New Holland ARMRE 18068 – Armrest Module: EHR 3 lever implausibility error

The electronic signal coming from the Electro-Hydraulic Remote (EHR) control lever #3 is implausible. The system is detecting conflicting, out-of-range, or erratic voltage signals from the lever's internal sensors (potentiometers), meaning the controller cannot accurately determine the lever's physical position (extend, retract, or neutral).

• T6 Series
• T7 Series
• T8 Series
• T9 Series

1. 1

   Check EHR lever #3 for physical damage, sticking, or debris preventing smooth movement.

2. 2

   Inspect the wiring harness and the electrical connector at the base of the EHR 3 lever inside the armrest for loose pins, corrosion, or wire chafing.

3. 3

   Enter the tractor's H-Menu (specifically the H9 menu for switch and sensor tests) or use the diagnostic display to monitor the live voltage/potentiometer readings of the EHR 3 lever as it moves. Look for dead spots or erratic voltage jumps.

4. 4

   Swap the EHR 3 lever with an adjacent, known-good lever (like EHR 1 or 2). If the fault code changes to the new position (e.g., becomes 18066 for EHR 1 or 18067 for EHR 2), the lever itself has failed. If the code remains 18068, the issue is in the armrest wiring harness or the Armrest Control Module itself.

1. 1

   Turn off the tractor and disconnect the battery

   to prevent electrical shorts.

2. 2

   Remove the retaining screws and carefully lift the top cover of the electronic armrest console

   to access the EHR control levers.

3. 3

   Locate EHR lever #3 and disconnect its electrical wiring harness connector

   (the OEM lever includes a wire harness and four terminals).

4. 4

   Remove the mounting hardware

   (typically 4 mounting holes/screws) securing the faulty lever to the armrest chassis.

5. 5

   Remove the old lever and install the replacement lever

   securing it with the mounting screws.

6. 6

   Reconnect the electrical harness

   to the new lever.

7. 7

   Reassemble the armrest cover

8. 8

   Reconnect the battery and turn on the tractor

9. 9

   Clear the stored fault codes and perform an EHR lever calibration procedure

   via the tractor's display to ensure the Armrest Module learns the new lever's neutral, extend, and retract limits.