LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Audi
>>
2025
>>
S4 Premium Plus
>>
Repair and Diagnosis
>>
Quick Lookups
>>
Electrical Component Locations
>>
Component Locations: All-Wheel Drive
>>
Comp. LOC. All-Wheel Drive
>>
Hydraulic Control Unit
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
Hydraulic Control Unit
Fig 1: Identifying Hydraulic Control Unit Connectors
Courtesy of AUDI OF AMERICA, LLC
1 -
Oil Pressure/Temperature Sensor 2 -G640-
2 -
Oil Pressure/Temperature Sensor -G437-
3 -
All Wheel Drive Clutch Valve 2 -N446-
4 -
All Wheel Drive Clutch Valve -N445-