Hydraulic unit, replacing: Preparation
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the battery lead
See Battery, disconnecting .
WARNING:
Never, under any circumstances, open the ABS hydraulic modulator. Reassembling it requires special equipment and facilities.
NOTE:
An ABS modulator for ABS has only eight
valves while an ABS modulator for ABS and
STC (stability and traction control) has ten
valves. The method for replacing the unit is the same for both types. Check thoroughly when installing the new unit that the unit is the correct type.