A6 C4 no alarm/ir key remote after battery off

[Joop]

Hard to say what else without knowing more detail about what systems the alarm uses.

I'm wondering if your alarm needed a low grade current draw to keep its settings, and whether removing the battery resulted in it exhausting any back up power supply and then defaulting to a safe mode.

In any case, taking it to a dealer for sorting might be the quickest option - they can perform factory resets and recode the remote if necessary.

well it is an factory alarm

[ColonialNomad]

Hard to say what else without knowing more detail about what systems the alarm uses.

I'm wondering if your alarm needed a low grade current draw to keep its settings, and whether removing the battery resulted in it exhausting any back up power supply and then defaulting to a safe mode.

In any case, taking it to a dealer for sorting might be the quickest option - they can perform factory resets and recode the remote if necessary.

[Joop]

yes everything looks fine:
motor starts,radio works lights also
even the central locks is works with the key

[ColonialNomad]

Does the battery still have a charge?

[Joop]

i had to remove the battery for a while
but after placing back the factory alarm does not
works at all/also the remote key does not work.

I dont know how to reactivate again.
please help me