Remove/install electronic ignition switch control unit

AR80.57-P-1000M

Remove/install electronic ignition switch control unit

21.2.12

 

Removal/installation

 Danger!

Risk of explosion caused by escaping oxyhydrogen gas. Risk of injury caused by caustic burns to eyes, skin and mucous membranes from battery electrolyte (contains diluted sulfuric acid) or metal spatter due to short circuit. Risk of burn injuries caused by short circuit. Risk of poisoning caused by swallowing battery electrolyte (contains diluted sulfuric acid) or absorption of lead over the skin or orifices

No fire, sparks, open flames or smoking.

Wear acid-resistant gloves and clothing and safety glasses with side guards.

Do not place any conductive objects on the battery and avoid any short circuit from battery positive to ground.

Only fill liquid battery electrolyte (diluted sulfuric acid) into suitable and appropriately marked containers.

AS54.10-Z-0001-01A

1

Disconnect battery ground cable

AR54.10-P-0003I



Notes on battery

All models

AH54.10-P-0001-01A

2

Remove cover on center console

Model 215

AR68.20-P-2350N

Model 220 up to 31.8.02

AR68.20-P-2350M

3

Remove operating and display unit with control unit

Model 220 up to 31.8.02 with CODE (352a) COMAND operating and display system

AR82.85-P-7472I

Model 220 as of 1.9.02

AR82.85-P-1000M

4

Move selector lever to position "P"

5

Remove electronic ignition key

6

Unscrew rosette (1) with special tool



*210589000700

7

Remove electronic ignition switch (N73) toward rear and remove through cover opening for center console.

8

Remove shift-lock control cable (2) from electronic ignition switch (N73)

9

Disconnect electrical connectors (3) from electronic ignition switch (N73)

10

Install in the reverse order

 Installation: When replacing the electronic ignition switch (N73) program according to programming instructions included in the programming station