I think they dropped the excellent Torsen diff on later cars?So what do they mean by 'coupling'??
Are they referring to the Transfer Box centre diff..??
The P38 used a viscous coupling...the L322 uses a complex torque sensing device called the Torsen Type B Torque Sensing and Torque Biasing Centre Differential...
Duff brake switch, ABS ECU or loom if the ABS is playing up, but I would guess that the garage will practice emptying your wallet before they manage to fix it.Well it's away to garage now. So who wants to guess what the problem is? Prize for the winner. Lol