The Flatbed Requirement: EV Towing Procedures and Risks

Electric vehicles roll into service departments for all sorts of reasons including software glitches, dead 12-volt batteries, collision repairs, and high-voltage concerns. But before any of that work begins, many EVs take a detour to a tow operator’s flatbed. And unlike ICE vehicles, the towing requirements for EVs aren’t simply recommendations. They’re safety precautions that protect the car, the technician, the tow operator, and every component in that high-voltage system.

If you’re a service manager, advisor, or technician working with EVs, understanding why flatbed towing matters and what can go wrong when it’s done incorrectly is essential knowledge. Here we break down safe towing procedures, explain common risks, and highlight the diagnostic steps your shop should follow once the vehicle arrives.

Why EVs Need Flatbed Towing

Most EVs can’t be towed with two wheels on the ground or with their drive wheels spinning freely. Even when the vehicle is set to neutral, that mode doesn’t work the same way it does in traditional vehicles. In most EV platforms, the motor remains directly connected to the drive wheels, which means towing the vehicle can force the motor to rotate, and that creates problems.

Here’s what can go wrong:

• Motor overspeed – When the rotor spins faster than intended, physical damage can occur inside the motor. This damage isn’t always immediate or obvious. Sometimes it shows up later as vibration, noise, or inverter faults that leave technicians puzzled.
• Unintended energy generation – Spinning wheels can cause the motor to act like a generator. This feeds voltage back into the high-voltage system while the control modules are offline. That can damage inverters, fast-charge circuits, or the battery pack itself.
• Damaged reduction gears – Many EV drivetrains rely on reduction gears rather than multi-speed transmissions. These gears need lubrication and precise operating conditions. Forced rotation during towing can result in wear or catastrophic failure.
• Unpredictable contactor behavior – If the system senses unexpected motor rotation, the vehicle may attempt to energize or isolate systems in ways you don’t want.

A flatbed eliminates all these risks by keeping the wheels from spinning altogether. Some EVs allow limited dolly towing under specific OEM instructions, but most manufacturers still recommend or require flatbed transport whenever possible.

Preparing an EV for Towing

Tow truck drivers and service staff need to treat EV towing as a process in itself, not a quick hookup to get it to the shop. Before loading the vehicle, ensure it’s stable, disengaged, and electrically safe.

• Confirm the EV is powered down. Tow truck drivers need to verify that the vehicle is fully off. EVs don’t always power down instantly when the driver walks away. If possible, move the key fob far away from the vehicle so the car doesn’t inadvertently wake up.
• Activate Tow Mode or Transport Mode. Some EVs have a specific setting that releases the parking brake, frees the brake system, or adjusts stability control. Others need to be done manually or by a scan tool if the 12-volt battery is dead.
• Secure the wheels. Wheel straps are preferred over hooks for EVs. Chassis points designed for towing are sometimes limited or not intended for long-distance transport. Wheel straps keep the load stable without risking damage to the underbody, battery pack enclosures, or aero panels.
• Use correct winch attachment points. Many EVs include recovery points behind covers. Attaching a winch hook to an incorrect location can crack cooling lines, distort the battery tray, or damage sensors.

Risks of Improper Towing

Even a short improper tow can cause long-term consequences. Here are the most common risks your shop may see when an EV wasn’t transported correctly:

• Motor and inverter damage – If the drive wheels spun during the tow, the vehicle may arrive with no immediate trouble codes, yet fail later under thermal or electrical stress. This can create expensive warranty claims and confusion to diagnose.
• Battery pack overheating – If regenerative current is pushed back into the battery during a tow, the pack could heat up or trigger internal protection measures. In severe cases, high-voltage fuses can blow, or modules can lock up.
• Parking brake or brake system damage – Dragging an EV with an engaged parking brake is more common than many shops realize, especially if the 12-volt system died before the tow operator arrived. Expect burned brake pads, overheated calipers, or damaged electronic brake actuators.
• Underbody panel damage – EVs have aerodynamic panels that hide high-voltage components, cooling parts, and wiring. Incorrect hook points or poorly positioned dollies can crack the pack shield or its mounting hardware.
• Diagnostic confusion – Improper towing can generate fault patterns that resemble inverter failures, battery isolation issues, or thermal management faults. Without a transparent history, your technicians could be chasing phantom problems for hours.

What Shops Should Do When an EV Arrives

The towing procedure may be complete, but the safety process for the shop is just beginning. Service personnel should assume nothing about the vehicle’s condition and confirm that high-voltage systems are stable before starting diagnosis.

• Assess the 12-volt battery first. Tows often involve a depleted 12-volt battery. Without low-voltage support, the EV’s contactors can’t close, and essential control modules may not boot. Use Midtronics testing equipment to evaluate the battery’s state and recover or replace it if needed.
• Verify HV status. Check the high-voltage isolation status, pack readiness, and contactor state using OEM scan tools or supported diagnostic tools.
• Look for towing-related trouble codes. If the EV was improperly towed, you may see wheel speed sensor mismatches, motor overspeed codes, or inverter current anomalies.
• Inspect underbody panels for damage. Tow straps, hooks, or dollies can damage the pack shield. If the pack enclosure is dented, scratched, or bent, consult OEM safety documentation before continuing.

Communicating Towing Risks to Customers

Most customers simply assume that towing is towing. They don’t understand the risks of dragging an EV behind a truck or allowing the wheels to roll freely. Service advisors should take a moment to explain any concerns discovered during intake.

Here’s a simple way to explain it: “Your EV has to be transported on a flatbed because the motor and drivetrain are always connected to the wheels. If the wheels spin while the car is off, it can damage the high-voltage system. We’re going to check the vehicle over to make sure nothing unusual happened during transport.”

Clear communication like this helps avoid frustration and builds trust by showing that your shop understands EV-specific needs.

Midtronics in EV Workflows

Once an EV arrives at your shop after a tow, the first step toward accurate diagnosis is verifying system readiness. That starts with a healthy 12-volt battery and a stable high-voltage environment. Midtronics EV diagnostic tools give your technicians the confidence to bring an EV online safely, confirm whether any electrical issues were caused during the tow, and guide the next steps in the diagnostic or repair process.

Accurate low-voltage analysis, high-voltage procedures, and safe charging processes all depend on reliable testing equipment. Midtronics tools help service teams reduce comebacks, improve safety, and protect high-value EVs and their components to leave no room for guesswork.

Frequently Asked Questions

Why can’t most EVs be towed with two wheels on the ground like a conventional vehicle?

Because the electric motor stays mechanically connected to the drive wheels even when the vehicle is in neutral. Spinning the wheels forces the motor to rotate, which can cause it to generate voltage that feeds back into the HV system while control modules are offline. This can damage inverters, fast-charge circuits, or the battery pack itself. Flatbed transport eliminates this entirely.

What is Tow Mode and when does it need to be activated?

Tow Mode (sometimes called Transport Mode) releases the parking brake, adjusts stability control, and in some vehicles frees the brake system to allow proper flatbed loading. Not every EV has it, but for those that do, activation usually happens through the instrument cluster menu or an OEM scan tool. If the 12V battery is dead, activation may require jump-starting the 12V system first.

What towing-related damage should a shop check for when an EV arrives?

Look for towing-related trouble codes first, wheel speed sensor mismatches, motor overspeed codes, or inverter current anomalies that suggest the drive wheels rotated during transport. Inspect underbody panels for damage from strap placement or hook points. Assess the 12V battery state. And check the brake system for heat damage if there’s any chance the parking brake was engaged during towing.

How does regenerative braking create risk during improper towing?

If the drive wheels spin during towing, the motor acts as a generator and pushes current back into the HV battery. The battery management system may be offline, unable to regulate this input. In severe cases, the pack can overheat, trigger internal protection measures, or blow high-voltage fuses, none of which show obvious symptoms until the shop tries to bring the vehicle online.

What’s the correct way to winch an EV onto a flatbed if it can’t be driven?

Use the vehicle’s designated recovery points, which are often behind covers at the front and rear. Attaching a winch hook to the wrong location, underbody crossmembers, battery tray edges, or aero panel mounting points, can crack cooling lines, distort the pack shield, or damage sensors. OEM rescue guides and service documentation specify the correct attachment points for each model.

What should service advisors tell customers about EV towing requirements?

Keep it simple: ‘Your EV has to go on a flatbed because the motor is always connected to the wheels. If the wheels spin while the car is off, it can damage expensive components. We’ll check everything over when it arrives to make sure the transport didn’t cause any issues.’ Clear, direct communication builds trust and sets the right expectation without overwhelming the customer with technical detail.