S4'ed

The replacement of the oil pressure/temperature sensor requires a software adaptation procedure for the Sport Diff control module. I don't know anymore details on this, but you might need to take the car to the Audi dealer to have them perform this adaptation.

From an Audi Technical Service publication:
Important Service Notes
Both the ATF fi ll and hypoid gear oil fi ll are lifetime oils
and do not require changing during routine scheduled
maintenance. However, if repairs to the hydraulic controls
are made, for example changing of the Oil Pressure/
Temperature Sensors, All Wheel Drive Clutch Valves or
hydraulic pump, the oil levels must be topped off. After
this is done, a special bleeding process must be carried
out via the scan tool.
Oil Pressure/Temperature Sensors G437 and G640 have
their own serial numbers and characteristics. They are
used to establish the identity of the sport differential for
All Wheel Drive Control Module J492. They are colorcoded
and must not be installed in the wrong positions.
G437 and G640 should never (if possible) be replaced
at the same time. Always replace one after the other. If
this isn’t done, All Wheel Drive Control Module J492 will
assume a new sport differential has been installed and
additional adaptation and maintenance procedures will
be necessary, including changing of the ATF.
The speed modulation gearboxes (or super-position
gearboxes) are tested and calibrated during the
manufacturing process. The tolerances for each gearbox
are inscribed on the sport differential housing in the form
of a hexadecimal code. This code is used for adaptation
via the VAS Scan Tool when repairs are made to the
differential.
The VAS Scan Tool is used to diagnose the sport
differential system. Information is found under Address
Word 22.
In addition to doing adaptations and coding procedures,
it is also possible to perform output check diagnosis.
The output checks allow you to bleed the system, check
the over-all functionality of the system, and to check
the applied torque of the left and right clutches. This
information is found in both Guided Functions and

omar122011

hi I’m wondering if someone can please help me with an issue I am having. I have a 2014 Audi S4 B8.5 and earlier today when I was driving the system fault sport differential popped up. I went home and parked the car and I left it and when I took it out next to the light is gone and it doesn’t look like it’s coming back. Could that have just been like a fake thing or is does that definitely mean there’s an issue with the diff? Please help thank you

Mario S

Mine also came up and for me it would only come up when I would take a left turn and I took it to the dealer and I had to replace 2 valves on my sport differential which cost me like $600. Most of the time when I would drive it would pop up but sometimes it didnt
[
QUOTE=omar122011;25494197]hi I’m wondering if someone can please help me with an issue I am having. I have a 2014 Audi S4 B8.5 and earlier today when I was driving the system fault sport differential popped up. I went home and parked the car and I left it and when I took it out next to the light is gone and it doesn’t look like it’s coming back. Could that have just been like a fake thing or is does that definitely mean there’s an issue with the diff? Please help thank you[/QUOTE]