JEM  LEXUS DPF

020 8226 4282

COVID-19 (Coronavirus) Business Update


Given the scale and impact that Coronavirus (COVID-19) has had on our daily lives, as well as the new advice and regulations issued by the government, JEM has made the decision to temporarily close our workshop at 7pm on Thursday 9th April.

This Board of Directors made this decision to ensure the continued safety of our staff, customers and local communities.

This closure will be in effect until further notice and we will continue to provide updates as and when things develop following further government announcements.

We will have members of staff working remotely to try and deal with any queries, concerns or general enquiries and they will endeavour to reply to you as quickly as possible. Please email service@jemuk.co.uk

This is an extremely concerning time for everyone and we thank you all in advance for your patience and understanding during this period. We want to play our part in the national effort to reduce the further spread of the virus and we really do appreciate the support and understanding of our loyal and valued customers during these challenging times

As the situation develops, the safety of our staff and customers will remain of the highest importance and we will continue to inform you with the latest updates through our websites.

These are unprecedented times and we apologise for any inconvenience, we will be back to serve you again as soon as it is safe to do so.

In the meantime - please do keep safe.


Frequently Asked Questions


I have a Service booked, what should I do?


Current bookings will be rescheduled. These appointments may be subsequently modified, depending on Government guidelines. We will be in contact as soon as we resume normal working hours.


My MOT is due, what should I do?


Vehicle owners will be granted a 6-month exemption from 30th March for MOT testing, enabling them to continue to travel to work where this is absolutely necessary, or shop for necessities. For more information please visit this link.


Can I make an appointment for a service?


At this present time we are unable to schedule any appointments until we return to normal working hours. Please keep an eye on our websites which will be updated as the situation develops..

DIESEL PARTICULATE FILTER FAULTS

A diesel particulate filter (DPF) is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine.

Using information supplied by the differential pressure sensor the vehicle determines that the DPF is becoming full of soot and initiates the regeneration by injecting diesel post combustion. The diesel enters the exhaust and increases the temperature inside the DPF thus burning off the soot.

If a vehicle fails to regenerate the diesel particulate filter will become blocked and the engine management or DPF warning light will illuminate. The failure to regenerate can be caused by the style of driving or type of journeys covered not allowing the vehicle to reach the parameters required for regeneration or due to the failure of a sensor or component associated with the regeneration process.

It is paramount that the reason the original diesel particulate filter became blocked is correctly diagnosed and rectified prior to installation of a replacement unit. Once this has been done and the new unit fitted the vehicle must be set up correctly with compatible diagnostic equipment. Failure to set up the vehicle correctly after installation will almost certainly lead to the replacement DPF becoming blocked.

At JEM we have many years of experience working with vehicles with DPF problems and we have dealer level diagnostic equipment for almost every car on the road. We will correctly diagnose the cause of your DPF issue and supply you with a repair quotation. We have specialist equipment whereby we can either clean your existing DPF in situ or if it is too heavily blocked we can remove it from the vehicle and ultrasonically clean it prior to refitting and testing. If the DPF is damaged or completely plugged and therefore cannot be cleaned or cleaning is not economically viable we can replace it with a new part. We hold stock of all the fastest moving DPF’s in our parts department.

We do not remove diesel particulate filters and remap the ECU of vehicles as this is not legal. According to the DPF guidance sheet on the .GOV website it is an offence to remove the DPF filter. Below is a copy of the relevant paragraph.

It is an offence under the Road vehicles (Construction and Use) Regulations (Regulation 61a(3))1 to use a vehicle which has been modified in such a way that it no longer complies with the air pollutant emissions standards it was designed to meet. Removal of a DPF will almost invariably contravene these requirements, making the vehicle illegal for road use.