XC90 AWD V8-4.4L VIN 85 B8444S (2005)
Brake Fluid Pressure Sensor/Switch: Service and Repair
Pressure sensor, master cylinder, replacing
Preparations for replacing the pressure sensor on the master cylinder
(5-cylinder naturally aspirated engine) Remove the air cleaner (ACL) and preheating hose, see: See: Brake Fluid Level Sensor/Switch/Service and
Cars with turbocharger (TC):
Remove the air hose between the air cleaner (ACL) and the turbocharger (TC).
Remove the relay box.
Preparations for checking the pressure sensor
Turn on the ignition.
Press the dynamic stability and traction control (DSTC) button on the dashboard (the green lamp lights in the button) so that the DSTC system is
Checking pressure sensor