Audi Workshop Service and Repair Manuals

• ABS speed sensor
• ◆ Before inserting sensor, clean fitting hole inner surface and coat with lubricating paste G 000 650.
• Hexagon socket-head bolt
  8 Nm
• Stub axle
• Cover plate
• Hexagon bolt, 60 Nm
• ◆ With dished washer
• Cross-head screw, 4 Nm

• Brake disc
• ◆ Thickness 9 mm
• ◆ Wear limit 7 mm
• ◆ When worn, always renew both sides
• ◆ Installation sequence for run-in brake disc
• ‒ Brake caliper
• ‒ Brake pads
• ‒ Brake carrier
• Cap
• ◆ Removing and installing

=> Running gear, FWD; Repair group 42; Servicing wheel bearings; Removing and installing wheel bearing/wheel hub unit, vehicles with disc brakes

• Double hexagon nut, self-locking, 175 Nm
• ◆ Renew each time after removing

• Wheel hub with wheel bearing and rotor
• ◆ Replace only as complete unit
• ◆ Removing and installing

=> Running gear, FWD; Repair group 42; Servicing wheel bearings; Removing and installing wheel bearing/wheel hub unit, vehicles with disc brakes

• Axle beam

Removing and installing speed sensor on rear axle

Removing

• ‒ Raise vehicle.

• ‒ → Remove connector -1- from speed sensor line and speed sensor.
• ‒ Unscrew bolt -2- from stub axle.
• ‒ Remove ABS speed sensor from stub axle.

Installing

• ‒ Before inserting sensor, clean inside of hole and coat everywhere with solid lubricant paste G 000 650.
• ‒ Insert speed sensor into hole on stub axle and tighten bolt to 8 Nm.
• ‒ Connect the speed sensor to the speed sensor wire.

Checking rotor on rear axle, removing and installing if necessary

• ‒ Raise vehicle.
• ‒ Remove wheel.
• ‒ Remove the bolt for the ABS speed sensor from the stub axle.
• ‒ Remove ABS speed sensor from stub axle.
• ‒ Inspect rotor for signs of damage or dirt.
• ‒ If the rotor is damaged, remove and replace the wheel hub with rotor.

=> Running Gear, FWD; Repair group 42; Servicing wheel bearing

Removing and installing rear speed sensor wiring

Special tools and workshop equipment required

• ◆ VAS 1978 wiring harness repair kit

Removing

• ‒ Observe or obtain radio code on vehicles with coded radio.
• ‒ Disconnect battery.
• ‒ Remove wheel housing liner.
• ‒ Unplug connector from speed sensor wire and speed sensor.
• ‒ Remove rear side trim

=> General Body Assembly, Interior; Repair group 70; Pillars and side trims; Removing and installing rear side trim.

• ‒ Remove rear storage compartment.

=> General Body Assembly, Interior; Repair group 70; Pillars and side trims; Removing and installing rear storage compartment.

• ‒ → Disconnect speed sensor wire -arrows- using stripping pliers from VAS 1978 and remove defective length of wire.

• ‒ → Use stripping pliers to strip end of wire over a length of 15 mm and fold stripped wire in half.

Installing

• ‒ Insert new speed sensor wire
• ‒ Connect the speed sensor to the speed sensor wire.

• ‒ → Clip in speed sensor wire -arrow-.

When installing the speed sensor wire, make sure it is not twisted in the wheel housing.

• ‒ If present, detach two-pin connector at new speed sensor wire using stripping pliers.
• ‒ Use stripping pliers to strip end of wire over a length of 15 mm and fold stripped wire in half.
• ‒ Connect the speed sensor wire using a suitable crimp connector from wiring harness repair kit VAS 1978.

• ‒ Install rear storage compartment.

=> General Body Assembly, Interior; Repair group 70; Pillars and side trims; Removing and installing rear storage compartment.

• ‒ Install rear side trim.

• ‒ Install the wheel housing liner.