1997 MERCEDES-BENZ ML320 automatic transmission

See KICKDOWN SWITCH, LOCATION/TASK/DESIGN/FUNCTION MODEL 163 WITHOUT
TOUCH SHIFT.
Starter Lock-Out Contact, Location/Task/Design/Function

See STARTER LOCK
-OUT CONTACT, LOCATION/TASK/DESIGN/FUNCTION.
Temperature Sensor, Location/Task/Design/Function

See TEMPERATURE SENSOR, LOCATION/TASK/DESIGN/FUNCTION
.
Wheel Speed Sensor, Location/Task/Function

See WHEEL SPEED SENSOR, LOCATION/TASK/FUNCTION
.
Location/Task/Design/Function Of Oil Pump

See LOCATION/TASK/DESIGN/FUNCTION OF OIL PUMP
.
Kickdown Switch, Location/Task/Design/Function Model 163 Without Touch Shift

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:29 PMPage 286 © 2006 Mitchell Repair Information Company, LLC.

Fig. 161: Kickdown Switch
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Kickdown Switch Position

The kickdown switch (S16/6) is located in the footwell behind the accelerator pedal. See Fig. 161
.
Kickdown Switch Task

Influencing the shift program of the electronic transmission control.
Kickdown Switch Design

The kickdown switch (S16/6) consists of a spring-tensioned electrical switch contact.
Kickdown Switch Function


2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:30 PMPage 287 © 2006 Mitchell Repair Information Company, LLC.

When the kick-down switch (S16/6) is operated via the accelerator pedal a signal is passed on to the ETC
control module (N15/3). Based on this information the ETC control module (N15/3) actuates the solenoid
valves so that the upshifts and downshifts take place at higher engine speed.
Shift-Lock Function
Operation
The term shift lock combines the functions which, in addition to the parking brake, offer an additional safeguard
for the vehicle to prevent it moving off unintentionally.
These include the functions of locking the selector lever position "P" and locking the ignition lock as well as the
parking lock in the transmission.
The shift lock function only allows shifting out of selector lever position "P" if the transmitter key (A8/1) has
been turned into the position "Ignition: ON" and the brake pedal is depressed.
In order to ensure that after parking the vehicle the selector lever is shifted into selector lever position "P", the
transmitter key (A8/1) can only be turned towards "0" in this position and removed from the EZS control
module (N73) (ignition lock locking, function).
The vehicle is secured mechanically by blocking the park pawl gear.
In the event of mechanical or electrical/electronic faults it is possible to unlock selector lever position "P"
manually (shift lock override function).
Function Of Locking Of Selector Lever Position "P"

See FUNCTION OF LOCKING OF SELECTOR LEVER POSITION "P"
.
Ignition Lock Locking, Function

See IGNITION LOCK INTERLOCK
.
Function Of Shift Lock Override

See FUNCTION OF SHIFT LOCK OVERRIDE
.
Function Of Locking Of Selector Lever Position "P" (With Touch Shift)
Operation

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:30 PMPage 288 © 2006 Mitchell Repair Information Company, LLC.

Fig. 162: Function Of Locking Of Selector Lever Position "P"
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
One of the functions of the shift lock is to lock the selector lever in position "P". The selector lever is locked
electronically. See Fig. 162
.
The selector lever remains disabled in position "P", if the brake is not operated or there is no power supply to
the electronic selector lever module control module (N15/5) (circuit 87).
The electronic selector lever module control module (N15/5) actuates the R/P lock solenoid valve (89) from the

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:30 PMPage 289 © 2006 Mitchell Repair Information Company, LLC.

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
Saturday, October 02, 2010 3:15:30 PMPage 290 © 2006 Mitchell Repair Information Company, LLC.

Fig. 163: Ignition Lock Interlock

2001 Mercedes-Benz ML320
1998-03 AUTOMATIC TRANSMI SSIONS Complete Transmissions - ML 320 - 722.662
me
Saturday, October 02, 2010 3:15:30 PMPage 291 © 2006 Mitchell Repair Information Company, LLC.

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
Saturday, October 02, 2010 3:15:30 PMPage 292 © 2006 Mitchell Repair Information Company, LLC.

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
Saturday, October 02, 2010 3:15:30 PMPage 293 © 2006 Mitchell Repair Information Company, LLC.