Vehicle braking system Audi A8 D2

General information about the braking system
According to its purpose and functions, the braking system is divided into working, spare, parking and emergency. The working braking system ensures the...

Anti-lock braking system (ABS)
Braking efficiency is greatest when the tire's grip on the road surface is at its maximum. During braking, the tire slides along the surface, and the wheel's...

Electronic Stability Program (ESP)
The stabilization system controls the vehicle's dynamics in extreme conditions, such as when cornering at high speed. The risk of the vehicle skidding or...

General recommendations for operation and repair of anti-lock braking system and electronic stabilization system
The anti-lock braking system (ABS) and the electronic stability program (ESP) do not require maintenance during operation. Inspection, removal, installation...

Checking the ABS sensor rotor
Loosen the front wheel mounting bolts, then raise the front of the car and secure it on stands. Remove the front wheel. Remove the ABS sensor from the steering...

Replacing the front brake pads FN-3
Fig. 15–4. FN-3 Front Brake: 1 – brake pipe; 2 – protective cap; 3 – guide pin, 25 Nm; 4 – brake hose, 15 Nm; 5 – support; 6 – bolt, 120 Nm;7 – caliper holder...

Replacing the front brake pads HP-2
Fig. 15–8. HP-2 front brake: 1 – bolt, 25 Nm; 2 – bracket; 3 – bolt, 200 Nm; 4 – brake hose, 15 Nm; 5 – brake caliper with mass shock absorber; 6 – Torx bolts,...

Replacing the front brake pads Brembo
Removal The brake pads are equipped with a wear indicator. If the thickness of the brake pads is less than 3 mm, a warning lamp lights up in the instrument...

Replacing rear brake pads
Fig. 15–16. Rear brake caliper: 1 – self-locking bolt, 30 Nm; 2 – brake shoe; 3 – caliper holder with guide pins and protective covers (supplied assembled as...

Repair of the front caliper FN-3
Fig. 15–19. FN-3 front caliper: 1 – protective cap; 2 – guide pin, 25 Nm; 3 – bleed nipple; 4 – protective cover; 5 – support; 6 – spring; 7 – bushing; 8 –...

Repair of the front caliper HP-2
Fig. 15–23. HP-2 front support: 1 – protective cap; 2 – bleed nipple; 3 – caliper bracket housing; 4 – sealing ring; 5 – piston; 6 – protective cover The HP–2...

Brembo Front Caliper Repair
Note: Before screwing in the fittings, apply a thin layer of G 052 150 A2 grease to the threads. The parts of the caliper bracket housing are connected by...

Rear Caliper Repair
Fig. 15–30. Rear caliper: 1 – self-locking bolts, 35 Nm; 2 – support with lever for parking brake cable; 3 – bleed nipple; 4 – protective cap; 5 – sealing...

Brake disc
Removal Loosen the wheel mounting bolts, lift the relevant part of the car and secure it on stands. Remove the wheel. To reduce brake fluid loss, remove the...

Parking brake lever
Removal On all-wheel drive vehicles, remove the rear section of the exhaust system. Fig. 15–38. Location of bolts for fastening the propeller shaft flange to...

Adjusting the parking brake
The rear brakes are automatically adjusted, so no adjustment is required during operation. Adjustment is only necessary after replacing the parking brake...

Parking brake cables
Removal Raise the car on a lift and remove the rear wheels. Let go parking brake . On all-wheel drive vehicles, remove the rear section of the exhaust system....

Bleeding the hydraulic brake drive
Use only fresh DOT 4 brake fluid. Bleeding of the brake system is carried out using the VAG 1869 bleeding unit. Connect the bleeding unit in accordance with...

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