Shift Interlock: Testing and Inspection

Checking/Adjusting Interlock/Shiftlock Function
Adjusting interlock cable: This task is described in the repair instructions under"Adjusting interlock cable (Steptronic)".

Checking interlock function:
a) Ignition key removed or in ignition key position "zero": Selector lever must not move from "P" position.
b) Turn ignition key to "ignition" position, press foot brake: It must be possible to select all selector lever positions.
c) Selecting all selector lever positions except "P": In none of these positions should it be possible to turn the ignition key back to the "zero" position and remove it.
d) Move selector lever to "P" position: It must possible to turn the ignition key back to the "zero" position and remove it.

Checking shift lock function:
a) Ignition on,
Move selector lever to position "P" or "N", operate foot brake:
Selector lever must unlock.
b) Start engine, operate foot brake, engine speed greater than 2500 rpm:
Selector lever must be locked in position "P" or "N".
c) Ignition on,
Shift selector lever to position "R", foot brake released:
In event of brisk shifting from position "R" to "D" and from "D" to "R", the selector lever must not be locked when position "N" is exceeded.
If it remains for more than approximately 0.5 sees. in position "N", the selector lever must be locked.
d) Selector lever may only be locked in position "P" or "N".
e) Road speed greater than 5 km/h:
The selector lever must not be locked off.

Checking/Adjusting Interlock/Shiftlock Function
Adjusting interlock (with Steptronic):

Move selector lever (1) to "P" position (front stop of shifting gate).

Release screw (2).

The cable (3) must remain easily movable axially in the holder (4).

Move ignition key to "zero" position and remove.

Press interlock lever (5) downwards as far as it will go.

Tighten down screw (2).
Tightening torque, 2516 5AZ.

Checking interlock function:
a) Turn ignition key to "ignition" position and then turn back to "zero" position and remove ignition key:
It should not be possible for the selector lever to be moved from the "P" position.
Interlock lever must rest on selector lever.

b) Turn ignition key to "ignition" position, press foot brake:
It must be possible to select all selector lever positions.

c) Selecting all selector lever positions except "P":
In none of these positions should it be possible to turn the ignition key back to the "zero" position and remove it.

d) Move selector lever to "P" position:
It must possible to turn the ignition key back to the "zero" position and remove it.

Checking shift lock function:
a) Ignition on, selector lever in "P" or "N" position, press brake pedal:
selector lever must unlock.

b) Start engine, press brake pedal, engine speed greater than 2500 rpm:
selector lever must be locked in "P" or "N" position.

c) Ignition on, move selector lever to "R" position, foot brake released:
In event of brisk shifting from position "R" to "OD and from "D" to "R", the selector lever must not be locked when position "N" is exceeded.
If it remains for more than approximately 0.5 secs. in position "N", the selector lever must be locked.

d) Selector lever may only be locked in position "P" or "N".

e) Driving speed greater than 5 km/h:
The selector lever must not be locked off.