The power steering warning light illuminates when the assistance system (hydraulic or electric) detects a fault. The most common symptom is a steering wheel that becomes stiff, especially at low speeds or during maneuvers.
What Does the Power Steering Warning Light Mean?
Depending on the vehicle, power steering can be:
- Hydraulic (pump + steering fluid)
- Electric (electric motor + sensors)
When the light comes on, assistance may be reduced or disabled.
Is It Dangerous to Drive?
The vehicle generally remains drivable, but:
- The steering wheel may become very stiff
- Maneuvering becomes difficult
- City driving can be risky
It’s advisable to limit trips and diagnose the issue quickly.
Most Common Causes
1. Weak Battery or Failing Alternator
In electric power steering, low voltage can cut off assistance.
2. Faulty Fuse or Relay
A power interruption is enough to disable the system.
3. Steering Angle Sensor
A miscalibrated sensor can trigger the warning light.
4. Pump Issue (Hydraulic Steering)
If the pump fails or the fluid level is low, assistance disappears.
What to Do Immediately?
- Check if other warning lights are on (battery, ABS, ESP)
- Test the battery voltage if possible
- For hydraulic steering: check the fluid level
Repair Costs
| Cause | Estimated Cost |
|---|---|
| Battery / Alternator | $80 to $800 |
| Fuse / Relay | $20 to $150 |
| Steering Angle Sensor | $200 to $500 |
| Power Steering Pump | $400 to $1,200 |
Key Takeaway
A power steering warning light indicates reduced or lost assistance. The vehicle remains drivable, but the steering wheel can become very stiff. Quick diagnosis can prevent a complete failure.
