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Originally Posted by scottl
I am new to this board and I am planning on replacing my T100 with a DC Tundra a few months. I used the search feature and could not find answers to some of my questions, so I thought I would post them.
First question is regarding the VSC/TRAC options. My dealer gave me literature which describes an electronic LSD to go along with the traction control features. After reading it I cannot help but think it is just as easy to go into 4wd as it would be to use this feature. I would like to install the ARB into the Tundra from my T100, but I cannot figure out if the ELSD is a requirement for the system to work. I live in Wyoming and any help I can get in regards to traction control is worth checking into. The dealer has no information on these features.
Second question: Has anyone towed with a SCed 4.7? No more than 5k #s, at high elevations? Any pinging? I have the 3.4 SC and it pings under certain conditions. I would consider another SC, but after my experience with my current SC I am reluctant to buy one.
Third question: Do 285/75/16s fit without a lift in the front? Does anyone run a winch bumper with winch? Can the front suspension handle the extra load? If not, what are my options? I threw this last question in w/o a search.
Thanks
Scott
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The Auto LSD achieves the equivalent functions of an LSD (Limited Slip Differential) through the use of a traction control system. For this reason, the contents of brake control are the same between Auto LSD and TRAC. When the driver presses the Auto LSD switch, this system achieves the LSD effect by regulating the hydraulic pressure that acts on the drive wheels and controlling the engine output in accordance with the amount of pedal effort applied on the accelerator. TRAC enhances the startoff performance of the vehicle during low-resistance surface conditions, such as snow or mud, by restricting the acceleration effort during a startoff, in order to prevent the wheels from spinning. On the other hand, Auto LSD tends to enhance the acceleration effort somewhat, in order to apply greater drive torque to the wheel that is making contact with the ground. Thus, this function enables the vehicle to get unstuck if a wheel loses its grip, and enhances the vehicle’s startoff performance on high-resistance surface conditions such as gravel roads.
Precautions for Operating the Auto LSD:
Operate the Auto LSD control only when the wheels are susceptible to spinning, such as when driving on a grooved, slippery, or rough surface.
Make sure the vehicle is stopped before turning ON the Auto LSD function.
To prevent unstable driving conditions, do not continue driving the vehicle with the Auto LSD function turned ON.
The following conditions must be met to operate the Auto LSD system.
Auto LSD indicator light turns on when the operation enables.
i) With the vehicle stopped, the Auto LSD switch has been pressed.
(Auto LSD system operates by pushing the Auto LSD switch. Vehicle must be stopped to turn on the system. It is possible to turn off the system even if the vehicle is not stopped.)
ii) The transfer unit is in the 2WD mode.
iii) The accelerator pedal has been pressed and the vehicle is accelerating.
(The system is prohibited so as not to prevent the braking operation when depressing the brake pedal.)
The slip indicator on the combination meter panel will blink when the Auto LSD function is operating.
If the brake control of the Auto LSD is operated continuously, the temperature of the actuator in the hydraulic brake booster will rise.
The skid control ECU, which monitors the temperature of the brake actuator, alerts the driver by sounding the buzzer intermittently if the brake actuator becomes overheated. In this case, the Auto LSD will momentarily stop its operation in order to protect the system.
The Auto LSD applies brakes to the drive wheels, and controls the extent of the brake application in order to achieve the function of an LSD. However, it might not be able to achieve this function on a steep incline or on an extremely slippery surface, such as a frozen snow surface.
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