Electronic Locking Differential (ELD) System
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The Electronic Locking Differential (ELD) system consists of the following components:
- ELD field coil, located at the rear differential
- Rear differential
- MSS (unique for ELD equipped vehicles, the ELD switch is integrated with the MSS), located on instrument panel.
The optional ELD system allows the operator to lock the rear differential side gears on slippery and/or off road surfaces. ELD operation is requested by pulling out (4WD electronic shift vehicles) or turning the MSS to the on position (4WD manual shift and 2WD vehicles).
The operator can engage the ELD per the charts below:
ELD Engagement Speeds -- 4WD Vehicles
| Switch Position | Engage | Disengage | Re-engage |
|---|---|---|---|
| 2H | 30 km/h (19 mph) a | 40 km/h (25 mph) | 30 km/h (19 mph)a |
| 4H | 30 km/h (19 mph)a | 40 km/h (25 mph) | 30 km/h (19 mph)a |
| 4L | 90 km/h (56 mph)a | 100 km/h (62 mph) | 90 km/h (56 mph)a |
a. The ELD system engages/re-engages at or below the speed noted.
ELD Engagement Speeds --2WD Vehicles
| Switch Position | Engage | Disengage | Re-engage |
|---|---|---|---|
| Off | N/A | N/A | N/A |
| On | 30 km/h (19 mph) a | 40 km/h (25 mph) | 30 km/h (19 mph)a |
a. The ELD system engages/re-engages at or below the speed noted.