yes, with traction control you have no need for diif lock or so the landrover boffins thought, although i am led to beleive that some of the disco 2 do have the facility still on the gear box but the centre console does not reflect that, but with a little tinkering you can have diff lock if your disco is lucky enough to be one of the ones with it,hope that makes sense, just finished bottle of wine, just reaching for the brandy !!