A high-quality workshop manual for the W638 includes deep-level technical data often unavailable in standard owner's handbooks:
Exact measurements for engine oil, cooling system volume, and fuel tank capacity . mercedes vito w638 workshop manual exclusive
Look for a manual that explicitly states "W638" in the filename and includes a file named Wiring_Tree_638.pdf or ETM_638.pdf . A high-quality workshop manual for the W638 includes
A more portable alternative covering common repair tasks for models manufactured between 2000 and 2003. 2. Key Technical Specifications (W638) Production Years 1996 – 2003 Common Engines cooling system volume