low battery indicated remove battery check voltage if 3v clean battery around the area where the contacts touch and the contacts also isopropal will do refit battery will save a new one

Welcome to the forum.

A rather confused post - but if your battery standing voltage has fallen to around 3 VDC, it is probable that it will be beyond recovery.

Maybe in the keyfob?

Would be 3.2 V to 3.3 V when new.

If the "low battery" appears check both fobs

Edited yesterday at 11:461 day by Stonekeeper

3 hours ago, Stonekeeper said:

Maybe in the keyfob?

Would be 3.2 V to 3.3 V when new.

If the "low battery" appears check both fobs

Aaaah, that makes sense now - I confess, Ops failure to use a single punctuation mark did throw me!

thanks for the info re key fobs ,have had a 2017 green fabia and now a green scala , both my keyfobs have gone through the same scenario , and as an electronic tech for many many years have some knowledge and found both keyfobs exhibiting indentical low battery warnings , what i found upon close scrutiny two marks on the underside of the battery case where the finger contacts connect very minimal signs of increased resistance which on clean up has resulted in ongoing reliability, if the fob failed away from home even removing the battery and repositioning it could achieve a result especially if holding the fob to the start button failed , hope this clarifies my previous post ps this is only my second post so i'm still learning