Mercedes-Benz Diagnose 4Matic Issues

The most common reason a 4Matic unavailable warning message comes on a Mercedes-Benz is a faulty steering angle sensor, bad transfer case, or dirty ABS wheel speed sensors.

This is a guide on diagnosing the 4Matic Issue on Mercedes-Benz X156 Cluster using a YOUCANIC Multi-System Scanner. If you are getting 4Matic unavailable on your Mercedes-Benz, you need to read the codes to find out what is wrong.

Other issues, such as a weak battery or defective voltage regulator, can trigger the 4Matic unavailable warning message. You will need to read the fault codes from the 4Matic control unit to find out the issue. For more help, follow the steps in the next section.

What You Will Need to Diagnose 4Matic Problems

• Mercedes-Benz Multi-System Scanner

How to Read 4Matic Codes

1. Connect the OBD-II Scanner to the OBD-II port below the dashboard near the vehicle’s hood release.
2. Insert the key into the ignition switch and turn it to the accessories ON position.
3. Select the model of the vehicle by pressing either Automatically Select or Manually Select.
4. The scanner will show the VIN and Car Model, press ok to continue.
5. Go to the Drive Menu on the scanner and Select AWD – All-Wheel Drive.
6. Select Read Codes and wait for the scanner to load.
7. The scanner will show different fault codes which are causing the 4Matic Issue. Press the down arrow as there may be more than one code. 
8. Write down all the codes.
9. Press the ESC button and select erase codes. Then press ok to erase the stored codes.
10. Drive the car for a few minutes.
11. Select the Read Codes again. Any codes that come back must be addressed before you can permanently clear them.

Once you fix the underlying problem, you can clear the codes, clearing the 4Matic unavailable warning on the instrument cluster.

We hope you find the Mercedes-Benz Diagnose 4Matic Issues guide helpful. Check these troubleshooting and repair guides for more help on your Mercedes-Benz.