The 2002 Volvo VNL has 5 recalls, the most serious being a steering drag link that can separate at the ball socket and cause a complete and sudden loss of steering control.
Water intrusion is a separate concern: if moisture reaches the chassis-mounted electrical inverter through its wiring harness, the inverter can short out and catch fire. The bunk lamp issue is related to both of these fire risks. When the sleeper bunk is raised into its stored position, an object left on the bunk can press against the lamp and switch it on. With airflow to the lamp restricted, the lamp and the object in contact with it can smolder or smoke, creating a fire risk inside the cab. On the structural side, the upper side window in the sleeper section can separate from the sliding track mechanism if the window is open. If that happens, the glass panel can detach from the frame and become a projectile hazard to other vehicles or people nearby.