How do you replace belt on 2003 Mercedes Benz sprinter?

To replace the belt on a 2003 Mercedes Benz Sprinter, first, locate the tensioner pulley and use a wrench or ratchet to relieve tension on the belt. Remove the old belt from the pulleys, taking note of the routing for the new belt. Install the new belt following the routing diagram, ensuring it sits properly on all pulleys. Finally, reapply tension using the tensioner and double-check the belt alignment before starting the engine.