c220 ign key and central locking inop

[bam bam]

Hello Could anyone tell me how to find my fault I went on holiday in my car no probs locked her up and when I returned she would not unlock I used the manual key and door opened but alarm went off tried the ignition and not turning battery voltage good so had to be recovered back home tried spare key but same recovery man checked keys and said they were working ....Help

c220 2003

Please Thanks Bam Bam

 

[DSM10000]

It does not help if you start a new thread on a problem you have already posted on, it may just fragment the responses you get.

It may be a problem with the electronic ignition switch if you have a good battery but the engine is not turning over, they are known to fail. You really need a Star diagnostic session to pin down the fault or faults.