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 MANUALSAUDI1996A4 BASE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)EXTERNAL PAGESDIFFERENT CARSECTION 64 (BRAKE SYSTEM - ABS)ABS/ESP BOSCH 5.7, ASSEMBLY OVERVIEW
1996 Audi A4 Base, Standard
ABS/ESP Bosch 5.7, assembly overview
1996 Audi A4 Base, StandardSECTION ABS/ESP Bosch 5.7, assembly overview
WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2005 Audi allroad, 2004 Audi allroad, 2004 Audi A6, 2003 Audi allroad, and 2003 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
The following list refers to items in Fig 1.
- Bracket for hydraulic control unit
- Removing and installing, see HYDRAULIC CONTROL UNIT, REMOVING AND INSTALLING
- Vacuum pump for brake servo
- Only on gasonline engines in conjunction with an automatic transmission
- ABS control module (w/EDL) - J104-
- The ABS hydraulic unit -N55- and the ABS control module (w/EDL) -J104- are J104- are combined to form the hydraulic control unit.
- Removing and installing, see HYDRAULIC CONTROL UNIT, REMOVING AND INSTALLING
- ABS hydraulic unit -N55- with ABS control module (w/EDL) -J104-
- The ABS hydraulic unit -N55- and the ABS control module (w/EDL) -J104- are combined to form the hydraulic control unit.
- Removing and installing, see HYDRAULIC CONTROL UNIT, REMOVING AND INSTALLING
- Sender 1 for brake booster -G201-
- Bolted onto hydraulic control unit
- Tightening torque 20 Nm
- ABS hydraulic unit -N55- with ABS control module (w/EDL) -J104-
- Rotor for right-front speed sensor
- Checking, see ROTOR, CHECKING
- Right front ABS wheel speed sensor -G45-
- Removing and installing, see ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING
- Brake fluid level warning switch -F34-
- Instrument cluster
- Anti-slip control switch - E132-
- Installation location: on the center console
- Steering angle sensor - G85- for ESP
- Installation location: in the coil connector with slip ring on steering column
- Performing zero position compensation
=> VAS 5051 vehicle diagnostic, testing and information system
- Parking brake warning light switch -F9-
- Installation location: on the parking brake lever assembly
- Rotor for right-rear speed sensor
- Checking: See ROTOR, CHECKING (FWD), or ROTOR, CHECKING (AWD).
- Right rear ABS wheel speed sensor -G44-
- Removing and installing: See ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING (FWD vehicles), or ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING (AWD vehicles).
- Sensor for transverse acceleration -G200- and sender for rotation rate - G202-
- Installation location: underneath the radio
- Removing and installing, see SENSOR FOR TRANSVERSE ACCELERATION -G200- AND SENDER FOR ROTATION RATE -G202- FOR BOSCH 5.7, REMOVING AND INSTALLING
- Left rear ABS wheel speed sensor -G46-
- Removing and installing: See ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING (FWD), or ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING (AWD).
- Rotor for rear left speed sensor
- Checking: See ROTOR, CHECKING (FWD), or ROTOR, CHECKING (AWD).
- Traction control indicator light -K86-
- Installation location: in instrument cluster
- For further information refer to the owner's manual.
- ABS warning light -K47-
- Installation location: in instrument cluster
- For further information refer to the owner's manual.
- Warning light for brake system -K118-
- Installation location: in instrument cluster in driver information system
- For further information refer to owner's manual.
- Brake light switch -F-
- Removing and installing brake light switch, see ABS/ESP SYSTEM COMPONENTS, REMOVING AND INSTALLING
- Adjusting, see ABS/ESP SYSTEM COMPONENTS, REMOVING AND INSTALLING
- Rotor for front left speed sensor
- Checking, ROTOR, CHECKING
- Left front ABS wheel speed sensor -G47-
- Removing and installing, see ABS WHEEL SPEED SENSOR, REMOVING AND INSTALLING
RENDER: 1.0x
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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.