Volvo DPF / SCR problems

Where is the fuse at since I tried looking for mine on the dash fuse box but couldn't locate it

 

DEF heater line relay/fuse on my truck is in the fuse box in the engine compartment above the steering shaft. I think it's the same type of relay used for the trailer stop/brake lights. I would swap those 2 relays and check your brake lights to see if the relay still works. Check to see if you've got any fuses attached to the wiring coming from the batteries.

 

The fuse is in the pdm module by steering shaft under the hood.

 

Hello sir,
I’m preaproved for a new truck but I found a 2010 Volvo Vnl 780 with only 200,000mi on it. Now if I get the used one With very low monthly payments but I do not know anything about that particular year trucks. Currently I’m driving an 06 Volvo vnl630 over a million miles and have to upgrade or go out of business because of number of repairs which have been very expensive. Could you please give me some advice
I thank you in advance for taking your time to read my post and highly appreciate if you respond

 

Is it a DEF or EGR engine?
2010 was the year they changed.

 

Just dpf filter with egr no def fluid.

 

How many hours on the engine?
Miles only tell a limited story.

 

To be honest I don’t know the engine hrs

 

I just called to find out they already sold it. Thanks for your help anyways

 

I see this is an older thread, but what planet on you living on that after 2010 a Volvo with Volvo power only has a I-shift?