What was recalled
The Consumer Product Safety Commission (CPSC) has issued a recall affecting specific models of adult tricycles manufactured by TerraTrike. This action, announced on December 18, 2018, targets a particular configuration of their popular recumbent pedal-powered trikes. Specifically, the recall involves the yellow TerraTrike Rambler Electrical Vehicle Option (E.V.O.) models. These are not standard tricycles; they are recumbent vehicles featuring an electric assist wheel designed to help riders navigate hills or cover longer distances with less physical effort. The distinctive yellow color of the frame is a key visual identifier for this specific batch, making it easier for owners to spot their vehicle among other TerraTrike models that may not be affected.
To ensure you can accurately identify whether your trike is part of this recall, it is important to understand the physical layout and branding details of the recalled units. The recalled trikes are characterized by a unique wheel configuration: they have two wheels positioned in the front for stability and one wheel in the back. The rear wheel is equipped with a large black hub motor, which is the source of the electric assist. This design places the primary mechanical components at the rear, but the issue lies in the sensor technology integrated into that wheel assembly.
Verification of the model requires checking specific labels and stamps on the frame. You should look for the brand name "Terra Trike" printed clearly on the front of the back rest area. Additionally, the model designation "Rambler E.V.O." will be located on the front outrigger tube, which is the structural component that connects to the front left wheel. This labeling is crucial because other TerraTrike models with similar appearances may have different safety systems and are not included in this recall.
The most definitive way to confirm if your trike is included is by checking the serial number. The serial numbers for the recalled units are listed on the firm's website at www.terratrike.com. Physically, these serial numbers can be found in two places on the vehicle: first, under the main tube on a barcoded sticker located near the rear wheel, and second, stamped directly into the head (vertical) tube of the outrigger. If your trike matches the yellow Rambler E.V.O. description and its serial number appears on the official list, it is part of this recall. The CPSC has not released the total number of units sold in this batch, but the scope is defined by these specific model identifiers and serial ranges.
The hazard, explained
At the heart of this recall is a specific mechanical and electronic failure within the electric assist system of certain TerraTrike recumbent tricycles. To understand why this is dangerous, it helps to look at how these vehicles are designed to work under normal conditions. The recalled models feature an electric assist wheel located in the rear hub motor. This system relies on a component called a "torque sensor," which is essentially a sophisticated gauge that measures how hard you are pushing down on the pedals. Its job is simple and vital: it detects your effort and signals the motor to provide a proportional amount of power to help you move forward. When you pedal, the sensor reads the force; when you stop pedaling, the sensor should register zero effort, causing the electric assist to shut off immediately.
The problem identified in this recall is that the torque sensor can fail in a way that causes it to "activate unexpectedly." In plain terms, the sensor sends a false signal to the motor, telling it that you are pedaling with significant force when you are actually not. Because the trike’s control system trusts this signal, it engages the large black hub motor and propels the vehicle forward with power, even though your feet are stationary on the pedals. This creates a situation where the tricycle moves without any physical input from the rider. For a recumbent tricycle like the Rambler E.V.O., which has two wheels in the front and one in the back, this sudden, uncommanded movement can be particularly destabilizing because of the vehicle's low center of gravity and specific steering geometry.
The danger arises from the disconnect between what your body expects to happen and what the machine actually does. When you are coasting or resting on a recumbent trike, you anticipate slowing down naturally due to friction and air resistance. If the motor suddenly kicks in and pushes the bike forward, it can jerk the vehicle out of its natural path. This unexpected acceleration can cause you to lose control of the handlebars or become disoriented about which direction the trike is moving. Since recumbent trikes are often used for leisurely rides on paved paths, parks, or neighborhood streets, a sudden lurch can lead to a crash into obstacles, other pedestrians, or simply a loss of balance that results in injury. While the manufacturer has currently received five reports of this sensor activating while not pedaling, and no injuries have been reported to date, the potential for harm remains real because the rider has no physical way to stop the electric power once it is falsely engaged.
It is important to distinguish this issue from a general battery malfunction. This is not about the trike turning on randomly at rest, but rather about the sensor misinterpreting the state of motion while you are riding or coasting. The "power forward" aspect means the vehicle gains speed autonomously. In cycling dynamics, any unexpected change in velocity can compromise stability. If you are navigating a slight curve or approaching an intersection, an uncommanded surge of power can throw off your steering input, potentially leading to a fall or collision. This is why the recall treats this as a significant safety hazard requiring immediate cessation of use until the speed sensor is replaced and the software is updated to correct the sensor's logic.
Who is most at risk
The individuals most immediately vulnerable to the hazards associated with this TerraTrike recall are those who currently own or actively ride the specific model of recumbent pedal-powered trike described in the official notice. This includes anyone who has purchased a yellow TerraTrike Rambler Electrical Vehicle Option (E.V.O.) equipped with an electric assist wheel. While the recall notice does not specify demographic data regarding the age or physical condition of existing owners, the nature of this vehicle and its mechanical failure mode suggests that certain groups may face heightened risks depending on their riding habits and environment.
At the core of the risk is the unexpected activation of the torque sensor in the wheel. This defect causes the trike to power forward without the rider pedaling. For any rider, this sudden, uncommanded acceleration can be startling and difficult to counteract instantly. However, the severity of the potential injury depends heavily on the physical capabilities and reaction times of the user. Recumbent tricycles are often chosen by individuals who may have balance issues, limited leg strength, or joint pain that makes traditional upright bicycles challenging. Consequently, a significant portion of this product’s user base likely includes older adults or those with mobility limitations.
For these users, the risk is compounded by two factors: stability and reaction time. Because the trike has two wheels in the front and one in the back, it relies on precise control to maintain balance, especially at low speeds or when starting from a stop. An unexpected surge of power can disrupt this delicate equilibrium before the rider’s muscles have time to react. If the trike jerks forward while the rider is seated and relaxed, they may not be prepared to grip the handlebars firmly enough to steer away from obstacles or maintain their seat position. This could lead to a fall, potentially resulting in fractures, head injuries, or other trauma that is particularly dangerous for seniors or those with osteoporosis.
Furthermore, the risk extends beyond just physical vulnerability. Riders who use these trikes for therapeutic exercise or daily transportation may be less experienced in handling electrical assist systems compared to professional cyclists. The surprise element of a motor activating while "not pedaling" creates a cognitive shock. In high-traffic areas, near curbs, or on uneven pavement, even a few seconds of uncontrolled movement can lead to a crash. Therefore, anyone who relies on this trike for independent mobility is at risk not only from the mechanical failure itself but from the secondary consequences of losing control in public spaces.
- Owners of Yellow TerraTrike Rambler E.V.O. Models: Specifically those with the large black hub motor in the rear wheel and the "Terra Trike" logo on the back rest.
- Riders with Reduced Reaction Times: Older adults or individuals with neurological conditions who may need more time to process sudden changes in vehicle behavior.
- Users in Unpredictable Environments: Those who ride near traffic, steep slopes, or hard surfaces where a sudden forward lurch could lead to severe impact injuries.
While the Consumer Product Safety Commission reports no injuries to date among the five reported incidents of sensor activation, this does not mean the risk is negligible. It simply means that in those specific instances, the riders were able to manage the situation or occurred in settings where a fall did not result in injury. The potential for harm remains real for any user who encounters this defect, particularly if they are caught off guard by the sudden power surge.
How to tell if you have the recalled item
If you own a TerraTrike recumbent pedal-powered trike, particularly one equipped with an electric assist feature, it is important to verify whether your specific unit is part of this recall. The Consumer Product Safety Commission (CPSC) has identified a specific range of vehicles that are affected, and identifying them requires looking at several distinct physical characteristics. First, you should check the color and model name. This recall specifically involves yellow TerraTrike Rambler Electrical Vehicle Option (E.V.O.) models. These are recumbent trikes, meaning they are designed for you to sit in a laid-back position rather than an upright one. A key visual identifier is that these trikes feature two wheels in the front and a single wheel in the back.
To confirm your model, look closely at the frame of the trike. The brand name "Terra Trike" will be printed clearly on the front of the back rest area. More importantly, you need to locate the model name. Look for the text "Rambler E.V.O." which is located on the front outrigger tube. This tube is the structural component that connects to the front left wheel. If your trike does not have this specific labeling or is not yellow, it may not be part of this particular recall, but you should still verify the serial number to be absolutely certain.
The most definitive way to check if your vehicle is included in this recall is by finding its unique serial number. You will need to examine two specific locations on the trike to find this information. First, look under the main tube of the frame, near the rear wheel. There should be a barcoded sticker located there that displays the serial number. Second, check the head (vertical) tube of the outrigger. The serial number is also stamped directly into this metal tube. Once you have the serial number, you must compare it against the list provided by the manufacturer. The firm maintains an official list of affected serial numbers on their website at www.terratrike.com. You can find this information by clicking on “Important Recall” on their homepage.
If your trike matches the description of a yellow Rambler E.V.O. with a large black hub motor on the rear wheel and its serial number appears on the list, you should stop using it immediately. Do not attempt to ride it or test the electric assist function. Instead, contact TerraTrike directly at 800-945-9110 between 8 a.m. and 5 p.m. ET, Monday through Friday, for further instructions on how to proceed with the remedy.
What to do — step by step
If you own a TerraTrike Rambler Electrical Vehicle Option (E.V.O.), the most important thing you can do right now is to stop using the vehicle immediately. This is not a situation where you should "wait and see" or try to ride it one more time before taking action. The hazard involves the torque sensor in the wheel activating unexpectedly, which can cause the trike to power forward without you pedaling. Because this can happen while you are trying to start, stop, or simply balance on the trike, continuing to use it poses a significant risk of a crash and subsequent injury. Please keep the trike parked in a garage, shed, or any secure location where no one, especially children or pets, can accidentally activate it. Once you have secured the vehicle, your next step is to arrange for its return. The official remedy provided by the manufacturer is not a mail-in repair but a direct return to the point of purchase. You should take the recalled trike back to the store where you originally bought it. When you go to the store, explain that you have a TerraTrike Rambler E.V.O. subject to the December 18, 2018, CPSC recall. The retailer is responsible for processing this return and providing you with the necessary support. Do not attempt to ship the trike yourself unless the store specifically instructs you to do so, as shipping large recumbent trikes can be complex and costly without proper authorization. At the place of purchase, you will receive two specific fixes at no cost to you. First, the retailer will install a free speed sensor in the wheel assembly. This hardware upgrade is designed to replace or supplement the faulty torque sensor mechanism that was causing the unexpected power activation. Second, your trike will receive a software upgrade. This update works in tandem with the new sensor to ensure the electric assist functions correctly and safely, eliminating the risk of the trike jerking forward unexpectedly. Both of these services are provided for free as part of the recall remedy, so you should not be charged for parts or labor. If you need more information before visiting the store, or if you encounter any issues with the return process, you can contact TerraTrike directly. Call them at 800-945-9110 between 8 a.m. and 5 p.m. ET, Monday through Friday. Alternatively, visit www.terratrike.com and click on “Important Recall” for additional details. While five reports of the sensor activating have been received, no injuries have been reported so far, but taking these steps ensures that your specific vehicle is made safe before any potential incident occurs. By following these steps promptly, you ensure that your recumbent trike remains a reliable and safe mode of transportation rather than a hazard.Your refund, repair, or replacement options
If you own one of the recalled TerraTrike Rambler Electrical Vehicle Option (E.V.O.) recumbent trikes, the good news is that the company has established a clear and accessible remedy to resolve the issue at no cost to you. The primary course of action recommended by both the Consumer Product Safety Commission (CPSC) and TerraTrike is not to seek a cash refund or a brand-new vehicle, but rather to have the specific defective component corrected. Consumers are instructed to immediately stop using the recalled trikes and return them to the place of purchase. From there, you will receive a free installation of a speed sensor along with a necessary software upgrade. This approach is designed to address the root cause of the hazard—the faulty torque sensor in the wheel—without requiring you to purchase a replacement unit, making it a practical and financially sensible solution for most owners.
The logic behind this remedy is straightforward: the issue lies in the electronic interaction between the pedal-assist system and the hub motor. By installing a speed sensor and updating the software, TerraTrike aims to recalibrate how the trike interprets your pedaling input, thereby preventing the unexpected power surges that have been reported. Because the fix involves both hardware (the sensor) and software (the upgrade), it is best handled through an authorized channel. While the recall notice specifically directs you to return the item to where you bought it, this typically means working with a retailer or dealer who can coordinate with TerraTrike’s technical team. It is important to keep in mind that you do not need to navigate this process alone; TerraTrike has set up dedicated support lines and web pages to guide you through every step.
To initiate the remedy, you have two convenient options for contact. You can call TerraTrike directly at 800-945-9110. Their customer service team is available from 8 a.m. to 5 p.m. Eastern Time, Monday through Friday, which provides ample opportunity to speak with a representative during standard business hours. Alternatively, if you prefer to handle things online, you can visit their official website at www.terratrike.com. Once there, look for the “Important Recall” link, which will provide detailed instructions specific to your model and serial number. When reaching out, have your serial number ready, as it is located under the main tube on a barcoded sticker near the rear wheel or stamped into the head tube of the outrigger. This information will help the support team verify that your specific trike is part of this recall batch.
While the remedy focuses on repair and upgrade, it is worth noting that the recall does not explicitly offer a full refund or replacement trike as a standard option. The emphasis is on correcting the defect so that your existing vehicle can be used safely again. This is common in recalls involving complex electronic components where the core structure of the product remains sound. If you have concerns about whether the repair will fully restore your confidence in the trike, discussing these with the TerraTrike representative during your call or online inquiry is recommended. They can provide additional context on the durability and effectiveness of the new speed sensor installation. Ultimately, by taking this step, you are ensuring that your recumbent trike remains a safe and enjoyable way to get around, free from the risk of unexpected acceleration.
What can happen if you ignore it
When a product recall involves a mechanical or electronic failure in a vehicle, the temptation to simply "keep riding until the repair is convenient" is understandable. Life gets busy, and stopping your daily routine can feel like an inconvenience. However, with the TerraTrike Rambler E.V.O. recumbent trikes, ignoring this notice is not merely about delaying a service appointment; it is about accepting a significant and unpredictable risk to your physical safety. The core of the issue lies in the torque sensor within the electric assist wheel. This component is designed to detect when you are pedaling and activate the motor accordingly. When it malfunctions, it can trigger the motor unexpectedly, causing the trike to lurch forward without any input from you. This is not a minor glitch that might just make the ride feel slightly jerky; it is a loss of control scenario.
The immediate consequence of continuing to use a recalled trike is the potential for a crash. Because the power activation is random and uncontrolled, you may find yourself accelerating while trying to start from a stop, turning a corner, or even simply coasting down a gentle slope. This sudden surge of power can throw off your balance, which is particularly dangerous on a recumbent trike where stability relies heavily on predictable handling. A crash at any speed carries the risk of impact with stationary objects, other vehicles, or pedestrians. While the CPSC has not yet reported any injuries associated with these specific incidents, the nature of the hazard—unexpected propulsion in a heavy vehicle—means that the potential for serious harm is real and present every time the trike is powered on.
Beyond the immediate risk of a fall, there is the psychological toll of riding with uncertainty. You should never have to ride your vehicle while constantly worrying about whether it will suddenly move on its own. This anxiety undermines the very reason many people choose electric assist vehicles: to enjoy freedom and mobility with confidence. By ignoring the recall, you are essentially gambling with that peace of mind. The remedy provided by TerraTrike is straightforward: a free speed sensor installation and software upgrade. These fixes directly address the electronic flaw causing the false positives in the torque sensor. Choosing not to take advantage of this free repair means you are keeping a known defect in your daily life, exposing yourself to avoidable danger for no financial gain. The five reported incidents of unexpected activation serve as a warning that the failure is active and recurring, not an isolated anomaly. Please do not wait for a more severe incident to occur before acting; the best way to ensure your safety is to stop using the trike immediately and return it for the designated fix.
Staying safe: broader tips
When you own a piece of equipment that combines mechanical parts with electrical systems, like an electric-assist tricycle or similar mobility device, your safety depends on a blend of vigilant maintenance and proactive awareness. While specific recalls address known defects in particular batches, general safety for this class of product relies heavily on the integrity of its sensors and software. The hazard described in recent recalls often stems from electronic components that can malfunction over time due to vibration, moisture, or manufacturing variances. Therefore, it is wise to treat your device’s electronics with the same respect you would give to the brakes. Regularly inspecting wiring for fraying, ensuring connectors are dry and secure, and verifying that sensor responses feel natural during low-speed tests can help you catch potential issues before they become dangerous.
Beyond physical inspection, staying informed is your most powerful tool for long-term safety. Manufacturers may update firmware to correct software glitches after a product has left the factory, but these updates are only effective if you know they exist. Make it a habit to periodically check the Consumer Product Safety Commission (CPSC) website or sign up for email alerts from the brands you trust. Many users do not realize that a recall might apply to their specific model years later, or that a voluntary software patch is available to fix a minor glitch that could escalate under certain conditions. By subscribing to these notifications, you ensure that you are never caught off guard by a sudden change in your product’s safety status.
Finally, consider the environment in which you operate your device. Electric-assisted trikes and similar vehicles rely on precise torque sensing to provide smooth power delivery. Factors such as extreme temperatures, heavy mud, or water exposure can interfere with sensor accuracy. Always store your equipment in a dry, temperature-controlled space when not in use, and avoid pushing the limits of the electronics during harsh weather conditions. If you notice any unusual behavior—such as delayed response, sudden surges of power, or inconsistent readings—stop using the device immediately and consult the manufacturer’s support team. Treating your mobility equipment with care and keeping an open line of communication with the maker ensures that you can enjoy its benefits while minimizing risks to yourself and those around you.
- Regular Checks: Inspect sensors and wiring for wear or damage every few months.
- Firmware Updates: Check the manufacturer’s website periodically for software patches that may improve safety.
- Environmental Care: Keep electronic components dry and protected from extreme temperatures to maintain sensor accuracy.
- Stay Informed: Subscribe to CPSC alerts and brand newsletters to catch updates before they become urgent issues.