Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSAUDI2019S5 PRESTIGE, 2D COUPEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 185 (GENERAL, TECHNICAL DATA (BRAKE SYSTEM))00 GENERAL, TECHNICAL DATATECHNICAL DATATECHNICAL DATA, BRAKES
2019 Audi S5 Prestige, 2D Coupe
Technical Data, Brakes
2019 Audi S5 Prestige, 2D CoupeSECTION Technical Data, Brakes
WARNING: This page is about a different car, the 2019 Audi S5 Sportback, 2019 Audi RS 5 Sportback, 2019 Audi A5 Sportback, 2018 Audi S5 Sportback, and 2018 Audi A5 Sportback. However, it is still accessible from the selected car via links, so may be relevant.
Brake System
| Components | Version | |
|---|---|---|
| Brake circuit distribution | Dual-circuit brake system with allocation in pairs: left and right front, left and right rear. | |
| Brake Master Cylinder | Tandem brake master cylinder | |
| Brake booster | Vacuum brake booster | |
| Brake pressure regulation | via ABS Control Module -J104- | |
Front Brakes
| PR Number | 1LA, 1LB | 1LC, 1LD, 1LG | 1LE, 1LF, 1LH | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Version | Steel | Steel | Steel | ||||||
| Brake Caliper | ContiTeves | ContiTeves | ContiTeves | ||||||
| Brake Caliper Piston | 1 | 4 | 4 | ||||||
| Brake Rotor | Diameter in mm | 314 | 318 | 338 | |||||
| New thickness | mm | 25 | 30 | 30 | |||||
| Wear limit | mm | 23. Refer to (1) and (2). | 28. Refer to (1) and (2). | 28. Refer to (1) and (2). | |||||
|
|||||||||
Front Brakes
| PR Number | 1LJ | 1LL/1ZA/1ZC/1ZK | 1LM/1LY/1LX 1LZ/1ZX | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Version | Steel | Steel | Steel | ||||||
| Brake Caliper | Akebono | Akebono | Akebono | ||||||
| Brake Caliper Piston | 6 | 6 | 6 | ||||||
| Brake Rotor | Diameter in mm | 350 | 350 | 375 | |||||
| New thickness | mm | 34 | 34 | 36 | |||||
| Wear limit | mm | 32. Refer to (1) and (2). | 32. Refer to (1) and (2). | 34. Refer to (1) and (2). | |||||
|
|||||||||
Front Brakes
| PR Number | 1LU/1LN/1LT | ||||||
|---|---|---|---|---|---|---|---|
| Version | Ceramic | ||||||
| Brake Caliper | Brembo | ||||||
| Brake Caliper Piston | 6 | ||||||
| Brake Rotor | Diameter in mm | 400 | |||||
| New thickness | mm | 38 | |||||
| Wear limit | mm | Determining Wear. Refer to CERAMIC BRAKE ROTOR, DETERMINING WEAR WITHOUT Carbon-Ceramic Brake Wear Tester and (1). | |||||
|
|||||||
Rear Brakes
| PR Number | 1KD/1KE/1KI | 1KF/1KJ/1KK/1KP 1KQ/1KR/1KU/2EJ | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Version | Steel | Steel | |||||||
| Brake Caliper | TRW | TRW | |||||||
| Brake Caliper Piston | 1 | 1 | |||||||
| Brake Rotor | Diameter in mm | 300 | 330 | ||||||
| New thickness | mm | 12 | 22 | ||||||
| Wear limit | mm | 10. Refer to (1) and (2). | 20. Refer to (1) and (2). | ||||||
|
|||||||||
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.