Remove lower engine cover (if available). Remove front panelling - see operation "Panelling - Front, Remove and Install" in group "A". Release and remove wiring harness plug, and remove sensor from reservoir (arrow). Notice: In some models the cleaning fluid residue sensor is accessible when the lower engine panelling is removed. Section II shows such reservoir from below. In this case the front panelling does not need to be removed.
 Install, Connect Insert coolant residue sensor into reservoir, connect wiring harness plug. Attach front panelling - see operation "Front Panelling, Remove and Install" in group "A". Attach lower engine cover (if provided). | 
Remove, Disconnect 