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Old 06-19-2018, 01:17 PM   #1
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Help......

Wife an I had a 2004 Nissan titan. When towing we used the tow mode and no overdrive.
Just bought an 2018 Nissan titan diesel. No where in the info books that came with the truck does it say anything other then use tow mode.
So...
Do I use tow mode and no overdrive like my old gas one, or tow mode AND overdrive?
Ps. 1st time diesel guy.
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Old 06-19-2018, 01:20 PM   #2
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Tow mode typically won't allow the engine to shift into OD. It'll also change the shift points so you get optimal torque and allow engine braking (if equipped).

I would use it when towing and that's it.
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Old 06-19-2018, 01:26 PM   #3
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Use tow mode and let it shift the transmission itself, don’t manually shift it or lock it out of OD unless you find it hunting for gears.
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Old 06-19-2018, 01:47 PM   #4
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Originally Posted by 007matman View Post
Tow mode typically won't allow the engine to shift into OD. It'll also change the shift points so you get optimal torque and allow engine braking (if equipped).

I would use it when towing and that's it.
It’s near impossible to state what is typical regarding tow/haul mode. It depends on the make, model, year of the tow vehicle. My 2014 has 6 forward speeds. The top 2 are OD. Tow/haul mode locks out neither of them. BTW, it’s the transmission not the engine that shifts into overdrive(s). Do what’s suggested above —- use tow/haul if you are towing or hauling and let the transmission control module choose its own gears.
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Old 06-19-2018, 01:49 PM   #5
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It’s near impossible to state what is typical regarding tow/haul mode. It depends on the make, model, year of the tow vehicle. My 2014 has 6 forward speeds. The top 2 are OD. Tow/haul mode locks out neither of them. BTW, it’s the transmission not the engine that shifts into overdrive(s). Do what’s suggested above —- use tow/haul if you are towing or hauling and let the transmission control module choose its own gears.
Mr Dan.. we're saying the same thing.
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Old 06-19-2018, 06:24 PM   #6
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This does not answer the question. My 2005 Nissan Titan, that I previously that I owned, would shift into overdrive using tow mode. In the mountains it was always shifting and transmission temperature would rise if you did not prevent from going into overdrive.
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Old 06-19-2018, 06:46 PM   #7
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Use tow mode and let it shift the transmission itself, don’t manually shift it or lock it out of OD unless you find it hunting for gears.
X2 - this is your answer. Key to it is if you find it shifting out and back to OD a lot then drop it down out of OD manually until the situation causing it to hunt (i.e. Hills) passes. Simple as that.
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Old 06-19-2018, 06:53 PM   #8
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This does not answer the question. My 2005 Nissan Titan, that I previously that I owned, would shift into overdrive using tow mode. In the mountains it was always shifting and transmission temperature would rise if you did not prevent from going into overdrive.


I did answer your question and even addressed hunting for gears.
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Old 06-19-2018, 06:55 PM   #9
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Do you really need Tow mode at all? What are you towing?

You can search this forum for Tow mode threads and see those comments. I've never found the need to use it as my vehicles easily handle the load and shift nicely. Tow mode causes higher acceleration between gears and is unnecessary unless I was really at the limit of tow capacity.
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Old 06-19-2018, 07:50 PM   #10
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I did a simple search and it sounds like the Nissan tow mode still allows shifting into OD.

Honestly, if it was me I'd see what works best for you. tranny temp is something you'll.want to watch nothing will kill a tranny faster than heat.

If you don't have a guage then I'd recommend a simple OBD port reader and the Torque app. That'll give you actual numbers to.work with.
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Old 06-19-2018, 07:58 PM   #11
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I can’t answer specifically to the diesel but with my 2017 xd gas if I don’t lock it into 6th gear the rpm’s run way to low for my liking and it really hunts for gears. When in rolling hills I will lock it into 5th. I have not noticed any difference in fuel mileage regardless of what gear I have locked out. You are correct that the manual doesn’t address this.
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Old 06-19-2018, 08:09 PM   #12
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I have a 2016 Titan XD diesel, use the tow mode. Shifts into OD, downshifts when braking and works splendidly with cruise control.
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Old 06-20-2018, 10:38 AM   #13
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X2 - this is your answer. Key to it is if you find it shifting out and back to OD a lot then drop it down out of OD manually until the situation causing it to hunt (i.e. Hills) passes. Simple as that.
Yup, exactly what we do. On the Ram HD you have tow/haul and you can also lockout higher gears as needed. With our TT, I know it will likely downshift (and sometimes a bit harsh) while going up longer hills, so I'll lockout 6th ahead of time and keep it locked out in hilly areas. Puts it right in the powerband for the speed we travel at.

I think the 'no OD while towing' comes from a couple decades ago, doesn't necessarily apply anymore.
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