Ford Diesel Particulate Filter DPF FAQ – Fiesta / Focus / Mondeo

We’ve being doing lots on DPF issues in the last 6 months but for some reason we’ve completely ignored the top selling car manufacturer in the UK. Well that’s all about to change with our mighty Ford DPF frequently asked questions page. We’ll be adding to this page as much as possible so please let us know your experiences, tips and information in the comments below. We hope you find this page helpful so please share, like and comment so this page can help as many of your fellow Ford owners as possible. We’ve added lots of internal links to our website to help give you as much information on DPFs as possible.

Ford DPF Fluid (eolys)

Some Ford models (which models TBC) employ a DPF fluid called eolys. Eolys is a cerium/iron based solution which is designed to assist in DPF regenerative during normal driving conditions. This solution isn’t the silver bullet we all hope for but it has proven to help prevent DPF regeneration during normal driving conditions.

Its contained in a little tank behind the fuel tank any is added to the fuel system automatically. It’s suggest that the tank should be refilled every 37500 miles and if for any reason its empty the car will throw up an error and not attempt any form of DPF regeneration. At presenf we’re unsure if it caused any type of limp home mode or power loss with the eolys error.

Can I refill the Ford DPF Fluid (eolys) myself?

We’ve trawled the Ford owners forums and it’s agreed that you are able to refill the eolys tank yourself. Weather or not this is a good idea is not my call. It’s part of your vehicles service schedule (75k we understand) and we would sway towards just letting them do it. It may add around £100 to your bill but at least you know its the right fluid and it’s done correctly.

Having it done by Ford could be in your favor if you have a complaint or issue within your warranty period, even though DPF filters are not commonly covered by even the most inclusive of vehicle warranties. 

Shhhh! But how can I do it?!

We’ve not had any first hand experience filling the eolys tank but we found a nice man that has and apparently its a dirty ****ard of a job. 

The tank is located just behind the fuel tank and features a filling pipe to the side of the unit. The plug has a cap on the end which can be a little fiddly without the car up in the air. 

If completely empty it will take about 1.8 ltrs to fill. The fluid and refill kit can be obtained from Eurocarparts and will cost you a little short of £50.

You’ll also have to clear the error on the ECU so the system can start using the fluid in the correct manner again. 

We can’t go into detail but I’m sure if you ask in the right place someone will be on hand to guide you through the dirty process. Thanks for Andy.B1971 for posting this information on the http://www.fordownersclub.com forum.

DPF Information / Guides

With that out of the way please find below the details for each Ford Model. Below are some quick links to help you jump down the page without scrolling. There’s quite a wall of text and pictures below.

Quick jump:

Fiesta

The mighty Fiesta. Its been the number one selling car in the UK for longer than we can care to remember. Unfortunately the super-mini has been equipped with a DPF filter since before 2006. Please find below extracts from the manual.

Fiesta 2006 – 2012

From the Manual:

DIESEL PARTICULATE FILTER (DPF)

The DPF forms part of the emissions reduction systems fitted to your vehicle. It filters harmful diesel particulates (soot) from the exhaust gas. Regeneration WARNING Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The DPF regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after DPF regeneration, and after you have switched the engine off. This is a potential fire hazard.

Unlike a normal filter which requires periodic replacement, the DPF has been designed to regenerate, or clean itself to maintain operating efficiency. The regeneration process takes place automatically. However, some driving conditions mean that you may need to support the regeneration process.

If you drive only short distances or your journeys contain frequent stopping and starting, occasional trips with the following conditions could assist the regeneration process:

  • Drive your vehicle, preferably on a main road or motorway, for up to 20 minutes avoiding prolonged idling, but always observing speed limits and road conditions.
  • Do not switch off the ignition.
  • Use a lower gear than normal to maintain a higher engine speed during this journey, where appropriate.

As you will see – Ford are a very unspecific with regards to the exact speed and RPM required. I would aim for about 70MPH in 4th or 5th (6th gear dependent). The revs should be in excess of 2000RPM. Please note that excessive sustained revs (RPM) will not aid the regeneration process, don’t waist your fuel or damage your engine. 


Fiesta 2012 – Present

Thankfully Ford have give owners of the new Ford Fiesta much more to work with. But sadly they do not give the option for a manual regeneration like in the new Focus and 

Here’s what the online manual says

DIESEL PARTICULATE FILTER
The filter forms part of the emissions reduction system on your vehicle. It filters harmful diesel particulates (soot) from the exhaust gas.
Regeneration
 
WARNING
Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after regeneration and after you have switched the engine off. This is a potential fire hazard.

Note:  Avoid running out of fuel.
Note:  During regeneration at low speed or engine idle, you may smell a hot metallic odor and could notice a clicking metallic sound. This is due to the high temperatures reached during regeneration and is normal.
Note:  Changes in the engine or exhaust sound may be heard during the regeneration process.
Note:  Under certain conditions, the engine cooling fan may continue to run for several minutes after you switch your vehicle off. This could happen in low ambient temperatures and independent of the engine coolant temperature, for example short journeys or low coolant temperature.
 
The diesel particulate filter on your vehicle requires periodic regeneration to maintain its correct function. Your vehicle will carry out this process automatically.

If your journeys meet one of the following conditions:

  • You drive only short distances.
  • You frequently switch the ignition on and off.
  • Your journeys contain a high level of acceleration and deceleration.

You must carry out occasional trips with the following conditions to assist the regeneration process:

  • Drive your vehicle in more favorable conditions, which you will find at higher vehicle speeds in normal driving, on a main road or freeway for a minimum of 20 minutes. This drive may include short stops that will not affect the regeneration process.
  • Avoid prolonged idling and always observe speed limits and road conditions.
  • Do not switch the ignition off.
  • Select a suitable gear to ideally maintain engine speed between 1500 and 3000 RPM.

fiesta 2012 present DPF regeneration manual

Focus

Focus 2007 to 2010

This information is much like the Fiesta however their 2007 Focus owners manual seems to be missing the juicy information we need. Our informed guess that is a regeneration would require a speed over 40MPH with revs around 2000 – 2500 RPM.

DIESEL PARTICULATE FILTER
The DPF forms part of the emissions reduction systems fitted to your vehicle. It filters harmful diesel particulates (soot) from the exhaust gas.
Regeneration
 
WARNING
Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The DPF regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after DPF regeneration, and after you have switched the engine off. This is a potential fire hazard.
Caution
Avoid running out of fuel.
Note:  During regeneration at low speed or engine idle, you may smell a hot metallic odour and could notice a clicking metallic sound. This is due to the high temperatures reached during regeneration and is normal.
Note:  After you have switched your engine off the fans may continue to run for a short period of time.
 
Unlike a normal filter which requires periodic replacement, the DPF has been designed to regenerate, or clean itself to maintain operating efficiency. The regeneration process takes place automatically. However, some driving conditions mean that you may need to support the regeneration process.
If you drive only short distances or your journeys contain frequent stopping and starting, where there is increased acceleration and deceleration, occasional trips with the following conditions will assist the regeneration process:
  • Drive your vehicle at a constant speed, preferably on a main road or motorway, for up to 20 minutes.
  • Avoid prolonged idling and always observe speed limits and road conditions.
  • Do not switch off the ignition.
  • Use a lower gear than normal to maintain a higher engine speed during this journey, where appropriate.

Focus 2010 to 2015

We’re not going to recopy all of the information above as google hates duplicate copy but trust us when we say its the same as the older Focus.


 Focus 2015-Present

Wow! Ford went to town with this lot! They have even given owners the option to perform a manual regeneration without getting turned over by a dealer. We know first had that this can be a costly affair having personally spent nearly £1000 for manual regeneration in my 2008 Qashqai. 

We’d like to hear from you if you’ve used this feature – successfully or not! Please please do get in touch.

DIESEL PARTICULATE FILTER

WARNING

Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after regeneration and after you have switched the engine off. This is a potential fire hazard.
 
The normal operating temperature of the exhaust system is very high. Never work around or attempt to repair any part of the exhaust system until it has cooled. Use special care when working around the diesel oxidation catalytic converter or the diesel particulate filter. The diesel oxidation catalytic converter and the diesel particulate filter heat up to very high temperatures after only a short period of engine operation and remain hot after you switch the engine off.

Your vehicle has various emission control components and a diesel particulate filter that enables it to comply with applicable exhaust emission standards. It filters harmful diesel particulates, for example soot from the exhaust gas.

To avoid damaging the diesel particulate filter:

  • Do not crank the engine for more than 10 seconds at a time.
  • Do not push-start or tow-start your vehicle. Use booster cables. 
  • Do not switch the ignition off when your vehicle is moving.
  • Do not ignore warning lamps or information messages regarding exhaust system cleaning and regeneration.
Note:  Resulting component damage may not be covered by the vehicle Warranty.
On-Board Diagnostics System
 
Your vehicle has an on-board diagnostics system that monitors the emission control system. If any of the following warning lamps illuminate, this may indicate that the on-board diagnostics system has detected an emission control system malfunction.
 
Continuing to drive your vehicle may cause reduced power or the engine to stop. Failure to respond to a warning lamp may cause component damage not covered by the vehicle Warranty.  Have your vehicle checked as soon as possible.
 
Diesel Particulate Filter Automatic Regeneration
WARNING
Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after regeneration and after you have switched the engine off. This is a potential fire hazard.
The normal operating temperature of the exhaust system is very high. Never work around or attempt to repair any part of the exhaust system until it has cooled. Use special care when working around the diesel oxidation catalytic converter or the diesel particulate filter. The diesel oxidation catalytic converter and the diesel particulate filter heat up to very high temperatures after only a short period of engine operation and remain hot after you switch the engine off.

The diesel particulate filter on your vehicle requires periodic regeneration to maintain correct operation. The emission control system automatically carries out this process. As soot gathers in the system it begins to restrict the filter. The soot that gathers inside the filter is cleaned in two different ways, passive regeneration and active regeneration. Both methods occur automatically and require no actions from the driver. During automatic regeneration, the system cleans the diesel particulate filter by oxidizing the soot. Cleaning happens during normal engine operating conditions at varying levels depending on driving conditions.
Note:  Depending on vehicle options and instrument cluster type fitted, a warning message may appear with the warning lamp.
Failure to carry out regeneration when required may result in a clogged diesel particulate filter. If the diesel particulate filter fills beyond the regeneration threshold, the system disables the ability to carry out regeneration. This could result in irreversible damage to the diesel particulate filter resulting in component damage which may not be covered by the vehicle Warranty.

Where vehicle use meets any of the following conditions:

  • Driving short distances.
  • Prolonged engine idling.
  • Frequently switching the engine on and off.
  • High levels of acceleration and deceleration.

We recommend you assist the regeneration process by:

  • Avoiding prolonged engine idling.
  • Driving your vehicle in a manner to allow effective cleaning.
Over time diesel particulates build up in the diesel particulate filter that are not removed during the regeneration process. The filter may need to be removed for cleaning at approximately 195,000  km, actual mileage can greatly vary depending on engine and vehicle operating conditions. The diesel particulate filter may require replacing at approximately 400,000  km depending on engine and vehicle operating conditions.
 
Automatic regeneration raises the exhaust temperature to eliminate the soot particles. During cleaning soot particles are converted to harmless gasses. Once cleaned the diesel particulate filter continues to trap harmful diesel particles.
 
If you are driving your vehicle in a manner to allow effective cleaning, the information display shows a message to indicate that automatic regeneration is in progress.
 
If you are not driving your vehicle in a manner to allow effective cleaning, the information display shows a message to suggest that you drive in a manner to allow automatic regeneration.
 
The automatic regeneration process is most effective when you drive at a steady vehicle speed of 48  km/h or above for approximately 20 minutes. The frequency and duration of the regeneration process varies by how you drive your vehicle, the outside air temperature and altitude. Frequency varies between 160  km and 500  km and each regeneration process lasts between 10 and 20 minutes.
 
Note:  You may hear changes in the engine or exhaust sound during the regeneration process.
Note:  You may smell a hot metallic odor or you may hear a clicking metallic sound during the regeneration process at low speed or engine idle. This is due to the high temperatures reached during the regeneration process. This is normal.
 
Diesel Particulate Filter Manual Regeneration
WARNING
Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after regeneration and after you have switched the engine off. This is a potential fire hazard.
The normal operating temperature of the exhaust system is very high. Never work around or attempt to repair any part of the exhaust system until it has cooled. Use special care when working around the diesel oxidation catalytic converter or the diesel particulate filter. The diesel oxidation catalytic converter and the diesel particulate filter heat up to very high temperatures after only a short period of engine operation and remain hot after you switch the engine off.
 

Diesel particulate filter warning lamp.

If the diesel particulate filter is near or at saturation, the warning lamp appears advising you to initiate diesel particulate filter manual regenertion.
Note:  Depending on vehicle options and instrument cluster type fitted, a warning message may appear with the warning lamp.

Before you start manual regeneration, do the following:

  • Park your vehicle outside of any enclosed structure.
  • Make sure the transmission is in park (P) or neutral (N).
  • Make sure the parking brake is on.
  • Park your vehicle a minimum of 3  m from any obstructions and materials that can easily combust or melt, for example, paper, leaves, fuels, plastics and other dry organic material.
  • Make sure there is a minimum of 12  L of fuel in the fuel tank.
  • Check the engine oil level.
  • Check the engine coolant level.
Manual Regeneration
Where vehicle use has significant engine idle operation, frequent vehicle speed less than 40  km/h, or driving short distances where the engine does not fully warm up, manual regeneration allows you to start diesel particulate filter cleaning when the engine is idling.

Use the manual regeneration feature when:

  • You are not able to drive in a manner that allows effective automatic cleaning. See Diesel Particulate Filter Automatic Regeneration.
  • You choose to manually start the regeneration process when the engine is idling.
Note:  You may hear changes in the engine or exhaust sound during the regeneration process.
Note:  You may smell a hot metallic odor or you may hear a clicking metallic sound during the regeneration process at low speed or engine idle. This is due to the high temperatures reached during the regeneration process. This is normal.
Starting Manual Regeneration
You can only start manual regeneration with the engine running at normal operating temperature using the information display.
Note:  Opening the hood is not necessary.
Note:  During the use of manual regeneration, you may observe a light amount of white smoke. This is normal.
Note:  If you press any pedal during manual regeneration the engine turns off. To protect the exhaust system you cannot restart the engine for 10 minutes.
 
If a warning illuminates you may not be able to start manual regeneration.
To start manual regeneration, from the main menu scroll to:
Message Action and Description 
Settings
Press the OK button or the right arrow button. 
Exhaust Filter Full Clean Soon
Press the OK button or the right arrow button. 
Select one of the following:  
Exhaust Filter at Limit Clean Now
Press the OK button or the right arrow button.  Follow the prompts regarding exhaust position as required to start manual regeneration. Make sure you understand each prompt. The information display confirms that regeneration has started and when it is completed. 
Exhaust Filter Overloaded Clean Now
Press the OK button or the right arrow button.  Follow the prompts regarding exhaust position as required to start manual regeneration. Make sure you understand each prompt. The information display confirms that regeneration has started and when it is completed. 
Note:  You cannot use the manual regeneration until the diesel particulate filter load percentage has reached 100 percent. The diesel particulate filter load percentage fluctuates when driving due to automatic regeneration.
 
When you start manual regeneration the engine speed rises to approximately 2000–2500 rpm and the cooling fan speed increases. A change in engine noise due to the cooling fan and engine speed increase may be heard during the regeneration process.
Depending on the amount of soot collected by the diesel particulate filter, the regeneration process varies depending on the outside air temperature and altitude. Manual regeneration may last up to 40 minutes.
When manual regeneration is complete the cooling fan and engine speed return to normal idling. The exhaust system remains very hot for several minutes after regeneration is complete. Do not reposition the vehicle over dry leaves, dry grass or other combustible materials until the exhaust system has had sufficient time to cool.
 
Interrupt or Cancel Manual Regeneration
You can interrupt or cancel manual regeneration by pressing any pedal or by switching the engine off.
Note:  To protect the exhaust system you cannot restart the engine for 10 minutes.
Depending on the amount of time allowed for manual regeneration to operate, soot may not have had sufficient time to be eliminated. The exhaust system may still be very hot for several minutes after regeneration.
If you switch the engine off during manual regeneration, turbo charger flutter occurs. This is a consequence of switching a diesel engine off during turbo charger boost operation, which is normal.
Manual Regeneration with Automatic Regeneration Control
Where vehicle use has significant engine idle operation, frequent vehicle speed less than 40  km/h, or driving short distances where the engine does not fully warm up, automatic regeneration may not sufficiently clean the diesel particulate filter. You can switch automatic regeneration off until you can drive your vehicle in a manner to allow effective cleaning, for example at a steady vehicle speed of 48  km/h or above for approximately 20 minutes. You can then switch automatic regeneration back on to clean the diesel particulate filter.
To switch the automatic regeneration control on and off, from the main menu scroll to:
Message Action and Description 
Information
Press the OK button or the right arrow button. 
Driver Assist
Press the OK button or the right arrow button. 
Auto Exhaust Cleaning Off
Check the box to switch automatic regeneration off.  Uncheck the box to switch automatic regeneration on. 

Mondeo

Mondeo 2007 – 2015

The process from the other Mondeo is exactly the same as both the other Focus and Fiesta guidance. Here’s the pages from the manual.


Mondeo 2015 – Present.

Strangely, unlike the Focus the Mondeo manual suggests that it does not have a way of performing a manual DPF regeneration process. Considering the Mondeo is Ford’s flagship model it’s missing such a handy features that it’s little brother has – or it could be that they have simply missed it from the manual. We’ll get in touch with Ford and ask them for confirmation. Until we can confirm this please see below from the Mondeo 2015 – present manual.

DIESEL PARTICULATE FILTER

The filter forms part of the emissions reduction system on your vehicle. It filters harmful diesel particulates (soot) from the exhaust gas.
Regeneration
 
WARNING
 Do not park or idle your vehicle over dry leaves, dry grass or other combustible materials. The regeneration process creates very high exhaust gas temperatures and the exhaust will radiate a considerable amount of heat during and after regeneration and after you have switched the engine off. This is a potential fire hazard.

Note:  Avoid running out of fuel.
Note:  During regeneration at low speed or engine idle, you may smell a hot metallic odor and could notice a clicking metallic sound. This is due to the high temperatures reached during regeneration and is normal.
Note:  Changes in the engine or exhaust sound may be heard during the regeneration process.
Note:  Under certain conditions, the engine cooling fan may continue to run for several minutes after you switch your vehicle off. This could happen in low ambient temperatures and independent of the engine coolant temperature, for example short journeys or low coolant temperature.
The diesel particulate filter on your vehicle requires periodic regeneration to maintain its correct function. Your vehicle will carry out this process automatically.

If your journeys meet one of the following conditions:

  • You drive only short distances.
  • You frequently switch the ignition on and off.
  • Your journeys contain a high level of acceleration and deceleration.

You must carry out occasional trips with the following conditions to assist the regeneration process:

  • Drive your vehicle in more favorable conditions, which you will find at higher vehicle speeds in normal driving, on a main road or freeway for a minimum of 20 minutes. This drive may include short stops that will not affect the regeneration process.
  • Avoid prolonged idling and always observe speed limits and road conditions.
  • Do not switch the ignition off.

Other Models

We’ve not been doing too much digging about the DPF systems, issues and regeneration processes for other DPF equipped Fords.  However we suspect that with Ford’s common engine platforms they will also make use of DPF Fluid (eolys) additive and have similar regeneration conditions and requirements.

Please seek advice from your handbook or contact your Ford dealer.

We’ll be adding to this article over time  so if you have another Ford Transit, Kuga, Ka etc.. and have any experiences (good or bad) with your DPF then please let us know in the comments. 

Lost your manual?

If you’ve lost your Ford manual then Ford have helpfully provided a hand page which you can download them from. Click here for the Ford Online Manuals

Common Ford DPF issues

Unlike VAG cars, Fords don’t seem to have the chronic DPF sensor issues plaguing it unlike VW, Skoda, Audi and Seat diesel models. Much of our investigation has shown that Ford’s DPF systems are on the whole pretty good. Unfortunately you still won’t be able to escape DPF issues for the entire cars lifetime as the ASH produced from diesel engines can not be burnt off during a DPF regeneration. 

Unlike other models of car Ford seems to get off quite lightly with regards to premature DPF failures. We suspect that this has something to do with the eolys fluid in use by certain models. We have also seen developments in DPF technologies in newer cars, helping DPF regenerations in less than ideal conditions and driving habits.

DPF Cleaning Additives

A Manual DPF regeneration at a Ford or independent garage will cost you upwards of £200. We suggest that before you hand over the keys try out one of the many DPF cleaning additives available. These additives are added to the fuel tank and work by helping reduce the the temperature which the soot blocking your DPF burns off. You’ll still need to take the car for a run and meet certain criteria (as above) but it just might save you over £200 in unneeded repair bills. We appreciate that the Ford DPF fluid (eolys) is designed to do such a job but for the sake of a tenner its well worth a shot before you hand over your hard earned cash for a manual DPF regeneration or even DPF replacement.

You can find out more about these additives on our on our DPF cleaning page.

Halfords offer DPF cleaning services but please save your money and buy some DPF cleaning fluid yourself, its a total rip off. More here about Halfords DPF cleaning services.

Amazon stock a huge selection of DPF cleaning fluids – below are some very popular ones available.

DPF Removal

If you’ve found this page then no doubt you’ll have also read about the DPF removal services offered by countless garages and mobile mechanics. This services involves gutting the DPF and “remapping” the ECU to remove the DPF system from its brain. We’ve already covered why not to remove the DPF in this article about the DPF MOT failure but in short here’s why we stongly suggest you shouldn’t do it.

  • It IS illegal to modify your vehicle in a way that impacts the emissions. Many DPF removal services cover their back by stating its for “off road” use only.
  • Without a DPF your car WILL fail its MOT. At present its only a visual check but plans are in motion to have the MOT changed to help detect this.
  • Your insurance might be void. Lets say you have an accident and you plough into another car writing things off and causing injuries to other parties. When you car is checked by the inurance company it’s noted that your DPF has been remove. Bye bye insurance and possible legal action headed your way.

We need your help!

We’re always looking to add more information to all our pages, so if we’ve left something out, you have a suggestion or correction then please leave a comment below.

Helpful Articles

You might also find the following articles below of use

** Content from the manuals as per this page were taken from the Ford Owners manual pages. It’s their content as could be liable to change at any time. 

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About

Karl is the editor and owner of this glorious website. He currently writes for numerous environmental websites, producing content for the greater good.His experience in graphic design, Wordpress and all things automotive have helped sculpt Hypermiler.co.uk into its current form from very humble beginnings.He has numerous IT qualifications, a red belt in Taekwondo and likes craft Ales.Get in touch via our Contact Page

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