Traction control

[joe90]

Hi,

Can anyone tell me if I want to use the traction control function on a M600 ecu, fitted to a 4 wheel drive vehicle, do I need to fit four wheel speed sensors or is one on each axle sufficient?

Thanks

[DarrenR]

Generally no, you only need one speed sensor front and rear, but it depends on the method you use for traction control.
On a 4WD car it is difficult to know your true ground speed so RPM rate of change method can work well in which you don't need a wheel speed sensor at all.