Working with Smith And Gordon Gill Vehicles: A Practical Guide
The Smith Electric Vehicles line, designed by Gordon Gill, was one of those projects that looked incredible on paper and struggled immensely in the real world. If you are dealing with one of these now, you probably already know the basics. What follows is the stuff that actually matters when you are trying to keep one running. These were urban delivery vans and light commercial EVs built mainly between 2006 and 2015. The Smith Delta and the Transit Connect replacement style van were the main models. Gordon Gill's design team gave them a distinctive forward-control cab-over shape that maximized interior volume. Underneath, they used lithium iron phosphate batteries in most configurations, which was actually a decent choice for thermal stability, even if the energy density left something to be desired. The drivetrain was a direct-drive AC motor with a single-speed reducer. No traditional gearbox. That simplifies maintenance but means you are stuck with whatever torque curve the motor provides. The vehicle management system, the VMS, was proprietary. This is where things get complicated.
The Battery Management System Quirks
The BMS on these vehicles was never publicly documented in detail, and that has caused no end of problems for independent mechanics. I spent three days once trying to figure out why a Delta was throwing a consistent cell imbalance fault on a specific truck. The issue traced back to a single sagging cell in module three, but the BMS was reporting it as a communication error rather than a cell-level problem. The workaround was to isolate the faulty module, run a controlled cycle on the remaining modules, and reset the balancing routine through the service menu. You need a proper diagnostic interface for that, not a generic OBD2 scanner. Here is something most people miss: the lithium iron phosphate chemistry in these batteries makes state of charge estimation notoriously difficult. The voltage curve is extremely flat across most of the discharge range. That means the BMS has to rely heavily on coulomb counting, and any sensor drift compounds over time. I have seen several of these vans report anywhere from fifteen to twenty-five percent variance between the dashboard SOC and what a standalone battery analyzer measured. If you are planning to use one as a daily driver, calibrate the SOC monthly by doing a full charge and a full discharge cycle under normal load conditions.
Charging Infrastructure Considerations
Most Smith vans came equipped with a standard Type 1 charging port. They supported both Level 1 and Level 2 charging. The onboard charger was typically a 3.3 kilowatt unit, which means a complete charge from empty on a 240-volt circuit takes roughly eight to ten hours depending on the battery pack configuration. Some later models had optional faster onboard chargers, but those are rare. The real issue I ran into repeatedly was the charging temperature management. These batteries do not like charging below five degrees Celsius, and the BMS will refuse to accept a charge if the pack temperature is too low. In practice, that meant in winter mornings the van would sit at zero charge until the battery warmed up, which could take an hour or more depending on how cold it got overnight. The workaround I ended up using was plugging the van in before it got cold, letting the thermal management system run on grid power while the vehicle was still warm from operation, then letting it finish the charge cycle.
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Common Failure Points
The DC-DC converter on these vehicles is a known weak point. It steps down the high-voltage battery voltage to power the 12-volt auxiliary systems. When it fails, you lose power steering assist, brake boost assistance electronics, and all the low-voltage accessories. I replaced one on a 2011 model after about 67,000 miles. The failure mode was intermittent loss of the 12-volt rail under load, which would cause the vehicle to enter a limp mode and refuse to drive. The fix was replacing the unit, but sourcing a replacement has become increasingly difficult since the company ceased operations. The regen braking calibration is another thing to be aware of. The system is not particularly strong, and the feel is inconsistent between different model years. Some drivers find the transition between regen and friction braking to be jarring. There is no user-adjustable Regen level in the standard setup, so if this bothers you, you are basically stuck with what the factory programmed unless you modify the control software, which is not trivial given the proprietary nature of the system.
Maintenance Realities
Compared to an internal combustion engine van, these require significantly less routine maintenance. No oil changes, no transmission fluid, no spark plugs, no timing belts. The brakes last substantially longer thanks to the regen system. But the things that can go wrong are harder and more expensive to fix. A battery pack replacement, when it becomes necessary, can run well over thirty thousand pounds depending on availability. The individual modules are somewhat serviceable, which can reduce costs if you catch problems early. Software updates for the motor controller and BMS are essentially impossible to obtain at this point. The company is defunct, and the servers that hosted the update files are offline. If you see an error code that a software flash might resolve, you are out of luck unless you can find someone who has archived the firmware.
Where These Vehicles Actually Work
The Smith Electric vans were designed for stop-and-go urban delivery, which is exactly what they are best at. The regen braking shines in that environment, and the instant torque is useful for constant acceleration and deceleration. Range is modest, usually between eighty and one hundred twenty miles depending on the pack configuration and payload. If your operations stay within that radius and you have controlled charging infrastructure, these can be reasonable vehicles. Outside of that, the limitations become pronounced quickly. The parts situation continues to deteriorate. The company liquidated its assets years ago, and while some components remain available through secondary markets, others are simply gone. If you are considering acquiring one of these, the first thing I would do is inventory every consumable and wearable part you can find and stock it. Things like the contactors, the pre-charge resistors, and the cabin HVAC compressor relay are all failure points that will eventually need attention.
Diagnosis Tips
Get a proper diagnostic tool. The proprietary Smith diagnostic interface is the only way to access the full range of fault codes and live data. Generic adapters will read generic OBD2 codes but will miss the proprietary DTCs related to the BMS, motor controller, and VMS. There are a few third-party tools that have been developed by specialists in the UK who have reverse-engineered some of the communication protocols, but they are not cheap and they do not cover everything. When troubleshooting electrical gremlins, always check the main high-voltage contactor first. These things cycle hundreds of thousands of times over the vehicle's life, and the contacts degrade. A failing contactor can cause voltage drops that manifest as seemingly unrelated errors across multiple systems. I once had a van that kept throwing random communication faults between modules. Turned out the main contactor was pitted and introducing noise into the CAN bus. Replaced the contactor and the issues disappeared. There is no shortcut around the knowledge gap with these vehicles. They were ahead of their time in some ways and behind in others. The design was sound, but the execution suffered from the same problems that plagued many early-generation commercial EVs: inadequate range for the intended use case, proprietary systems that lock you into specific service channels, and a company that did not survive to support the vehicles long-term. If you can work within their constraints and keep up with maintenance, they are drivable. If you need something that fits a mainstream service model, you will likely be frustrated.
