IDENTIFICATION OF COMPONENTS : the control units and the sensors (pressure and temperature) always bear the supplier's reference number. NOTE : 1. A pressure sensor N° DX. 144.119 A (I green dot) has been fitted as a repair on a few vehicles only, this sensor is not on sale but it can be replace by pressure sensor N° DX. 144.263 B (1 black dot) 2. New components, the Replacement Parts Dept. supplies only three types of control units ; a) The control unit Ne 5.439.822 A (Bosch Ref. N° 0280.000.042) replacing control units N° DX.