Problem rear lights and trunk comand Mercedes CLS 350 Petrol Aut. Year 2005

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Hello My name is Thomas. I have problem with my Mercedes CLS AUT 350 V 6. I ll change the battery in trunk and service batery. When I do that all rear lights and trunk comand and analogic clock in dashboard doesn't work. I check all fuses and change it all in all tre fuse boxes. But the problem with rear light ..etc it's allways there. I'll ask for help please