Brake system of the car Renault Megane 2

General information about the braking system
The car is equipped with two diagonally located brake circuits. One circuit uses the front right and rear left wheels, the second - the front left and rear right wheels. When only one of the circuits is working, you...

Frequency of brake fluid replacement
As the brake linings wear out, the brake fluid level in the reservoir gradually decreases. There is no need to compensate for this decrease: the level will be restored at the next brake pad replacement. However, the...

Bleeding air from the hydraulic drive of the service brake system
Use only fresh DOT 3 or DOT 4 brake fluid. Bleeding the hydraulic drive of the service brake system is necessary to remove air, which significantly reduces the efficiency of braking. Air can get into the hydraulic drive...

Bleeding the pressure control circuit
This operation is performed after removing or replacing one of the following elements: master brake cylinder; hydraulic unit; brake fluid; brake hydraulic fluid reservoir. Place the vehicle on a two-post lift. Connect:...

Removal and installation the master brake cylinder
Removal Place the vehicle on a two-post lift. Disconnect the battery. Remove: windshield wiper arms; air intake niche grille; Fig. 6.9. Removing the air filter access panel fasteners: 1 – mounting bolts Unscrew the...

Checking, removing and installing the brake booster
The brake booster, located on the firewall, operates using the vacuum in the intake manifold and atmospheric pressure. After completing each operation that involved removing any of the brake system components, perform a...

Checking the brake booster check valve
Perform the check on the check valve installed in the vacuum hose. Remove the brake booster vacuum hose. Note: The check valve is installed with tension in the vacuum hose according to the installation marks. Check the...

Removal and installation the brake booster check valve
Removal Remove the top engine covers. Fig. 6.26. Removing the air duct: 1 – mounting clamps; 2 – air duct Loosen the air duct mounting clamps and remove it (Fig. 6.26). Fig. 6.27. Disconnecting the vacuum inspection...

Removal and installation the brake pedal (with automatic transmission)
Removal the pedal Fig. 6.37. Removing the glove compartment and headlight beam adjuster switch: 1 – storage box; 2 – headlight beam direction corrector switch Disconnect the glove box, the headlight beam adjuster switch...

Removal and installation the brake light switch
Removal Disconnect the brake light switch connector. Fig. 6.48. Removing the brake light switch: 1 – switch connector; 2 – switch Turn the brake light switch a quarter turn counterclockwise (Fig. 6.48). Note: Handle the...

Checking the parking brake cable
Examination Place the car on a lift. Fig. 6.50. Checking the parking brake cable with booster Check the position of the power parking brake cable (Fig. 6.50). If the power parking brake cable is secured, install a strap...

Removal and installation the parking brake cable
(cars without automatic parking brake) Removal Place the vehicle on a two-post lift. Fig. 6.53. Removing the center console carpet: 1 – rug Remove the center console carpet (Fig. 6.53). Fig. 6.54. Removing the center...

Removal and installation front brake pads
Removal Place the vehicle on a two-post lift. Unlock the steering wheel. Remove the front wheels. Fig. 6.59. Removing the spring and brake hose: 1 – spring; 2 – brake hose Remove the spring from the front of the bracket...

Removal and installation the front brake hose
Removal Caution! Ensure that brake fluid is collected to prevent damage to mechanical parts and body parts located near the brake system components. Fig. 6.62. Brake hose Install a pressure device on the brake pedal to...

Removal and installation the front brake caliper
Note: When replacing brake pads or a brake disc, be sure to replace the pads or disc on the other side of the vehicle. Removal Place the vehicle on a two-post lift. Install a pressure device on the brake pedal to reduce...

Shoe guide of the front brake mechanism
Removal Place the vehicle on a two-post lift. Remove the front wheels. Fig. 6.65. Removing the guide pin and guide shoe fastenings: 1 – mounting bolts; 2 – brake shoe guide mounting bolts Loosen the guide pin mounting...

Brake disk of the front brake mechanism
Removal Note: Brake discs cannot be ground. If they are significantly worn or have deep scratches, replace the discs. Note: When replacing brake discs, replace them together with the brake pads. Place the vehicle on a...

Removal and installation rear brake pads
Visual inspection of pad thickness Check the thickness of the pads. To do this, lift the car, remove the wheel and look through the inspection hole in the cylinder body. Minimum thickness of brake pads: 1 mm. Wear...

Removal and installation the rear brake caliper
Note: When replacing brake pads or a brake disc, be sure to replace the pads or disc on the other side of the vehicle. Removal Place the vehicle on a two-post lift. Install a pressure device on the brake pedal to reduce...

Rear brake shoe guide
Removal Place the vehicle on a two-post lift. Release the parking brake. Remove the rear wheel. Release the parking brake cable. Mark the cable route for subsequent installation. Loosen the guide pin mounting bolts....

Removal and installation a rigid brake line
Removal Place the vehicle on a two-post lift. Install a pressure device on the brake pedal to reduce the amount of brake fluid leaking out. Raise the car. Left rear brake rigid line Fig. 6.75. Releasing the left rigid...

Rear brake shoe brake disk
Removal Note: Brake discs cannot be ground. If they are significantly worn or have deep scratches, replace the discs. Note: When replacing brake discs, replace them together with the brake pads. Place the vehicle on a...

Anti-lock braking system (ABS)
General information The car is equipped with ABS BOSCH 8.0 system. Depending on the vehicle's equipment level, the BOSCH 8.0 system includes only ABS brakes or ABS combined with the electronic stability control (ESC)....

Removal and installation the hydraulic unit
Removal Place the vehicle on a two-post lift. Disconnect the battery. Place the tool on the brake pedal to reduce the amount of brake fluid leaking out. Drain the refrigerant from the refrigeration circuit. Remove the...

Removal and installation the angular and lateral acceleration sensor
Removal Disconnect the battery. Fig. 6.96. Removing the drawer frame fasteners Remove the drawer frame by pressing the spring latches (Fig. 6.96). Fig. 6.97. Removing the drawer: 1 – spring latch Remove the drawer by...

Removal and installation of ABS ECU
Removal Place the vehicle on a two-post lift. Remove the hydraulic unit assembly. Fig. 6.99. Removing the ECU: 1 – mounting bolts; 2 – ECU housing Unscrew the ECU mounting bolts on the pressure control unit and remove...

Decoding the symbols of the basic diagram of the electric pump
Table 6.2. Decoding the symbols of the basic diagram of the electric pump Designation Hydraulic Inputs 1 Brake pressure from the master cylinder 2 Combined angular and lateral acceleration sensor signal 3 Wheel speed...

Possible malfunctions of the brake system
Table 6.4. Possible malfunctions, their causes and methods of elimination

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Other sections on other Renault models

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➽ Chassis, running gear: Brake system Renault Laguna 2 (2001-2007)

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Megan 2 (2002-2009, petrol)