Get Fuel and exhaust purification -> Particulate filter Guide for Volkswagen California Van Third Generation (2015-2024)

● Remove any crystallised AdBlue with water and a sponge.

When filling with an AdBlue^®filler nozzle, you may notice an

odour.

Suitable AdBlue^®refill bottles are available from a correspondingly qualified

workshop.

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

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has begun.

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

indicator lamp in the button lights up.

button if the particulate filter is saturated with soot and the

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

Fault in the SCR system

The red warning lamps

light up.

A text message may also be displayed.

There is a fault in the selective catalytic reduction system or the system is not filled with standard-compliant AdBlu^®e.

It is therefore no longer possible to restart the engine.

1. Drive immediately to a suitably qualified workshop without switching off the engine.

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2. Have the system checked.

AdBlue level too low

The red warning lamp lights up.

A text message may also be displayed.

It is not possible to start the engine because the AdBlue level is too low.

1. Park the vehicle.

2. Refill the minimum quantity of AdBlue (→ AdBlue).

SCR system fault

The yellow or white indicator lamps

A text message may also be displayed.

light up.

There is a fault in the selective catalytic reduction system or the system is not filled with standard-compliant AdBlu^®e.

1. Drive immediately to a suitably qualified workshop.

2. Have the system checked.

Or:

During prolonged spells of cold weather with temperatures below -11°C(+13°F), and in extremely adverse conditions,

it is possible that the AdBlue® cannot be defrosted and is not available for the emission control system.

1. Drive the vehicle to a warmer environment with an ambient temperature higher than -11°C(+13°F) within the

stated range, e.g. a garage.

The error message disappears if there is sufficient AdBlue and it has defrosted.

AdBlue level low

The yellow or white indicator lamp lights up.

A text message may also be displayed.

1. Refill AdBlue^®before the displayed remaining range drops to zero (→ AdBlue).

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

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Fuel and exhaust purification -> Particulate filter for Your Volkswagen California Van Third Generation (2015-2024)

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