Share my experience here! Yesterday, I have used <ahref="http: www.mbstartool.com="" wholesale="" mb-sd-connect-compact-4-star-diagnosis-cars-trucks.html"="">MB SD connect c4to display the outdoor air temperature on the status line of the bottominstrument clusterdisplay.

I used:

SD Connect C4 diagnostic tool

Latest version 2016.03V Xentry

Laptop with Win 8 operating system
Steps to display the OAT:

Change the National identity from GB to Nederlands(my choice) as GB cars are prevented from displaying the temperature on the statusline.
In theBody Control Unit Menu
selectRear Sam
selectControl Unit Adaptations
thenNational version of ATA function
now choose a suitable National version
and write change to Control Unit.
In theInstrument ClusterMenu
selectDiagnosis to plant specifications
In theMain Menu of Control Module K16
selectControl unit adaptations
In theControl unit adaptations menu
selectControl unit adaptations (Variant Coding)

(if at this stage you select Menu-Werkseinstellung (Factory settings) and check the entry in Anzeige in Statuszeile you should find Geschwindigkeit if the car is UK registered. )

selectAktuelle Menueinstellung
change entries in
Anzeige in Statuszeile
toAussentemperatur (3 times)
selectVariantenkodierung
changeMenu 04 to Vorhanden
enableMenu 05 and Menu 08

save coding and retire with a stiff drink.

Done!

source:http://blog.mbstartool.com/2016/04/28/display-outside-air-temp-with-mb-sd-c4/