* Steering column lock: This is the most common cause. The mechanism that locks the steering wheel when the car is turned off might be malfunctioning. This can be due to wear and tear, a broken component within the lock, or a problem with the ignition switch itself. Sometimes, gently jiggling the steering wheel while turning the key can help dislodge it. However, if it's consistently locking up, it needs professional attention.
* Low power steering fluid: If your power steering fluid is low, it can make steering difficult and in extreme cases, it could feel like the steering wheel is locking up. Check your power steering fluid level and top it off if needed. Low fluid could indicate a leak, which needs to be addressed.
* Power steering pump failure: A failing power steering pump will make steering very difficult and could manifest as a locking steering wheel. You might hear unusual noises from the pump as well.
* Binding in the steering system: There could be a mechanical issue somewhere in the steering system, such as a problem with the steering linkage, tie rods, or other components. This would require a thorough inspection by a mechanic.
* Faulty ignition switch: Problems with the ignition switch can sometimes affect the steering column lock.
* Faulty steering wheel sensor: Some cars have steering wheel position sensors that are crucial for various electronic systems. A malfunction in this sensor could affect the steering or cause the steering wheel to feel stiff.
What to do:
1. Safety First: Don't force the steering wheel. This could damage components.
2. Check Power Steering Fluid: Inspect and top off the power steering fluid if low.
3. Try Jiggling the Wheel: Gently jiggle the steering wheel while turning the key to the on position. This sometimes works for temporary relief if the steering column lock is the problem.
4. Professional Mechanic: If the problem persists, take your Saturn to a qualified mechanic for diagnosis and repair. They have the tools and expertise to pinpoint the exact cause and fix it safely. Ignoring this could lead to more serious problems and potential safety hazards.
It's crucial to get this issue resolved promptly as driving with a steering wheel that locks up is dangerous.