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.
Anti-Lock Braking System (Abs) Repair Information
2019 Audi S5 Prestige, 2D CoupeSECTION Anti-Lock Braking System (Abs) Repair Information
WARNING: This page is about a different car, the 2019 Audi A5 Sportback and 2018 Audi A5 Sportback. However, it is still accessible from the selected car via links, so may be relevant.
- ABS malfunctions do not affect the brake system and the booster. The conventional brake system remains operative even without ABS. A change in braking behavior must be anticipated. When the ABS indicator lamp comes on the rear wheels can lock-up early when braking!
- The ABS is generally maintenance-free.
- Testing, assembly, and repair work may only be performed by qualified personnel.
- By not observing the points described in the Service Information, the system can be damaged and vehicle safety could be compromised.
- Before servicing the ABS, determine the cause of the damage using OBD.
- Disconnect the battery ground cable when the ignition is switched off.
- When handling brake fluid, observe the relevant safety precautions and notes. Refer to BRAKE FLUID GENERAL INFORMATION .
- Bleed the brake system using the Bleeding Equipment :VAS6860 or Brake Charger/Bleeder Unit :VAS5234 for all work that requires opening the hydraulic system. High and low pressure testing should also be performed on the brake system.
- During the final road test, make sure that an ABS-controlled brake test is performed at least once (pulsation must be felt at the brake pedal).
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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.