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The Ford Electronic Locking Differential (ELD) is a device housed in the rear axle that allows both rear wheels to turn at the same speed, providing additional traction for off-road conditions like mud, rocks, and sand. It is activated electronically and is designed to be used at low speeds, typically below 20-25 mph, and is not suitable for dry pavement. The ELD is available as an option on certain Ford truck models, such as the F-150 and Super Duty, and is intended to improve performance in challenging terrain. While some users find it beneficial for rock crawling and traction in snow, others consider it unnecessary for daily driving and a waste of money.
Characteristics and Values of the Ford Electric Locker Axle
| Characteristics | Values |
|---|---|
| Name | Electronic Locking Differential (ELD) |
| Mechanism | Allows both rear wheels to turn at the same speed |
| Use | Provides additional traction in mud, rocks, sand, snow, or any off-road condition where maximum traction is needed |
| Activation | Can be activated electronically and shifted on the fly within the operating speed range |
| Disengagement | Occurs automatically when the vehicle speed exceeds a set value and re-engages when the speed goes below a set value |
| Drive Modes | Not available in 2H |
| Spare Tire | The size of the spare tire can affect system performance |
| Limitations | Not suitable for use on dry pavement or dry, hard-surfaced roads as it can cause excessive noise, vibration, and increased tire wear |
| Reliability | Considered more reliable and long-lasting compared to limited-slip axles |
| Pros | Can lock both wheels for pulling at low speeds; beneficial for rock crawling |
| Cons | Controlled by the computer and automatically shuts off at a certain speed (around 20- 25 mph), limiting its use for higher-speed applications |
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What You'll Learn
The pros and cons of the Ford electric locker axle
The Ford Electronic Locking Axle, also known as the E-locker, is a rear locking differential that maximises traction by distributing torque equally between both rear wheels. This system is particularly useful for off-road driving, such as rock crawling, and can be beneficial for pulling at low speeds.
Pros of the Ford Electric Locker Axle
One of the key advantages of the Ford Electric Locker Axle is its ability to provide increased traction and control in off-road or low-traction conditions. This can be particularly useful when navigating challenging terrain, such as muddy fields or off-road trails, helping to prevent wheel spin and maintain stability.
Another benefit is its longevity. The E-locker is designed to be more reliable over the lifespan of a truck when compared to alternatives like the LSD, which may wear out over time due to abuse or larger tires.
Additionally, the E-locker offers the best of both worlds. On pavement, it functions as a standard open differential, while off-road it provides the traction benefits of a spool.
Cons of the Ford Electric Locker Axle
One of the main drawbacks of the Ford Electric Locker Axle is its speed limitation. The system automatically shuts off at wheel speeds above 20-25 mph, depending on the specific model. This can be inconvenient if you require sustained high speeds, as you would need to manually deactivate the system to exceed this limit.
Another disadvantage is its limited applicability for daily driving. The E-locker is designed for off-road or low-traction situations and may not provide significant benefits for regular, high-speed driving on paved roads.
Furthermore, the E-locker is controlled by the vehicle's computer, which may be seen as a drawback for those who prefer manual control or customisation.
Overall, the Ford Electric Locker Axle offers enhanced traction and control in off-road and low-traction situations, coupled with improved longevity. However, it may not be well-suited for high-speed or daily driving due to its speed limitations and computer-controlled operation.
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When to use the Ford electric locker axle
The Ford Electronic Locking Differential (ELD) is a device housed in the rear axle that allows both rear wheels to turn at the same speed, providing additional traction when your vehicle is stuck. It is designed for off-road use and can be used to get out of small stuff or pull at low speeds.
When stuck in mud, rocks, or sand
The electronic locking differential provides additional traction when your vehicle is stuck in mud, rocks, or sand. It is designed to help in off-road conditions where maximum traction is needed. Engage the ELD to gain the necessary traction to get unstuck.
When using all four-wheel-drive
When using all four-wheel drive, the electronic locking axle can be beneficial. It ensures that all four wheels are putting down power, which can be especially useful when dealing with poor traction conditions.
When rock crawling
The electronic locker is a great option for someone who goes rock crawling in a full-size truck. It provides the necessary traction and control to navigate rocky terrain effectively.
When dealing with snow
In snowy conditions, the electronic locking axle can help gain traction and get your vehicle moving. It can be particularly useful when starting from a stop in deep snow, in conjunction with 4x4 mode.
When navigating difficult terrain
The electronic locking differential can be engaged to help navigate challenging terrain, such as when you're stuck in a ditch or in an off-camber situation. It provides the necessary traction to get your vehicle through these tricky situations.
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How the Ford electric locker axle works
The Ford Electronic Locking Differential (ELD) is a device housed in the rear axle of a vehicle that allows both rear wheels to turn at the same speed, providing additional traction when the vehicle is stuck. This is particularly useful for off-road conditions such as mud, rocks, or sand, where maximum traction is required.
The ELD can be activated electronically and shifted within the operating speed range. It automatically engages at low speeds and when certain drive modes are selected. The system is controlled by a computer, and it automatically shuts off at speeds above 20-25 mph, depending on the vehicle. This feature ensures that both wheels turn at the same speed at lower speeds, providing better control and traction.
The ELD is not suitable for use on dry pavement or hard surfaces. Using it on dry pavement can cause damage to the locker, and operating it on hard surfaces can produce excessive noise, vibration, and increased tire wear. It is important to note that the ELD is not a replacement for 4-wheel drive and is not available in 2H mode.
The ELD system includes a Mode Select Switch (MSS) located on the instrument panel. When activated, an ELD icon is displayed in the message center, indicating that the system is engaged. The Advance Trac system can also take over control of the ELD and disable it during driving maneuvers if necessary.
The Ford ELD provides benefits for both on-road and off-road driving. On-road, it functions as a standard open differential, while off-road, it provides the traction benefits of a spool. This gives drivers the best of both worlds, making it a valuable feature for those who frequently drive in challenging conditions.
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Ford electric locker axle vs. other axles
The Ford Electronic Locking Differential (ELD) system, also known as the E-locker or electric locker, is a type of locking differential that offers several advantages over other types of axles, such as open differentials and limited-slip differentials.
One of the key benefits of the Ford electric locker axle is its ability to lock both wheels, providing traction and pulling power at low speeds. This feature is particularly useful for off-road driving, rock crawling, or navigating through mud or small obstacles. With an open differential, both rear tires must have traction for the vehicle to move forward. If one tire loses traction, all the power goes to that tire, and the vehicle may get stuck. While a limited-slip differential can transfer some torque to the non-spinning tire, it may not always engage reliably.
Another advantage of the Ford electric locker axle is its longevity. The E-locker does not have a wearing clutch pack, which means it may outlast a limited-slip differential (LSD) that can wear out over time, especially with heavy use or larger tires.
However, there are also some drawbacks to consider. The E-locker is controlled by the vehicle's computer, and it automatically shuts off at speeds above 20-25 mph, depending on the source. This speed limitation can be inconvenient when trying to maintain wheel speed in muddy conditions or when turning on dry pavement, as engaging the E-locker at higher speeds can cause damage.
Additionally, the Ford electric locker axle may not be available as an option on all vehicle models or configurations. It is typically offered on certain Single Rear Wheel (SRW) models, while limited-slip axles are usually available on Dual Rear Wheel (DRW) vehicles.
In summary, the Ford electric locker axle provides improved traction and pulling power at low speeds, making it ideal for off-road situations. It also offers increased longevity compared to limited-slip alternatives. However, the speed limitations imposed by the computer control system and the potential unavailability on certain models are factors to consider when deciding between the Ford electric locker axle and other axles.
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The longevity of the Ford electric locker axle
The Ford Electronic Locking Differential (ELD) is a device housed in the rear axle of a vehicle that allows both rear wheels to turn at the same speed, providing additional traction when the vehicle is stuck. While it offers excellent functionality for rock crawling or off-road conditions, some users have expressed concerns about its limitations for everyday use.
The E-locker has been praised for its longevity, with the belief that it will be more reliable over the lifespan of a truck compared to alternatives like the LSD, which can wear out over time. This is an important consideration for those who plan to use their vehicles for the long term and want to avoid the hassle and cost of frequent repairs or replacements.
One of the key advantages of the Ford electric locker axle is its ability to provide traction in challenging conditions. When activated, it ensures that both rear wheels turn together, helping the vehicle to navigate through mud, rocks, sand, or any off-road terrain. This feature can be a lifesaver in situations where maximum traction is required, such as when recovering a stuck vehicle.
However, it's important to note that the electric locker axle is not designed for use on dry pavement. Using it on dry, hard surfaces can lead to excessive noise, vibration, and increased tire wear. This is a significant limitation for those who plan to use their vehicles primarily on paved roads, as they may not be able to take full advantage of the E-locker's benefits.
Additionally, the E-locker has certain speed restrictions. It automatically shuts off at speeds above 20-25 mph, depending on the model, which can be inconvenient for those who require sustained high speeds. This feature is designed to prevent damage to the locker, but it may limit the vehicle's performance in certain situations.
Despite these limitations, the Ford electric locker axle has its advantages, especially for off-road enthusiasts and those seeking long-term reliability. Its ability to provide traction and navigate challenging terrain makes it a valuable feature for specific use cases, even if it may not be necessary for daily drivers. Overall, the Ford electric locker axle offers a unique set of benefits that cater to a specific type of driver and usage.
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Frequently asked questions
The electronic locking differential, or ELD, is a device housed in the rear axle that allows both rear wheels to turn at the same speed, providing additional traction. It is meant to be used in mud, rocks, sand, snow, or any off-road condition where you need maximum traction.
One pro of the electric locker axle is that it can lock both wheels for getting out of small stuff and pulling at low speeds. The main con is that it is controlled by a computer and automatically shuts off at speeds over 20-25 mph.
This depends on the user. Some people say it is a waste of money, while others say it is cheap and may make a big difference one day. Some users have said that they have never used it, while others say they use it in snow or to get out of bar ditches.
