Land Rover Discovery Owners & Service Manuals

Land Rover Discovery: Exhaust filter

Diesel vehicles equipped with a Diesel Particulate Filter (DPF) have more efficient emissions control. The particles in the exhaust gases are collected in the exhaust filter during normal driving.

Cleaning of the exhaust filter, also known as regeneration, occurs automatically approximately every 300-900 km depending on driving conditions, and requires the engine to reach normal operating temperature.

This self-cleaning takes place when the vehicle is driven steadily at speeds between 60 km/h to 112 km/h (40 mph to 70 mph). This process normally takes 10- 20 minutes. It is possible that the selfcleaning will occur at lower vehicle speeds, but the process may take a little longer at a 50 km/h (30 mph) average speed.

Exhaust filter self-cleaning

Some driving conditions (e.g., frequently driving short distances, in slow-moving traffic, or in cold weather) may not provide sufficient opportunity to begin the exhaust filter self-cleaning automatically. When this occurs, a warning icon is displayed in the Message centre, depending on status, as follows:

  • Amber: Exhaust filter self-cleaning is required. Driving above 60 km/h (40 mph) for 20 minutes should clean the filter.

Note: Failure to follow the above driving approach to enable filter self-cleaning, may result in reduced vehicle performance. The amber exhaust filter icon will eventually be replaced by a red exhaust filter icon, and the filter may need to be replaced.

  • Red: The exhaust filter is full; contact a Retailer/Authorised Repairer as soon as possible.

Note: A small increase in fuel consumption may be noticed temporarily during exhaust filter self-cleaning.

Note: If diesel fuel with high sulphur content is used regularly, the exhaust may emit a cloud of smoke at the start of the self-cleaning process. This is the sulphur deposit being burnt off and is no cause for concern. If possible, only use low sulphur diesel fuel.

ANTI-THEFT SYSTEM

No modifications or additions should be made to the Anti-theft system. Such changes could cause the system to malfunction.

AIRBAG SYSTEM

The components that make up the airbag system are sensitive to electrical or physical interference, either of which could easily damage the system and cause inadvertent operation or a malfunction of the airbag module.

To prevent malfunction of the airbag system, always consult your Retailer/ Authorised Repairer before fitting any of the following:

  • Electronic equipment such as a mobile phone, 2-way radio, or in-car entertainment system.
  • Accessories attached to the front of the vehicle.
  • Any modification to the front of the vehicle.
  • Any modification involving the removal or repair of any wiring or component in the vicinity of any of the airbag system components, including the steering wheel, steering column, instrument or fascia panels.
  • Any modification to the fascia panels or steering wheel.

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