Dodge "light load" button

[Ryan_V]

Well, my new (to me) truck is here!! '08 Dodge Ram 2500 cummins diesel. This is the first of what will be many questions from a new diesel owner!! There is a "light load" button under the radio by the jake brake. What is it for?? I didn't see anything in the manual yet. Is it like the "tow/haul" only for smaller trailers?? If so, what weight do I use that one vs the tow/haul??

Also, my cousin (previous owner) put cold air intake and 5" exhaust on her. Does the computer need to be "tweeked" to get better mileage, or just let it be??

Anything else I should have done to it being it's from Arizona and will be MN truck the rest of it's life??

Thanks guys!!! like I said, this is my first diesel, so I'm sure i'll have many questions!!

[Ufatz]

This is an easy one. Look in glove compartment for owners manual. If not there, get to Dodge and get one. Amazing the stuff you might find in there about ALL aspects of your new truck.

And once a diesel man ALWAYS a diesel man!! Ha!

[Macgyver55]

I believe what its for, is if you want to lower air pressure in the rear tires when not loaded (smoother ride) you can adjust the rear air pressure down, which will in turn activate the Tire pressure monitor system light on your dash. The light load button resets this light and adjust it for the lower 45 psi air in the rear tires only. The front tires should stay at 65 since they are loaded all the time with the engine.

I'm not positive about this but its how it was explained to me by a buddy.

[deadeye]

Not sure about the light load button honestly. Maybe it tweaks a few parameters in the computer for shift firmness and possibly power/fuel economy? I could underdtand the tire pressure setting too.

For the exhaust and intake you can enjoy those as they sit or get a diablosport predator/ hypertech, ect and have it really wake up in power. Most of those have economy settings too so that would definitly help. The intake/exhaust and computer compliment each other nicely so if you got the money you will like it.

Since your going to be the first one exposing it to salt you might want to get a few good coats of wax on there before winter too. Maybe see about getting it undercoated and rustproofed. Its so much easier to start with a clean slate than it is trying to get rid of rust so keep that baby clean!!

[jeffreyd]

it is for the tpms system on the tires. if you have a tire that is lower than spec, you can push this button to turn off the light and alarm. if you do a search online for the title that you wrote, you will get a ton of info. ufatz noted that you should look in the glove compt for the manual however i did note in your post that you have referred to the manual and could not locate anything. you might look under the tire monitoring system to see if it discussed there.

[Valv]

The best programmer for Dodge Cummins is the Smarty, price around $ 600. If you just need a little better fuel economy I wouldn't go too crazy on these, it will take many miles before you come up even with the cost. Whatever you do to increase performance, remember your transmission will take the consequences, be careful.