Socketed Simpson & Partners EV chargers have a built-in motor lock that secures the charging cable during use. This motor-driven locking pin ensures safety by preventing the cable from being removed while the car is charging.

You can also enable Tethered Mode in the Simpson & Partners app to keep the cable permanently locked into the charger.
Occasionally, the motor lock may become stuck—either locking the cable in place, or preventing a new cable from being inserted.

Follow the steps below to reset the motor lock and restore normal operation.

What Causes This?

• Locking pin stuck in the extended (locked) or retracted (unlocked) position
• Power interruption during a charging session
• App or software miscommunication
• Mechanical resistance in the locking motor

How to Fix It

1. Power Cycle the Charger

Resetting the charger’s power can return the lock to its default unlocked state.

Steps:

1. Turn off the charger at the main isolator switch or circuit breaker
2. Wait for 10 seconds
3. Turn the charger back on

During startup (for about 5 seconds), the motor lock will automatically retract, allowing you to insert or remove the cable.

2. Use the App to Toggle the Motor Lock

You can use the Simpson & Partners app to manually activate or reset the lock.

Steps:

1. Open the Simpson & Partners app
2. Locate the “Cable Locked” toggle/button on the home screen
3. Press it a few times to activate and deactivate the motor lock

You should hear the motor operate. After this, the lock should release and allow you to remove or insert the cable.

Summary

The cable locking mechanism is an important safety feature, but it can occasionally get stuck. Resetting the charger power or toggling the lock in the app usually resolves the issue. If it continues, contact Simpson & Partners support for further help.

‍