Lighting Repair for Mercedes Viano

Description

I need a professional to diagnose and fix lighting issues on a 2004 Mercedes Viano. The problems are as follows: - The parking light and rear light do not work. - The right side turn signals are not functioning. - The brake lights work, indicating it might not be a ground issue. Possible causes include damaged wiring, a burned transistor in the SAM unit, or an error within the SAM unit itself. Previous diagnostics have yielded no results, and I may require specialized Mercedes diagnostics for further assistance.