Bosch ABS M4, User Manual, Page: 35 / 54

Repair Bleeding (Tandem MC)
You choose “Repair Bleeding (Tandem MC)” if your system always delivers the
proportionally equal pressure ratio to front and rear axle when you actuate the
brake pedal. You also choose “Repair Bleeding (Tandem MC)” if your car has only
one master cylinder for both axles like a street car.
Click on the button “Repair Bleeding (Tandem MC)”: A new window will open and
lead you step by step through the instruction for bleeding the hydraulic aggre‐
gate. You will need an assistant to perform the ABS bleeding procedure.
Repair Bleeding (Balance Bar)
You choose “Repair Bleeding (Balance Bar)” if the vehicle is equipped with dual
master cylinders and a balance bar.
Click on the button “Repair Bleeding (Balance Bar)”: A new window will open and
lead you step by step through the instruction for bleeding the hydraulic aggre‐
gate. You will need three people to perform the instruction.
Notice
For vehicles with brake balance bar, please open one front and
one rear bleeder valve for proper function of the balance bar
during the bleeding routine procedure.
ECU Info (Diagnostics)
Indication lamp
When you turn on the ignition or the ABS M4, the ABS warning light (MIL) comes
on briefly and then turns off again. This indicates the light's self‐testing process.
If the ABS warning light (MIL) does NOT light up when you turn on the ignition
or the ABS M4, you must establish the reason for this before taking any further
action or before driving the vehicle.
9.2.6
Programming and Diagnosis Software | 9
Bosch Motorsport ABS M4 Manual 35 / 54