Outside temperature not showing

[hkphooey]

Hi guys
My battery was flat after not using my +2 during lockdown.
Had ignition lights but won't turn engine over and had flicking dials.
Just restarted easily with jump battery pack, but now no outside temperature is showing.
Also I think the stop start isn't neither though it may be because battery is still low.
Can I reset the temperature some how please?
The fuel level took long time to correct itself too, would me disconnecting the battery reset it? Also will this effect my air con.
Where would sensor be please is it easy to replace

[gloucester]

Please don't do multiple postings