[diro]

Low battery voltage slowly kills CEM in these cars. New battery will not solve a problem as I mention before.
Having immo issues a message would come up on the dash screen.
There is option in vida to check live data of the CEM like immo, engine crank etc.
I cant remember now but if I am not wrong CEM live data shows "starting initiated" when you turn a key to crank the engine. If no crank - it 99% CEM problem. Random start are typical symptoms for these cars when CEM starts failing.
To solve a problem you need new CEM and software upload by dealer - this costs mega money.
Alternatively a donor CEM and transfer all data from original one by a person who has special knowledge and equipment. Donor and original CEM numbers must match