Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 774
The control module is bolted to the hydraulic unit -1- and is located
at right in the engine compartment.
WARNING
Do not bend the brake lines near the ABS Hydraulic Unit -
N55- !
– Read and note the present control module coding.
– If the vehicle has a coded radio, get the radio code from the
customer before beginning.
– Disconnect the battery. Refer to ⇒ Electrical Equipment; Rep.
Gr. 27 ; Battery; Battery, Disconnecting and Connecting .
– Remove the engine cover.
– Remove the noise insulation. Refer to ⇒ Body Exterior; Rep.
Gr. 66 ; Noise Insulation; Overview - Noise Insulation .
– Remove the front exhaust pipe. Refer to ⇒ Rep. Gr. 26 ; Ex‐
haust Pipes/Mufflers; Front Exhaust Pipe, Removing and In‐
stalling .
– Disconnect the connector -1-.
– Loosen the clamping sleeve -2- and slide it toward the rear.
– Remove the bolts -1-.
– Loosen the bolt -2- and the clamp.
– Remove the front exhaust pipe.
– Remove the right driveshaft. Refer to ⇒ Suspension, Wheels,
Steering; Rep. Gr. 40 ; Driveshaft; Driveshaft, Removing and
Installing
– Pivot the suspension strut to the rear and lock.
– On vehicles with heat shield, remove heat shield.
– Unclip the wire routing.
– Press the securing clip down -arrow A-.
– Disconnect the connector -arrow B-.
– Remove the connector -1-.
– Install the Brake Pedal Actuator - VAG1869/2- .
– Attach the bleeder bottle bleed hose -1- to the left front brake
caliper bleed valve.
– Open the bleed valve.
– Attach the bleeder bottle bleed hose -1- to the left rear brake
caliper bleed valve.
– Open the bleed valve.
– Push the brake pedal with the Brake Pedal Actuator -
VAG1869/2- at least 60 mm.
– Close left front and left rear bleeder valves.
– Do not remove the Brake Pedal Actuator - VAG1869/2- .
– Place sufficient lint-free cloths under the control module and
hydraulic unit.
Note
Make sure that brake fluid does not come in contact with the ter‐
minals.
– Remove the cover from the bulkhead and unclip the brake line.
– First, mark both brake lines from master cylinder and remove
from the hydraulic unit.
– Seal the threaded holes immediately with plugs from the as‐
sembly part set part number 5Q0 698 311.
– Mark, remaining brake lines (brake calipers), unfasten and
plug the threaded holes.
– Lift the hydraulic unit with control module up and out of the
dampers -arrow-.
– Place the hydraulic unit with the control module carefully below
in the engine compartment.
Caution
Set aside the ABS Hydraulic Unit - N55- with the ABS Control
Module - J104- so that it cannot fall down.
– Raise the vehicle.
– Remove the bracket in the vehicle from the hydraulic unit
-arrows-.
– Pivot the suspension strut -1- to the side and toward the rear.
Lock it in this position with a wooden block -2-.
– Carefully guide the hydraulic unit with the control module
downward.
– Carefully place the hydraulic unit with the control module at
the bottom of the engine compartment.
Note
Position the ABS Hydraulic Unit - N55- with the ABS Control Mod‐
ule - J104- so that it cannot fall down.
– Raise the vehicle.
– Guide out the hydraulic unit -3- out of the vehicle through the
wheel housing.
Installing
Note
♦
Do not remove sealing plugs at new hydraulic unit until the
corresponding brake line is about to be installed.
♦
If the sealing plugs are removed too early, brake fluid can es‐
cape and unit may not be sufficiently filled or adequately bled.
♦
When installing the hydraulic unit, make sure the damper rub‐
ber is not pushed out of the console.
– Before assembling the holder for the ABS Hydraulic Unit -
N55- in the bracket, spray the rubber bushings with Silicone
Lubricant Spray - D 007 000 A2- .
– Install the brake lines carefully with the Torque Wrench - As‐
sembly Tool - VAG1410/8- .
– Install in reverse order of removal.
Brake Line Tightening Sequence
– Remove the Brake Pedal Actuator - VAG1869/2- .
– Bleed the brake system. Refer to
⇒ “6.2 Hydraulic System, Standard Bleeding”, page 132
.
– Enter radio code.
– Code the ABS Control Module - J104- using the Vehicle Di‐
agnostic Tester .
A Steering Angle Sensor - G85- , Transverse Acceleration Sensor
- G200- , Longitudinal Acceleration Sensor - G251- and Brake
Pressure Sensor 1 - G201- basic setting must be done.
Tightening Specifications
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