Low range is a reduction gear range in off-road cars. It makes driving easier on difficult terrain and on very steep gradients. Together with 4MOTION four-wheel drive, it allows the car to make good progress over rugged ground. In the Touareg, the reduction gear ratio of 2.66:1 for heavy-duty off-road driving can be electronically activated by means of the suspension switch. This provides maximum drive force at low speeds. It enables the Touareg to safely climb slopes of 45 degrees.
Article source: www.volkswagen.co.uk