Fendt 0F.1.03 – A038 - ECU, Central Electrical System: Wide vehicle marker lights, left.

Function non-operable. This indicates that the left-hand wide vehicle marker light (clearance light) is not working, which is typically caused by a blown bulb, a damaged LED, an open circuit, or a wiring harness issue preventing power delivery to the light assembly.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario (COM III)
• Fendt 400 Vario (COM III)
• Fendt 700 Vario (COM III)
• Fendt 800 Vario (COM III)
• Fendt 900 Vario (COM III)
• 922 Vario
• 924 Vario
• 927 Vario
• 930 Vario
• 933 Vario
• 936 Vario

1. 1

   Inspect the left wide vehicle marker light assembly for physical damage, water ingress, or a blown bulb.

2. 2

   Check the wiring harness and connectors leading to the left marker light for corrosion, breaks, or loose connections (refer to Circuit Diagram Sheet 14).

3. 3

   Use a multimeter to verify if voltage is reaching the connector at the light assembly when the lights are switched on.

4. 4

   Verify the output directly from the A038 Central Electrical System ECU to rule out a module failure if there is no power at the connector.

1. 1

   Safely park the tractor, engage the parking brake, and turn off the ignition.

2. 2

   Access the left wide vehicle marker light assembly on the cab or fender.

3. 3

   Disconnect the electrical connector from the back of the light.

4. 4

   If the bulb is blown, replace the bulb. If it is a sealed LED unit or the housing is damaged, unbolt the mounting hardware and remove the entire assembly.

5. 5

   If the light unit is functional but power is missing, repair the damaged section of the wiring harness or clean/replace any corroded pins in the connector.

6. 6

   Install the new bulb or replacement marker light assembly and reconnect the wiring harness.

7. 7

   Turn on the ignition and activate the lighting circuit to verify the left marker light now illuminates.

8. 8

   Access the Vario terminal diagnostics menu to clear the stored 0F.1.03 (E055) fault code from the tractor's memory.