2018 40kw Leaf Parking Pawl?!

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Richierich37

New member
Joined
Jun 30, 2022
Messages
1
Hi guys,

Does anyone know if you can adjust the parking pawl in the reduction box? My understanding is that it’s operated by a motor that sits on top of it but I’m sure mine is catch the cog when driving as sometimes it makes a catching noise that speeds up as I accelerate. Any help appreciated………
 
Do you have any warning lights on the dash? Any Diagnostic Trouble Codes DTCs?

If it is like earlier models, there is an actuator motor with dual windings, dual angle sensors (hall sensors), and an encoder. The controller is a so-called smart box with position learning for the Park position, and a multitude of DTCs and diagnostics tests in the FSM.

Without DTCs available, the first thing would be to check for corrosion or looseness in all the connectors, and check the wiring (rodent damage).

If you are a diy sort of guy then you might remove the mounting bolts for the actuator to lift it off of the splined shaft to access the manual rod, and rotate it by hand to see if there is any CCW travel available to back it off further. The Park position (locked) is learned by noting the encoder when the motor stalls; and then for Driving back it off nnn encoder counts to the unlocked position. Maybe the encoder is dropping counts and not backing out of the way far enough. An oscilloscope would help in troubleshooting to monitor the encoder.

Don't know if the encoder is a separately replaceable item, but is the most likely culprit after connectors and wiring (i've had to replace many encoders in CNC and machine tool applications).

The FSM "repair" is to replace the gearbox if there is an actuator fault. Good luck and let us know what you find.

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