Is it safe to drive with the EPS light on?
Not always safe to continue driving. The EPS light signals a fault in the electric power steering system; your steering may still work, but assist can be reduced or lost, making steering heavier, especially at low speeds. If you can safely pull over, do so and arrange diagnosis as soon as possible.
Electric power steering (EPS) uses an electric motor and sensors to assist steering. When the warning appears, it means the system has detected an issue that could affect how well the steering responds. The cause can range from a weak battery to sensor or wiring faults, and proper diagnosis is essential because loss of steering assist can increase crash risk in certain conditions.
Understanding EPS and the warning
EPS stands for Electronic Power Steering. It uses a small electric motor mounted on the steering rack or column to provide assist. The warning light can come on for many reasons, from low voltage to hardware failure. Knowing why helps you decide how to drive and when to seek service.
What can trigger the EPS warning
Common causes include:
- Low battery voltage or failing 12V battery, which can destabilize the EPS controller
- Faulty steering angle sensor or torque sensor
- Malfunctioning EPS motor or wiring harness
- Corroded or loose electrical connections
- Faulty EPS control module or software issue
- Interactions with ABS/traction control systems and other chassis electronics
Because the EPS system relies on electrical power and sensors, many faults can trigger the light. If the light is on, you should treat it as a potential safety issue and avoid aggressive driving.
Is it safe to drive with the EPS light on?
The light does not guarantee you must stop driving, but it indicates a fault that could affect steering assist. In many vehicles you can still steer, but the effort may increase, especially at low speeds or during parking. In some cases, steering assist can be reduced substantially or fail completely, making driving hazardous in certain situations. Therefore, plan to drive only to a safe location or the nearest service center, avoiding highway speeds if possible and taking extra caution in turns and parking.
Immediate steps if the EPS light comes on
Before traveling further, perform these steps to minimize risk and gather diagnostic data.
- Find a safe place to stop away from traffic.
- Check the 12V battery and charging system voltage (aim for 12.6–14.4 volts when running).
- Restart the engine and check if the light clears; if it doesn't, do not continue driving aggressively.
- Look for other warning lights (ABS, check engine, stability control) that might indicate a broader fault.
- Use an OBD-II scanner to read any stored codes related to EPS if you have access; otherwise seek professional diagnosis.
- Schedule service with a qualified technician or your dealership; EPS faults often require a software update, sensor replacement, or motor repair.
If the steering feels heavy, has reduced assist, or the light stays on after restart, it's not safe to drive long distances. Use roadside assistance if possible.
What to expect at the service center
Technicians will typically diagnose via vehicle-specific scan tools to read EPS fault codes, inspect battery health, wiring harness, connectors, and sensors, and test the EPS motor and control module. Repairs may include replacing faulty sensors, the EPS motor, updating software, or repairing wiring. The exact cost and time depend on the fault and vehicle model.
Maintaining EPS health
To reduce the risk of EPS faults:
- Keep the vehicle’s 12V battery and alternator in good condition; battery voltage should be stable and within spec.
- Avoid disconnecting the battery while the system is powered; if necessary, follow proper procedures.
- Address warning lights promptly instead of driving until the fault worsens.
- Get regular electrical system checks during service intervals.
Regular maintenance helps ensure EPS reliability and reduces the likelihood of warning lights.
Summary
The EPS warning indicates a fault in the electric power steering system. It can allow steering with reduced or no assist, but continuing to drive without diagnosing the issue can be risky, particularly in tight turns or at low speeds. If the light appears, pull over safely, verify basic conditions (like battery health), and seek professional diagnosis as soon as possible. Do not rely on a vehicle with a known EPS fault for long drives until it is repaired.
