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.
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HOMESERVICE MANUALSAUDI2018A5 QUATTRO PRESTIGE, 2D CONVERTIBLEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 32 (ANTILOCK BRAKE SYSTEM)45 ANTILOCK BRAKE SYSTEMOVERVIEW - ANTILOCK BRAKE SYSTEMOVERVIEW - ABS/ESP
2018 Audi A5 Quattro Prestige, 2D Convertible
Overview - Abs/Esp
2018 Audi A5 Quattro Prestige, 2D ConvertibleSECTION Overview - Abs/Esp
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2020 Audi S4, 2020 Audi A4 allroad, 2020 Audi A4 Quattro, 2020 Audi A4, and 2019 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.
- Front Speed Sensor
- Right Front ABS Wheel Speed Sensor -G45-
- Left Front ABS Wheel Speed Sensor -G47-
- Refer to OVERVIEW - FRONT AXLE SPEED SENSOR
- Hydraulic Control Unit
- Installed location: in the front left engine compartment.
- with
- ABS Control Module -J104-
- ABS Hydraulic Unit -N55-
- Installed location: in the front left engine compartment.
- The control module and the hydraulic unit can be separated
- Refer to OVERVIEW - CONTROL MODULE AND HYDRAULIC UNIT
- Vacuum Sensor -G608-
- Refer to OVERVIEW - VACUUM PUMP
- Switch Module in Instrument Panel, Center -EX22-
- with
- ASR/ESP Button -E256-
- Hill Descent Control Button -E618- (equipped on some models)
- Removing and Installing. Refer to CONTROLS .
- with
- Electromechanical Parking Brake Button -E538-
- with
- Electromechanical Parking Brake Button -E538-
- -Auto Hold- Button -E540-
- Electromechanical Parking Brake Indicator Lamp -K213-
- -Auto Hold- Indicator Lamp -K237-
- Push Button Illumination Bulb -L76-
- Removing and installing. Refer to CONTROLS .
- with
- Right Rear Brake Pad Wear Sensor -G37-
- Only on the right side in the inner brake pad
- Refer to OVERVIEW - REAR BRAKES
- Rear Speed Sensor
- Right Rear ABS Wheel Speed Sensor -G44-
- Left Rear ABS Wheel Speed Sensor -G46-
- Refer to OVERVIEW - REAR AXLE SPEED SENSOR
- Instrument Cluster with Instrument Cluster Control Module -J285-
- The indicator lamps cannot be replaced separately
- Replace the instrument cluster if faulty. Refer to INSTRUMENT CLUSTER .
- Brake Lamp Switch -F-
- Component location: on the brake master cylinder
- Refer to OVERVIEW - BRAKE BOOSTER/BRAKE MASTER CYLINDER
- Front Brake Pad Wear Sensor
- Left Front Brake Pad Wear Sensor -G34-
- Right Front Brake Pad Wear Sensor -G35- ; not on all models. For the correct allocation, refer to the Parts Information.
- In the respective inner brake pad
- Refer to OVERVIEW - FRONT BRAKES
RENDER: 1.0x
NO RELATED
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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.