automatic four wheel drive engagement (when slippage is detected)
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Amateur
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automatic four wheel drive engagement (when slippage is detected)
Does the 2009 Dodge Ram 1500 Quad Cab 4x4 SLT 4.7L truck include the automatic four wheel drive engagement (when slippage is detected) feature? I know on the **** there is 3 options: 2wd, 4x4 Auto, 4x4 Lock. Is 4x4 Auto this feature? If so, can you have the truck in 4x4 Auto all the time (normal driving) or can that cause damage?
Amateur
Joined: Mar 2009
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This is from the owners manual. Hope this helps.
This electronically shifted transfer case provides five
mode positions:
This electronically shifted transfer case provides five
mode positions:
•
Two-wheel drive high range (2WD)
•
Four-wheel drive automatic range (4WD AUTO)
•
Four-wheel drive lock range (4WD LOCK)
•
Four-wheel drive low range (4WD LOW)
•
Neutral (NEUTRAL)
This electronically shifted transfer case is designed to be
driven in the two–wheel drive position (2WD) or fourwheel
drive position (4WD AUTO) for normal street and
highway conditions (dry hard surfaced roads). Driving
the vehicle in 2WD will have greater fuel economy
benefits as the front axle is not engaged in 2WD.
For variable driving conditions the 4WD AUTO mode
can be used. In this mode, the front axle is engaged, but
the vehicle’s power is sent to the rear wheels. Four-wheel
drive will be automatically engaged when the vehicle
senses a loss of traction. Because the front axle is engaged,
this mode will result in lower fuel economy than
the 2WD mode.
When additional traction is required, the transfer case
4WD LOCK and 4WD LOW positions can be used to lock
the front and rear driveshafts together and force the front
and rear wheels to rotate at the same speed. This is
accomplished by rotating the 4WD Control Switch to the
desired position. Refer to “Shifting Procedure” for specific
shifting instructions. The 4WD LOCK and 4WD
LOW positions are designed for loose, slippery road
surfaces only. Driving in the 4WD LOCK and 4WD LOW
positions on dry hard surfaced roads may cause increased
This electronically shifted transfer case is designed to be
driven in the two–wheel drive position (2WD) or fourwheel
drive position (4WD AUTO) for normal street and
highway conditions (dry hard surfaced roads). Driving
the vehicle in 2WD will have greater fuel economy
benefits as the front axle is not engaged in 2WD.
For variable driving conditions the 4WD AUTO mode
can be used. In this mode, the front axle is engaged, but
the vehicle’s power is sent to the rear wheels. Four-wheel
drive will be automatically engaged when the vehicle
senses a loss of traction. Because the front axle is engaged,
this mode will result in lower fuel economy than
the 2WD mode.
When additional traction is required, the transfer case
4WD LOCK and 4WD LOW positions can be used to lock
the front and rear driveshafts together and force the front
and rear wheels to rotate at the same speed. This is
accomplished by rotating the 4WD Control Switch to the
desired position. Refer to “Shifting Procedure” for specific
shifting instructions. The 4WD LOCK and 4WD
LOW positions are designed for loose, slippery road
surfaces only. Driving in the 4WD LOCK and 4WD LOW
positions on dry hard surfaced roads may cause increased
tire wear and damage to the driveline components.
Transfer Case Switch (5–Position)
STARTING AND OPERATING 321
5
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Amateur
Joined: Dec 2010
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Thanks, so what conditions would you think would be best to use 4x4 Lock and 4x4 Low?
For example, 4x4 Lock for off-road, mild snow and ice and 4x4 Low for off-road and extreme snow and ice?
For example, 4x4 Lock for off-road, mild snow and ice and 4x4 Low for off-road and extreme snow and ice?
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Captain
Joined: Aug 2009
Posts: 570
Likes: 2
From: middle of the state, IA
4 lo is something you will most likely never use. Most of the time it gets used for rock crawling situations. I have owned trucks my whole life and have never needed 4 lo but that is just me, some people use it all the time but most never need it. And yes, 4x4 lock is mostly for snow, ice and off road.
