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Old 08-09-2015, 08:27 AM   #1
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Regen switch

Stuck on the side of I-85. Anyone know where our regen switch is at? 2011 berk 390 here. Thanks.

-david
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Old 08-09-2015, 08:36 AM   #2
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There is no physical switch for regen. It is controlled by the engines computer. It is automatically actuated when needed. What makes you think that you are stuck because of needing a regen?
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Old 08-09-2015, 09:11 AM   #3
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My 2008 340hp does not have one. On my buddies 2008 350 hp it is under the dash on the right hand side of the steering column.
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Old 08-09-2015, 09:32 AM   #4
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Have you tried calling the Freightliner help line?
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Old 08-09-2015, 09:50 AM   #5
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Tmmar,

Called a 1-800 number I found online, but couldn't get through to anyone. Called tech at cummins but no luck...Can you please provide number?

Thanks,
David
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Old 08-09-2015, 10:17 AM   #6
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Regen switch

1-800-ftl-help or 1-800-385-4357
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Old 08-09-2015, 10:19 AM   #7
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Can anyone tell me what this Regen Switch is?
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Old 08-09-2015, 11:10 AM   #8
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Some background first...Diesel Particulate filters (DPF) or 'traps' do just that, they catch bits of soot in the exhaust. As with any filter they have to be emptied regularly to maintain performance. For a DPF this process is called 'regeneration' – the collected soot is burnt off at high temperature to leave only a tiny ash residue.

If a regeneration is needed, you'll start to see temperature lights and the DPF indicator lights on your dash. The regeneration can sometimes be accomplished by driving at a higher rpm for 20 mins to burn the soot.

With that being said, a regen switch is used when you require a parked regeneration. There is a process outlined in the owners manual (in mine it's page 4.2). Takes between 20-50 minutes and will burn off excess soot. Basically, there are sensors in the exhaust and once there is so much soot it needs to be burned off.

In my case I noticed a temperature light, followed by the DPF light and shortly after that check engine light. Started loosing all power to the coach. My 2011 390 bh doesn't have a switch and it requires a cummins qualified tech to you their insight software to hook into your diagnostics to initiate a parked regeneration.

Above are my findings from the dilemma so far today. Hope this helps people in the future. I plan to stop by freight liner or cummins and ask to have a regen switch installed. Still sitting on the side of the road after 4 hours waiting on tech. Could always be worse though. Should be a ~1 hr process of we had a switch.

Just my two cents...

Cheers,
David
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Old 08-09-2015, 11:35 AM   #9
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More info: http://www.mid-pac.com/documents/DPF_EN.pdf
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Old 08-09-2015, 12:48 PM   #10
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Here is what the symbol looks like on the dash. Click image for larger version

Name:	ImageUploadedByForest River Forums1439142471.308695.jpg
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Size:	94.8 KB
ID:	85223
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Old 08-09-2015, 12:55 PM   #11
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Originally Posted by trekdave42 View Post
Here is what the symbol looks like on the dash. Attachment 85223
did you just pull over or lose power because, that looks like hot exhaust light, if engine didn't lose power run it, they come on on semis after long hill and go off when cool
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Old 08-09-2015, 01:05 PM   #12
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David
Maybe what I learned at Camp Freightliner will help. I wish I could have gotten this to you earlier. See the attachment. Instead of a switch, there is a connector down at the bottom of the steering column, that acts as the switch.

Hope this helps

Whoops, FR Forum is keeping me from attaching the file. Look for the connector and disconnect it. I will send the file later.
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Old 08-09-2015, 01:17 PM   #13
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David

Here is a slimmed down version, page 1
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Old 08-09-2015, 01:18 PM   #14
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Here is a slimmed down version, page 2
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Old 08-09-2015, 01:19 PM   #15
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David
Here is a slimmed down version, page 3
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Old 08-09-2015, 01:32 PM   #16
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You should be able to drive at highway speed. After an hour or so the regen will be complete. Did you lose power?
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Old 08-09-2015, 02:56 PM   #17
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There are four stages of DPF warnings, namely:

1. DPF Lamp ON, manual states 2-6 hours of driving, but Freightliner instructor say 1:15 hrs. driving. Action: Parked Regeneration.

2. DPF Lamp Flashing; manual states 1-2 hrs driving. Action: Parked Regeneration

3. DPF Lamp Flashing and Check Engine Light; manual states regeneration immediately.

4. DPF Lamp Flashing, Check Engine Light on and Red Stop Engine Light On. Manual states "Stop Engine Immediately and take to authorized Cummins repair location". At this point, the after treatment system and engine could be damaged,.

You do not ever want to get to a Red Stop Engine Light!
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Old 08-09-2015, 03:04 PM   #18
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Ok I got it, so when does this light typically come on? I mean how often does it require a regen?
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Old 08-09-2015, 03:14 PM   #19
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Ok I got it, so when does this light typically come on? I mean how often does it require a regen?
Depends on engine exhaust temps. The faster you drive with load the hotter the exhaust system runs. If predominantly slow local roads the more regen cycles are required.
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Old 08-09-2015, 03:29 PM   #20
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I drive by RPM's not speed. 55-60 is to slow on RPM'S I drive at about 1800-2100 use the transmission for better mpg. Works for me.


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