The electronic control for this system, although beneficial to ride and comfort subsequently proved to be problematic, with reports of error messages blocking the system after failing suspension air bags and pumps. There is however no real problem if air bags are changed when cracks at the bottom appear, exactly as any vehicle owner would do for his tyres. The R380 gearbox is basically the same as in the Range Rover or Discovery 300tdi The primary shaft is different with tiny input diameter for the spigot bearing inside the BMW flywheel and the output shaft has been changed to allow for the different Borg Warner Box. The automatic gearbox is the same ZF 22 HP as i the Discovery td5 or V8. the Borg warner transfer box does not have the direct control of High/Low gears any more. that means that the driver now has to stop the vehicle to shift from high to low gear, the lever has been replaced by an electric control on the dashboard. The chain and sprockets have been reinforced. Differentials have in some models been upgraded to a four pinion version, notably in the V8 edition.