Friday, December 16, 2011

Anybody knows how to lock the 4-wheel drive function on a 2006 Acura MDX?

I found this button "VTM-4 lock" just besides the steering wheel, however when I pressed it there was no feedback and I don' know whether that was the button responsible for 4-wheel drive or not. Can anyone help me?|||You just pushed a button that makes your MDX have permanent 4WD (locking rear differential). To reduce drive train noise and increase fuel efficiency, the system runs as front wheel drive during normal cruising so only push the VTM-4 lock button when climbing steep hills and getting out of stuck situations.





Edit: Your MDX will automatically activate the VTM-4 lock if it finds necessary, otherwise, you can manually activate it while in 1,2, or R. If the button did not illuminate, it did not activate.|||vtm is Variable Torque Management





oh i found this





The MDX's innovative VTM-4 (Variable Torque Management庐 4-Wheel Drive) all-wheel drive system works with the Vehicle Stability Assist (VSA) to provide extra traction during acceleration and when encountering slippery road conditions. Additional VTM-4 benefits are improved dry-road vehicle dynamics, medium-duty off-road capability, and a lock feature to aid extraction from severe "stuck" conditions. A compact transfer case is bolted directly to MDX's front-mounted transaxle. A two-piece propeller shaft delivers torque from the transfer case to a rear axle drive unit and two computer-controlled, electromagnetically-powered clutches engage as needed to provide torque to the rear wheels. The VTM-4 system provides up to a 30 percent increase in rear torque for enhanced handling and increased steering feel, especially in slippery situations.

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