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是自家的原生零碎，仍是从哪家过继的？
好比4x4版D90的，「THE D90 has what’s called an ‘All-Terrain Four Wheel Drive System’ that has modes for ‘Snow’, ‘Mud’, ‘Sand’ and ‘Rock’. The ‘Snow’ mode uses auto proportioning of the ‘smart’ centre diff and works surprisingly well on gravel and unsealed roads. Land Rover, with its Terrain Response system, which pioneered this technology, combines ‘Grass-Gravel-Snow’ in one mode, so this is probably no surprise.
Selecting either the ‘Sand’ or ‘Mud’ modes feels to lock the centre diff, while selecting the ‘Rock’ mode additionally engages low range and is also the only way to engage low range, as there isn’t a separate low-range switch.
This probably needs a rethink to allow you to select either ‘Sand’ or ‘Mud’ and low range. You can, of course, always use the ‘Rock’ mode for heavy sand or mud conditions, and it seems to work okay, but going on our experience with Land Rover’s excellent Terrain Response system, powertrain and chassis electronics optimised for slow rock climbing aren’t ideal for sand or mud, and vice versa.」
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论坛元老