot of short distances, the fuel cannot evaporate from the engine oil and this can cause oil thinning.

An indicator lamp may light up on the instrument cluster display (→ Engine oil).

Automatic regeneration

Automatic regeneration occurs at regular intervals during everyday driving and is not shown on the display.

To assist the regeneration of the particulate filter, avoid making only short journeys.

The radiator fan may run on while the vehicle is moving or when the engine has been switched off.

Regeneration is interrupted automatically when the vehicle is driven in the reserve range and the yellow indicator

lamp lights up.

Manual regeneration (stationary regeneration)

The automatic regeneration of the particulate filter can be delayed via the→ Fig. 1

button, e.g. for driving into

closed halls. You can only postpone regeneration if the indicator lamp in the button lights up. Regeneration is

about to start when the

has begun.

indicator lamp in the button lights up. You can no longer postpone regeneration once it

The

indicator lamp in the button flashes when regeneration has been postponed. Regeneration remains

postponed once you restart the engine. Postponement of regeneration is deactivated when you press the

again.

button

You can only start stationary regeneration using the

button if the particulate filter is saturated with soot and the

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indicator lamp in the button lights up.

To start stationary regeneration:

1. Park the vehicle on a level, non-flammable surface.

2. Manual gearbox: Shift into neutral.

3. Automatic gearbox: Move the selector lever to positionP.

4. Apply the handbrake and take steps to ensure that the vehicle cannot roll away.

5. Press the button

A text message about theparticulate filter is shown on the instrument cluster display.

for around two seconds.

1. Press the button

again for about two seconds to confirm the message.

The text message is confirmed and stationary regeneration is started. The indicator lamp in the button flashes

during stationary regeneration.

Stationary regeneration is stopped automatically in the following situations:

—Manual gearbox: when the clutch pedal is depressed.

—Automatic gearbox: when the selector lever is shifted out ofP.

—If the handbrake is released.

—If the engine is switched off.

—If the

button is pressed again.

NOTICE

If regeneration is not completed, this can thin the oil and cause engine damage.

● Do not switch off the engine unnecessarily while the indicator lamp is active.

● Avoid frequent short journeys and driving cycles at continuously low engine speeds or stationary operation.

Stationary regeneration takes some time. If the stationary time is not sufficient to self-clean the particulate

filter completely, regeneration continues automatically while the vehicle is in motion.

Noises, slight smells and increased engine speeds may occur during

regeneration.

Troubleshooting

Particulate filter clogged with soot

The yellow

indicator lamp lights up.

The particulate filter is clogged with soot and must be regenerated while driving. Stationary regeneration of the

particulate filter is no longer possible.

1. Driving at speeds between 50 – 120 km/h (31 – 75 mph) will help with regeneration.

2. Observe the relevant speed limits and the vehicle’s gear-change indicator.

The indicator lamp goes out automatically when the particulate filter has been regenerated.

1. If the indicator lamp is still lit up after driving for approx. 30 minutes, seek assistance from a suitably qualified

workshop immediately.

The particulate filter may become completely clogged if you ignore the indicator lamp . If the particulate filter is

clogged, a service regeneration must be carried out by a correspondingly qualified workshop.

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Particulate filter clogged

The yellow indicator lamps

light up together.

Self-regeneration of the particulate filter is no longer possible.

1. Contact a suitably qualified workshop immediately to have a service regeneration carried out.

The particulate filter will become damaged and will have to be replaced by a suitably qualified workshop if the

indicator lamps

are ignored.

Emissions-relevant fault

The yellow indicator lamp lights up.

Fault in an emissions-relevant component that can damage the vehicle.

1. Drive to the nearest suitably qualified workshop.

2. Have the engine and exhaust system checked.

Misfiring

The yellow indicator lamp flashes.

Misfiring that can damage the vehicle.

1. Drive to the nearest suitably qualified workshop.

2. Have the engine and exhaust system checked.

WARNING

Any sudden driving manoeuvres that cannot be anticipated by other road users may lead to accidents.

● Ensure that your speed and driving style are always appropriate for the current visibility, weather and road/traffic

conditions.

● Always observe the applicable country-specific traffic regulations.

There may be engine faults and fuel consumption may be higher if the indicator lamps are lit up or

flashing.

Introduction

Observe any country-specific legislation when securing your vehicle in the event of a breakdown.

WARNING

In the event of a sudden driving or braking manoeuvre or accident, a loose vehicle tools container, breakdown set

and spare wheel could be flung though the vehicle and cause severe injuries.

● Always ensure that the vehicle toolkit, breakdown set and spare wheel are always properly secured in the vehicle.

WARNING

Unsuitable or damaged tools in the vehicle toolkit can lead to accidents and injuries.

● Never work with unsuitable or damaged tools from the vehicle toolkit.

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Fuel and emission control -> Particulate filter for Your Volkswagen Multivan SUV Sixth Generation (2015-2024)

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