Audi Workshop Service and Repair Manuals

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 brake drum.
• ‒ Remove speed sensor from wheel bearing housing.
• ‒ 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 rear suspension

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.

• ‒ Unplug connector from speed sensor wire and speed sensor.
• ‒ Remove rear side trim => Booklet: General Body Assembly, Interior

=> Repair group 70; Trims/Insulation; Removing and installing rear side trim.

• ‒ → Detach insulation -arrow- from the welded joint.

• ‒ → Disconnect speed sensor wire upstream of welded joint 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.

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

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

• ‒ Connect wiring to wheel speed sensor.
• ‒ 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.