No ignition lights and doors wont unlock after replacing key fob battery

2009 Vauxhall Meriva 1.4
Car: Vauxhall Meriva
Year: 2009
Variant: 1.4
Categories: Electrics, ECU, Warnings & Lights
I changed the battery in the fob because the central locking system wouldn't work and now i have no ignition or anything
Problem added: Mar 12, 2022 (2 years ago)
Sounds like your car battery is flat Either try a jump start , testing battery voltage , charge or replace battery if needed
Answered Mar 12, 2022 (2 years ago)
Replying to post by whittingehame:
Sounds like your car battery is flat Either try a jump start , testing battery voltage , charge or replace battery if needed
Thanks for the reply, First thing i did was test the battery, then jumped off another battery with the negative on the marina disconnected. No joy I have also tested all fuses for continuity all OK.
Answered Mar 13, 2022 (2 years ago)
What is battery voltage on testing ? Never heard or known of anyone doing that before " with the negative on the marina disconnected. "
Answered Mar 13, 2022 (2 years ago)
Replying to post by whittingehame:
What is battery voltage on testing ? Never heard or known of anyone doing that before " with the negative on the marina disconnected. "
The idea of disconnecting the negative was to isolate the meriva battery
Answered Mar 13, 2022 (2 years ago)
" The idea of disconnecting the negative was to isolate the meriva battery " Crazy !!!

Again , what is battery voltage ?
Answered Mar 13, 2022 (2 years ago)
13v but unable to put battery under load. Which is why I isolated the battery. Not crazy according to a mechanic friend.
Answered Mar 13, 2022 (2 years ago)
A fully-charged 12-volt battery, allowed to “rest” for a few hours (or days) with no load being drawn from it (or charge going to it), will balance out its charge and measure about 12.6 volts between terminals. Hope you and your " mechanic " get it fixed .
Answered Mar 13, 2022 (2 years ago)

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