Normal Operation
WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
When the vehicle operating in 4H mode, all 4 wheels rotate at the same speed. The amount of traction the vehicle can achieve depends on the amount of traction each tire can establish with the road surface. In order for the all wheel drive (AWD) system to operate correctly, each wheel/tire assembly must have matching sizes, and the front and rear axle ratios must match.
Possible Causes
- 4H indicator
- Four wheel drive (4WD) control module (PCM)
- Transfer case and related components
- Wheel/tire assemblies