Golf GLS L4-2.0L (AZG) (2001)
Brake Bleeding: Service and Repair
Brake system, bleeding
Vehicles with ABS and ABS/EDL
When at least one chamber in the brake fluid reservoir is completely empty (e.g. leaks in braking system) the hydraulic unit must be bled using the
VAG 1551 scan tool in function 04, "basic setting".
WARNING! Do not exceed a filling pressure of 1 bar (14.5 psi) when filling with brake fluid using pressure bleeder US1116. The brake system will
not be completely bled if excessive pressure is used.
Notes:
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Bleeding the brake system on vehicles with ABS is the same as for vehicles with conventional braking systems with the exception of using
function 04 to bleed systems that have been completely empty.
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Brake fluid absorbs moisture from the air and must therefore be replaced every two years. Use only new, unused and approved brake fluid that
complies with MVSS 116 DOT4.
Notes:
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Brake fluid is poisonous. Also due to its corrosive effect brake fluid must not come into contact with paintwork.
^
Brake fluid must always be stored in airtight containers.
^
Do not use silicone-based brake fluid (DOT 5). Even the smallest trace can cause severe corrosion in the brake system.
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Rinse off brake fluid spillages using plenty of water.
Brake system, bleeding using US1116 pressure bleeder
Special tools and equipment required
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US 1116 brake bleeder
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Connect brake filling and bleeding unit.
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Open bleeder valves in specified sequence and bleed brake calipers.
Bleeding sequence
1
Right rear caliper
2
Left rear caliper
3
Right front caliper
4
Left front caliper
Vehicles with ABS or ABS/EDL
^
Test drive vehicle and perform at least one brake application sufficient to engage ABS regulation.
Brake system, bleeding without pressure bleeder
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Build-up brake pressure in brake system by pumping brake pedal.
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Connect hose from bleeder bottle to brake bleeder valve at each wheel in turn.
^
Open bleeder valve.
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Hold brake pedal down, close bleed screw.
Note: The brake fluid level in the reservoir must not fall below the MIN mark during bleeding.
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Release brake pedal.
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Repeat operation until brake fluid flows without air bubbles.