Use the Tow/Haul Button?
#1
05-08-2015, 10:58 AM
Join Date: Nov 2012
Location: North Texas
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Use the Tow/Haul Button?
I've been towing my 5th wheel (about 11k pounds) for 5 months now, and my 06' F350 Dually seems to pull and cruise better in 'normal' mode. When I use the tow/haul button it shifts a lot more and runs at higher temps.
What are pros and cons for the tranny and engine?
What are pros and cons for the tranny and engine?
#2
05-08-2015, 01:07 PM
#3
05-08-2015, 06:58 PM
Freshman User
#4
05-08-2015, 07:26 PM
#5
05-09-2015, 06:41 AM
#7
05-09-2015, 10:54 AM
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Join Date: Apr 2015
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I use the tow haul for first starting out then only when going up a long climb or down a long decent. The engine braking helps a lot on long decent's even on the gas engines. The only thing that really helps transmission life is keeping it cool. I flush my transmissions every 30k to 50k miles depending on use. On these SD you can even change the filter fairly easily on the transmission. I personally like the BG transmission flush system used by most good auto shops.
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#8
05-11-2015, 06:22 PM
Senior User
I don't use it towing my 8000lb 5th wheel. I have a 6.2 and 4:30 axle which TH will wind out like crazy with no relevant effect on the acceleration like the truck was pulling twice the load. The truck pulls the load just fine without using it. I use manual mode to help control downhill speeds
#9
05-11-2015, 10:25 PM
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#10
05-12-2015, 04:12 AM
Lead Driver
#11
05-13-2015, 09:49 AM
Tow/Haul info for 6.0L w/ 5R110W
Tow/Haul
The tow/haul feature was designed to assist the vehicle when towing a trailer or a heavy load. All transmission gear ranges, including all 5 forward gears, are available when using the tow/haul feature.The tow/haul function is activated and deactivated through a switch located on the end of the selector lever. The indicator light that is located in the Instrument Cluster (IC) will illuminate when the tow/haul is activated and will go off when deactivated.With the tow/haul activated, the transmission will have the following features:
•Shifts will occur at higher vehicle speeds for a given Accelerator Pedal Position (APP) to improve vehicle acceleration, reduce excessive shifting and increase the coast braking capability.
•The torque converter will lock up at lower vehicle speeds than normal with a given APP to improve transmission cooling and efficiency.
•Upshifts are temporarily delayed while decreasing APP during hill cresting to reduce excessive transmission shifting and to prepare for a possible grade braking downshift event.
•Engine braking is provided in all forward gears without the requirement of moving the selector lever.
•Manual 1, 2 or 3 will still be available.
•Grade braking downshift feature provides increased coast braking automatically to assist driver in maintaining desired speed while descending a grade.This reduces duty cycle on the brake system and increases brake pad longevity.
•Grade braking downshifts are automatically commanded when:—positive vehicle acceleration is sensed (natural acceleration from grade descent).—a near zero APP is obtained.—a minimum amount of time has expired since the last grade braking downshift.
•Grade braking downshift mode is immediately exited should the tow/haul mode be deactivated or if the accelerator pedal is pressed beyond a minimum threshold.
The tow/haul feature was designed to assist the vehicle when towing a trailer or a heavy load. All transmission gear ranges, including all 5 forward gears, are available when using the tow/haul feature.The tow/haul function is activated and deactivated through a switch located on the end of the selector lever. The indicator light that is located in the Instrument Cluster (IC) will illuminate when the tow/haul is activated and will go off when deactivated.With the tow/haul activated, the transmission will have the following features:
•Shifts will occur at higher vehicle speeds for a given Accelerator Pedal Position (APP) to improve vehicle acceleration, reduce excessive shifting and increase the coast braking capability.
•The torque converter will lock up at lower vehicle speeds than normal with a given APP to improve transmission cooling and efficiency.
•Upshifts are temporarily delayed while decreasing APP during hill cresting to reduce excessive transmission shifting and to prepare for a possible grade braking downshift event.
•Engine braking is provided in all forward gears without the requirement of moving the selector lever.
•Manual 1, 2 or 3 will still be available.
•Grade braking downshift feature provides increased coast braking automatically to assist driver in maintaining desired speed while descending a grade.This reduces duty cycle on the brake system and increases brake pad longevity.
•Grade braking downshifts are automatically commanded when:—positive vehicle acceleration is sensed (natural acceleration from grade descent).—a near zero APP is obtained.—a minimum amount of time has expired since the last grade braking downshift.
•Grade braking downshift mode is immediately exited should the tow/haul mode be deactivated or if the accelerator pedal is pressed beyond a minimum threshold.
#14
05-19-2015, 01:51 PM
#15
06-10-2015, 01:01 AM
Senior User
If you have a Pyro on a turbo diesel, watch the difference when it is going up a hill and there's a good load on the engine. Compare it with tow haul on vs off. Mine is almost 200 degrees lower in tow haul mode. Also makes it nice to use the engine and
Transmission to assist with braking going down hill. It doesn't make much difference until there's a noticeable load.
Transmission to assist with braking going down hill. It doesn't make much difference until there's a noticeable load.