Audi Workshop Service and Repair Manuals

Electrical/electronic components and fitting locations

1 -	Four-wheel drive control unit -J492-

q	Fitting location in A4 saloon, A5 Coupé and A5 Cabriolet → Fig.

q	Fitting location in A4 Avant → Fig.

q	Fitting location in A5 Sportback → Fig.

q	Fitting location in A6 and A7 → Fig.

q	Fitting location in A8 → Fig.

q	Removing and installing → Chapter

q	Additional work required after renewing control unit → Chapter

q	Important signals are transferred from the engine control unit and ABS control unit -J104- via data bus to the four-wheel drive control unit

2 -	ABS control unit -J104-

q	Fitting location; removing and installing → Rep. gr.45

3 -	Diagnostic connector

q	Fitting location: in driver's footwell (front) → Fig.

q	Connecting vehicle diagnostic, testing and information system -VAS 5051B- or -VAS 5052- and selecting functions → Chapter

4 -	Hydraulic control unit

q	Fitting location: on rear final drive

q	Removing and installing → Chapter

q	Dismantling and assembling → Chapter

q	Hydraulic control unit with:

t	Four-wheel drive pump -V415-

t	Oil pressure and oil temperature sender 2 -G640-

t	Oil pressure and oil temperature sender -G437-

t	Clutch valve 2 for four-wheel drive -N446-

t	Clutch valve for four-wheel drive -N445-

5 -	Instrument cluster display

Diagnostic connector Fitting location: diagnosis connector for vehicle diagnostic, testing and information system -VAS 5051B- or -VAS 5052- is located in driver's footwell.

Four-wheel drive control unit -J492- in A4 saloon, A5 Coupé and A5 Cabriolet Fitting location: the four-wheel drive control unit -J492--A- is located in the spare wheel well in front of the battery.

Four-wheel drive control unit -J492- in A4 Avant Fitting location: the four-wheel drive control unit -J492--1- is located on the right of the luggage compartment in front of the spare wheel well.

Four-wheel drive control unit -J492- in A5 Sportback Fitting location: the four-wheel drive control unit -J492--1- is located on the rear wheel housing (right-side) behind the luggage compartment side trim → Rep. gr.70.

Four-wheel drive control unit -J492- in Audi A6/A7 Fitting location: the four-wheel drive control unit -J492--A- is located on the right side of the spare wheel well.

Four-wheel drive control unit -J492- in A8 Fitting location: the four-wheel drive control unit -J492--1- is located on the left side of the spare wheel well.