DIESEL PARTICULATE FILTERS EXPLAINED
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JAGUAR'S DIESEL PARTICULATE FILTER.
Like every component in a Jaguar Twin Turbo Diesel S-TYPE, XJ or new XF the Diesel Particulate Filter is designed to help make your Jaguar experience truly rewarding.
WHAT IS A DIESEL PARTICULATE FILTER?
The Diesel Particulate Filter (DPF) fitted to S-TYPE, XJ and XF diesel models in an exhaust-mounted after treatment device that minimises black smoke and soot being emitted from a vehicle's tail pipe. It is designed to filter out much of the smoke and soot from your car's emissions exhaust system in order to reduce pollution and help protect the environment.
WHY DO I NEED ONE?
It is necessary that all vehicle manufacturers meet legislative requirements for the reduction of particulates under emission regulations. The fitment of a diesel particulate filter will remove smoke and soot emissions and reduce particulates emitted from a vehicle's exhaust.
WHAT IS REGENERATION?
When the engine is at its normal operating temperature and driven at normal speeds (40mph or more), the coot particles collected by the filter are burned away automatically. This process is called regeneration. if you make a lot of short journeys, with a lot of starting and stopping, and without driving above 40mph for over 20 minutes at a time, the DPF may not reach the correct temperature to automatically regenerate. The accumulation of soot can cause a warning message to be displayed. Whatever warning appears, you should follow the instructions in your handbook.
CAN I REGENERATE THE DPF WHEN THE AMBER WARNING LIGHT IS DISPLAYED?
Yes, to start regeneration of the DPF, drive the vehicle, preferably on a main road or motorway at 40mph or more, until the engine temperature reaches its normal operating temperature.
The vehicle should be driven for approximately a further 20 minutes or more, preferably at a speed of 40mph, but always observing speed limits and road conditions.
Successful regenerations of the DPF are indicated by the warning message and amber priority indicator light being extinguished from the message centre.
WHAT IF I'M STUCK IN TRAFFIC AND UNABLE TO CARRY OUT REGENERATION?
Don't worry, just perform regeneration as soon as you get the opportunity.
SHOULD MY CAR GO INTO RESTRICTED PERFORMANCE, WHAT DOES THIS MEAN? WHERE CAN I GO AND WHAT CAN I DO?
Restricted performance is a standard feature across the industry. t is designed to allow drivers experiencing engine management issues to still drive their cars until they can be booked in to a Jaguar Authorised repairer for investigation. In the case of this concern, drivers are most likely to be able to drive their cars to their desired destination under restricted performance.
WHY MIGHT I NOTICE A CLICKING SOUND AND UNUSUAL ODOUR?
This happens as part of the normal DPF cooling process. The DPF must reach a high temperature to ensure complete soot combustion and the clicking sound comes from the metal contracting as it cools down. Any odour you may smell is consistent with diesel fumes once the soot has been removed. This is similar to the way petrol engines emit a sulphur smell while the catalysts are in operation.
THERE ARE A NUMBER OF COMPANIES THAT OFFER PERFORMANCE AND POWER UPGRADES. CAN I USE THESE ON MY CAR?
Jaguar Cars do not recommend taking the vehicle away from original manufacturer's specification. Performance upgrades have not been tested or validated for use on Jaguar vehicles. They will seriously affect the correct operation of the DPF system, and will invalidate the manufacturer's warranty on components affected by the installation of any performance upgrade.
If you have any more questions about the Diesel Particulate Filter in your Jaguar, just contact Westover Jaguar.
