Mercedes-Benz ML320. Service manual - part 207

ignition key position Ignition "ON" when the brake pedal is depressed and therefore when the brake lamp 
switch (S9/1) is actuated and when selector lever position "P" is recognized. 

The R/P locking magnet (89) releases the selector lever thus allowing the selector lever to be moved away from 
position "P". 

Parking Lock, Location/Task/Design/Function - See PARK PAWL, 
LOCATION/TASK/DESIGN/FUNCTION. 

Ignition Lock Interlock 

Operation 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

Fig. 163: Ignition Lock Interlock 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The mechanism of the ignition lock interlock connects the selector lever of the floor shift with the ETC control 
module (N73). See Fig. 163. It prevents the transmitter key (A8/1) from being withdrawn when the selector 
lever is not at position "P". 

When the parking lock is not engaged (selector lever position "D", "R", "N"), the locking valve (60) locks the 
locking cam (61). The compression spring (62) only pulls the locking valve (60) away from the locking cam 
(61) in selector lever position "P". The transmitter key (A8/1) can now be turned to position "0" and removed 
from the ignition. 

Parking Lock, Location/Task/Design/Function 
 
See PARK PAWL, LOCATION/TASK/DESIGN/FUNCTION.  

Function Of Shift lock Override 

Transmission with touch shift 722.6 in MODEL 163 

Operation 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me 

 

Fig. 164: Function Of Shift Lock Override 
Courtesy of MERCEDES-BENZ OF NORTH AMERICA. 

If it is not possible to engage a drive position from selector lever position "P" due to a mechanical or 
electrical/electronic fault, the selector lever position "P" lock can be released using the shift lock override 
function. See Fig. 164. 

To do this a suitable tool must be guided through the flap (95) onto the web (90a) and the web pressed gently 
downwards (arrow). The lock lever (90) releases the selector lever. The selector lever can be moved from 

 

2001 Mercedes-Benz ML320 

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

  

me