How to fix electronic steering lock (ESL) failure in the 2014 Mercedes-Benz E-Class (W212)?

Symptoms of ESL Failure

• Ignition does not turn on.
• Steering wheel does not unlock.
• Display shows "Remove Key."

Initial Diagnoses

• Check the car battery. A weak battery can cause ESL issues.
• Try a second key to rule out key fob issues.
• Check for any visible damage or wear on the ESL unit.

Step-by-Step Fix for ESL Failure

1. Disconnect Battery

• Ensure the vehicle is turned off.
• Disconnect the negative terminal of the car battery to avoid any electrical issues during the process.

2. Remove the Steering Column Panels

• Remove the under-dash panel beneath the steering column using a Torx screwdriver.
• Carefully remove any clips holding the panels in place.
• Gently pull the panels out to gain access to the ESL.

3. Access the Electronic Steering Lock (ESL)

• Locate the ESL unit, usually mounted on the steering column.
• Disconnect the electrical connector from the ESL unit.
• Remove the screws or bolts holding the ESL in place, usually Torx screws.

4. Replace the ESL

• Install the new ESL unit by securing it with screws or bolts.
• Reconnect the electrical connector to the ESL.
• Ensure all connections are tight and secure.

5. Reassemble the Steering Column Panels

• Reattach the steering column panels by aligning them properly.
• Secure the panels with screws and clips.
• Ensure all parts are tightly fastened.

6. Reconnect the Battery

• Reconnect the negative terminal of the battery.
• Tighten the terminal to ensure a good connection.

7. Test the System

• Insert the key fob and turn the ignition on.
• Ensure the steering wheel unlocks and the car starts.

Additional Tips

• If the new ESL does not work, it may need to be coded to your vehicle by a professional using specialized diagnostic tools.
• Consider seeking professional help if you are not confident in performing the repair.
• Always follow safety protocols to avoid any accidents or damages.