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Home >> Mercedes Benz >> 2019 >> S450 Base >> Repair and Diagnosis >> General Information >> OEM General Information >> Emergency Equipment, Disability Equipment, Sanitary Equipment, Galley - 222 Chassis >> Maintenance >> Carry Out Self-Test - AP86.10-P-8654-03A

Carry Out Self-Test - AP86.10-P-8654-03A

Model 222 

with code Z07 (B7 armoring on special protection version) 

with code Z25 (Emergency fresh-air system) 

  1. Open flap (1).
  2. Switch electronic ignition lock control unit to position "2" (circuit 15).

    IMPORTANT The self-test of the emergency fresh air system is performed automatically. If the fire extinguishing system is intact, the LED in the emergency fresh air system/fire extinguishing system activation button (2) and the LED in the emergency fresh air system button (3) light up for 6 seconds. The warning buzzer does not sound. The emergency fresh air system is ready for operation. If the emergency fresh air system is defective, the LED in the emergency fresh air system button (3) lights up constantly and the warning buzzer sounds for 6 seconds or the LED in the emergency fresh air system button (3) does not light up. The emergency fresh air system is nonfunctional.

  3. Switch electronic ignition lock control unit to position "0".
  4. Close flap (1).
G15399488Courtesy of MERCEDES-BENZ USA
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