Transmission Park Selector Switch

Transmission Park Selector Switch

• Transmission park selector switch (F305) consists of two microswitches. The two microswitches create the signal that the electronic ignition key removal lock needs to release the key only when the selector lever is in the "P" position.

• The first microswitch is closed when the shift lock solenoid (N110) is not active when the selector lever is in the "P" position (brake pedal not pressed) and also the selector lever emergency release lever below the ashtray is not actuated.

• The second microswitch is closed when the button on selector lever knob e is not actuated in selector lever position "P".

The following points must be observed before replacing the transmission park selector switch:

1. Both microswitches are switched electrically in sequence, that is, both switches must be closed for the ignition key to be removed. Check the microswitch using Guided Fault Finding in the vehicle diagnosis, testing and information system VAS 5051.

2. An electrical test on the microswitch is also possible. If a continuity test is performed with a multi-meter, note that in this case, there is a resistance value of approximately 470 ohms when both switches are closed.

Removing





- Remove the selector mechanism function unit. Refer to => [ Shift Mechanism Function Unit ] Shift Mechanism Function Unit.

- Remove the selector lever. Refer to => [ Selector Lever ] Selector Lever.

- Pry out the pin - A - in the - direction of the arrow - with a screwdriver.

- Remove the first microswitch - B -.

- Disengage the electrical wiring from the tab - arrow C - and remove the microswitch from the selector mechanism.

- Disconnect the connector - D - from the shift lock solenoid (N110).





- Disconnect the connector - E - upward.

- Push the tab - C - in the direction of - arrow 1 -.

- Remove the second microswitch - B - in the direction of - arrow 2 -.

- Disengage the electrical wire at the selector mechanism - arrow A -.

Installing





Install in reverse order, paying attention to the following:

• Lubricate the bearings and the sliding surfaces with poly lubricant (G 052 142 A2).

- Guide the microswitch on the longer electrical wire into the opening under the parking lock button in the selector mechanism.

- Install the selector lever - 1 - from underneath.

• Selector lever in the "S" position (as illustrated).

- Install the microswitch - B - into the selector lever and secure it with the pin - A -.

• The microswitch must lie flush on all sides.

- Attach the electric wire to the tab - arrow C -.

• The pin - A - secure the microswitch - B - inside the selector lever.

• Ignition key removal lock does not function correctly if the microswitch is not inserted correctly or properly secured.

- Secure the electric wire - arrows A - to the selector mechanism as illustrated.





- Install the microswitch - B -.

• Ignition key removal lock does not function correctly if the microswitch is not inserted correctly or properly secured.

- Connect the connector - D - to the shift lock solenoid.

- Install the connector - E - from the top.

- Install the selector lever. Refer to => [ Selector Lever ] Selector Lever.

- Install the selector mechanism function unit. Refer to => [ Shift Mechanism Function Unit ] Shift Mechanism Function Unit.