Typical steering faults: how to recognize and fix them

Steering is a critically important component of a car, the health of which determines not only driving comfort, but also safety on the road. Even minor deviations in the system's operation can lead to loss of control over the machine, especially at high speeds or in emergency situations. According to traffic police statistics, up to 15% of road accidents with severe consequences occur due to malfunctions of the steering mechanism or suspension.

In this article we will look at 10 most common steering problems, their characteristic features and diagnostic methods. You will learn how to distinguish wear on tie rod ends from problems with the rack, why the steering column knocks when turning, and when it is not the mechanism that is to blame, but hydraulic booster (power steering) or electric booster (EUR). We will pay special attention to symptoms that cannot be ignored - they may signal an impending breakdown that can block the steering wheel in motion.

The material will be useful for both novice drivers and experienced car owners. We will not go into complex technical details, but we will give clear recommendations, when you can get by with adjusting or replacing small parts, and when a complete diagnosis is required at a service station with disassembly of the steering mechanism.

1. Steering wheel play: norms and dangerous limits

Backlash is the free movement of the steering wheel, at which the wheels remain motionless. A small backlash (up to 10°) is considered normal and is provided by the design to compensate for impacts from road unevenness. However, if the free play exceeds 20–30 mm (or 10–15° for passenger cars), this is already critical fault signalrequiring immediate intervention.

The main reasons for increased play:

• 🔧 Wear of steering rod joints or tips (the most common cause, especially on cars over 5 years old).
• 🔄 Loose steering rack or column (check the bolts after a recent repair!).
• ⚙️ Wear of the gear pair in the steering rack (typical for cars with a mileage of over 150 thousand km).
• 🚗 Deformation of suspension elements after an accident or off-road driving.

How to check the play yourself? Start the engine, put the wheels straight and smoothly turn the steering wheel left and right, observing the moment when the wheels begin to react. If the free play exceeds 5–7 cm on the steering wheel rim - urgently for diagnostics! On some models (for example, Toyota Corolla or Hyundai Solaris) the permissible play is indicated in the service book - check it.

⚠️ Attention: Play of more than 25° (or 10 cm on the steering rim) makes the car uncontrollable in emergency situations. Operating such a car is prohibited by the traffic rules (clause 2.3.1 - “Driving is prohibited if the steering is faulty”).

2. Knock in the steering: where does it come from and how to localize it

Knocks when turning the steering wheel or on bumps are the second most common sign of a malfunction. The main difficulty is that any part can knock: from the rod ends to the support bearing. Let's look at typical "sound symptoms":

Character of the knock	Probable Cause	How to confirm
Sharp metallic knocking sound when turning in place	Worn tie rod joints or ends	Pump the rod with your hand - the play will be noticeable
Clunking noise when driving over uneven surfaces	Support bearing or shock absorber strut	The knocking sounds in the steering wheel and body at the same time
Clicking noise when turning the steering wheel all the way	Problems with the CV joint or steering column universal joint	Clicks are synchronous with the rotation angle
Clunking noise when driving in a straight line	Worn rack or bushings	The knocking becomes louder at speeds of 40–60 km/h

For accurate diagnosis, use the "triangulation" method:

1. Have a helper move the steering wheel left and right while you listen for a knocking sound from underneath the car.
2. Try to determine where the sound is coming from: from the front (rods, rack), from the side (tips) or from the interior (column).
3. Check whether the knocking noise depends on the speed or angle of rotation.

For example, if a knock is heard only when turning left and disappears in a straight line, most likely the culprit left rod end or rack bushing from this side. And if it knocks when driving over speed bumps, check support bearings or shock absorbers.

3. Stiff steering: when the power steering is not to blame

“The steering wheel seems to get stuck” is a typical complaint from owners of cars with hydraulic or electric power steering. However, the causes of tight rotation are not always related to the amplifier. Let's consider all the options:

• 🔴 Problems with power steering/EUR:
  • Low fluid level in the power steering reservoir (check on a cold engine!).
  • Worn power steering pump (characteristic whine when turning).
  • Malfunction of the EUR electronics (the icon lights up on the instrument panel EPS).
• 🔧 Mechanical faults:
  • Steering rack jamming due to corrosion or dirt (often after driving through puddles).
  • Deformation of the steering column shaft (after an accident).
  • Worn wheel bearings (stiff rotation only at low speeds).
• ⚙️ Other reasons:
  • Incorrect tire pressure (especially if it turns hard to one side).
  • Brake calipers are jammed (check that the discs are heated after the ride).

How can you tell the difference between an amplifier problem and a mechanical problem? Turn off the engine and try to turn the steering wheel. If it rotates easily, the power steering/EUR is to blame. If it’s tight even with the car turned off, the problem is in the mechanics (rack, column, rods).

On vehicles with electric booster (for example, Kia Rio or Renault Duster) Stiff rotation may be caused by a malfunction in the control unit. Try resetting the errors by disconnecting the battery for 10 minutes. If it doesn’t help, diagnostics with a scanner is required.

What to do if the steering wheel is stuck while driving?

If the steering suddenly locks while driving:

1. Don't panic and slowly reduce your speed using the brakes.

2. Try turning the steering wheel sharply left and right - sometimes this helps to “knock down” the wedge.

3. If the blockage is complete, turn on the emergency lights and carefully pull over to the side of the road.

4. Do not turn off the engine under any circumstances - this will turn off the amplifier (on a car with power steering/EUR).

5. Call a tow truck - further movement is dangerous!

4. Steering wheel vibration: when it’s not wheel balancing

Steering wheel vibration is a multifaceted symptom that drivers often attribute to wheel imbalance. However, the reasons may be much more serious:

Vibration at speed 80–120 km/h:

• 🌀 Wheel imbalance (the most harmless reason).
• 🔄 Deformation of the steering rack or propeller shaft.
• 🚗 Wear of CV joints (vibration increases during acceleration).

Vibration when braking:

• 🔴 Deformed brake discs.
• 🛑 Wear of wheel bearings (vibration sends into the steering wheel and body).

Vibration at low speeds (20–40 km/h):

• ⚙️ Play in steering rods or tips.
• 🔧 Loosening the steering rack.

How to diagnose? If the vibration disappears when the engine brakes (in neutral), there is a problem in the transmission or wheels. If it remains, the steering or suspension is to blame. On car with EUR (for example, Volkswagen Polo) vibration may appear due to a malfunction of the amplifier electric motor - check the errors with a scanner.

Check wheel balancing|Inspect brake discs for runout|Twist tie rods for play|Test drive with power off (at low speeds)|Check steering rack mounting-->

5. Power steering fluid leak: how to find and fix

Fluid in the power steering system (ATF or special PSF) must circulate in a closed loop. If the level drops and reddish spots appear under the car, this is a sign of a leak. Main "weak points":

• 🔴 Power steering reservoir: Cracks or loose lid (liquid squeezes out when heated).
• 🔄 High/low pressure hoses: They rub against the body or burst from old age.
• 🛢️ Power steering pump: Wear of the oil seal or bearing (characteristic howling + puddle under the pump).
• ⚙️ Steering rack: Leaking through the seals (liquid flows down the rod boots).

How to find a leak? Start the engine, turn the steering wheel all the way several times (to increase the pressure in the system) and inspect all components with a flashlight. Please note:

• Wet spots on the steering rod boots.
• Leaks on the rack or pump housing.
• Puddles under the car after parking (the color of the liquid is red, yellow or green).

Temporary solution: add fluid to the level MAX and monitor its consumption. If the leak is severe (more than 100 ml per week), it is dangerous to operate the car - the pump or rack may jam. On some models (for example, Ford Focus II) rack leakage is a “disease” that requires replacement of the seals or the entire rack assembly.

⚠️ Attention: If power steering fluid gets on the alternator belt, it may slip or break. When replacing hoses or racks, always check the condition of the belt!

6. Uneven force on the steering wheel: “pulls” to the side

If the car pulls to the left or right when driving in a straight line, and you have to “catch” the steering wheel, the reasons may be both in the steering and in other systems:

Steering problems:

• 🔧 Different lengths of tie rods (after unqualified repairs).
• ⚙️ Rack wear on one side.
• 🛑 Steering column jamming (rare, but dangerous!).

Other reasons:

• 🚗 Different tire pressures (check with a pressure gauge!).
• 🌀 Wheel alignment violation (after falling into a hole).
• 🔴 Brake caliper jamming (check disc heating).

How to diagnose? On a flat road, accelerate to 60 km/h, release the steering wheel and watch the trajectory. If the car is driven away one way when braking — the caliper is at fault. If on acceleration — check the camber or suspension. If withdrawal occurs constantly, even at low speeds - inspect the steering rods and rack.

By car from EUR (for example, Skoda Octavia A7) Uneven force may be caused by a malfunction in the control unit. Try calibrating the amplifier through the diagnostic menu (on some models this is done through Settings → Steering → Calibration).

7. Extraneous sounds from the hydraulic booster: howling, creaking, gurgling

Sounds from the power steering system are a sure sign of a malfunction. Let's decipher the "audio symptoms":

• 🔊 Loud whine when turning: Wear of the power steering pump (especially when cold). On cars older than 10 years (for example, VAZ 2110) this is the problem.
• 💦 Gurgling or "squelching": Air entering the system due to low fluid level or suction through hoses.
• 🔄 Creak when turning all the way: Worn steering rack or column shaft bushings.
• 🚗 Clicks when returning the steering wheel: Malfunction of the check valve in the power steering pump.

How to fix it?

1. Check the fluid level in the power steering reservoir (should be between MIN and MAX).
2. Inspect the hoses for cracks and leaks.
3. If the howling does not go away, replace the power steering fluid (it loses its properties after 60–80 thousand km).
4. If creaking or clicking remains, diagnose the pump and rack.

By car from EUR Unusual sounds (such as crackling or buzzing) may indicate wear on the drive gear or a faulty motor. In this case, only diagnostics with a scanner will help (for example, Launch X431 or Autel).

8. Electric power steering (EPS): specific faults

Electric power steering (EPS) are gradually replacing hydraulic systems, but have their own “diseases”. Typical problems:

• 🔋 The steering wheel has become heavier: Failure of the electric motor or control unit. The icon lights up on the dashboard EPS or Check the steering.
• 🔄 Steering wheel jerks when turning: Worn drive gear or torque sensor.
• 🚗 Spontaneous steering: Failure in the control unit (requires flashing).
• 💻 Error "Amplifier fault": Problems with wiring or sensors (for example, speed sensor).

Diagnostics of the EUR is more difficult than the power steering, as it requires a scanner. However, you can do some checks yourself:

• Check the EUR fuse (usually 50–80A, location is indicated in the manual).
• Inspect the connectors on the control unit (cars often oxidize after 5 years of operation).
• Carry out a test: with the car turned off, turn the steering wheel - if it rotates easily, but after starting the engine it becomes stiff, the electric motor is to blame.

On some models (for example, Chevrolet Cruze or Opel Astra J) The EUR can turn off when the voltage in the on-board network is low. Check the battery charge and generator!

FAQ: Frequently asked questions about steering problems

Is it possible to drive with 15° steering play?

No, it's dangerous. According to GOST R 51709-2001, the maximum permissible play for passenger cars is 10° (or 25 mm on the handlebar rim). Backlash of 15° is already considered critical and can lead to loss of control at speed. The operation of such a car is prohibited by traffic regulations (a fine of 500 rubles under Article 12.5 of the Administrative Code).

Why does the steering wheel vibrate only at speeds of 100–120 km/h?

At such speeds it appears more often wheel imbalance or deformation of brake discs. Less commonly, wear of CV joints or the steering column driveshaft. To accurately determine the cause, balance the wheels and check the runout of the discs. If the vibration remains, diagnose the suspension and steering.

How much does it cost to repair a steering rack?

The cost depends on the type of repair and car model:

• Replacing anthers and seals: 3–8 thousand rubles. (without spare parts).
• Rack repair (replacement of bushings, gear pair): 10–25 thousand rubles.
• Replacing the rack assembly: 20–60 thousand rubles. (depending on the brand).

On foreign cars (Toyota, Honda) slats are often restored, on budget cars (Lada, Renault) it’s cheaper to install a new one.

Can I adjust the steering rack myself?

On some cars (for example, VAZ 2108–2115) the steering rack has adjusting screw, which allows you to remove the backlash. However:

• Adjustment requires experience - if over-tightened, the rack will “stick”.
• On most foreign cars there are racks unregulated (replacement of parts required).
• After adjustment, be sure to check the free play of the steering wheel!

If you don’t have the skills, it’s better to go to a service station.

What to do if you hear a grinding noise when turning the steering wheel?

Grinding usually indicates critical wear one of the details:

• Worn out tie rod ends (grinding noise when turning in place).
• Destroyed steering column shaft bearing (a grinding sound comes from the steering wheel).
• Sand or dirt getting into steering rack (after off-road driving).

You cannot operate a car with this symptom! Contact a service station immediately - the part may jam at any moment.