Is your car shaking and the traction control light on? This can be scary and confusing for drivers. The most common cause is a faulty wheel speed sensor, which can cost $143-$172 to replace plus labor.
The traction control system helps keep your car stable on slippery roads. When it’s not working right, you may feel shaking and see the warning light. Other possible causes include bad tires, brake problems, or issues with the car’s computer.
If you notice these symptoms, it’s best to get your car checked by a mechanic soon. They can run tests to find the exact problem. Driving with faulty traction control can be dangerous, especially in bad weather.
Key Takeaways
- A faulty wheel speed sensor is often the cause of traction control lights and car shaking
- Other possible causes include tire, brake, or computer issues
- Professional diagnosis is recommended for safe and proper repairs
Understanding Traction Control Systems
Traction control systems help cars grip the road better and drive more safely. They work by monitoring wheel spin and adjusting power to keep tires from slipping.
Principles of Traction Control
Traction control aims to stop wheels from spinning too fast on slippery surfaces. It uses sensors to check if any wheels are rotating faster than they should be. When a wheel spins too fast, the system cuts engine power or applies the brakes to that wheel.
This helps the car keep moving forward smoothly instead of sliding. Traction control is most useful on wet, icy, or loose roads. It can also help when accelerating quickly on dry roads.
Many newer cars have more advanced traction control that works with other safety systems. These can help in turns or when going uphill.
Components and Functionality
The main parts of a traction control system are:
- Wheel speed sensors
- Hydraulic modulators
- Electronic control unit (ECU)
Wheel sensors track how fast each tire is turning. The ECU compares these speeds to spot any wheels spinning too fast. If it finds a problem, it tells the modulators what to do.
The modulators can reduce engine power or apply brakes to specific wheels. This happens very fast – many times per second. Drivers may feel a slight pulsing in the gas pedal or small changes in the engine sound.
Traction control lights on the dashboard show when the system is working. If this light stays on, it could mean there’s an issue with a sensor or other part.
Common Causes for Traction Control Light Illumination and Vehicle Shaking
When your car shakes and the traction control light comes on, it often points to issues with key sensors or the control module. These problems can affect your vehicle’s stability and performance on the road.
Wheel Speed Sensor Issues
Wheel speed sensors play a crucial role in the traction control system. They monitor the rotation speed of each wheel and send this data to the car’s computer.
If a sensor fails, it can cause:
- Incorrect speed readings
- False activation of the traction control system
- Shaking or vibrations in the car
Dirt, debris, or physical damage can lead to sensor malfunction. In some cases, the wiring connecting the sensor to the car’s computer may be faulty.
To fix this issue, a mechanic will need to:
- Check each wheel speed sensor
- Clean or replace faulty sensors
- Repair any damaged wiring
Traction Control Module Faults
The traction control module is the brain of the system. It processes data from various sensors and controls the car’s stability.
A faulty module can cause:
- Unexpected activation of the traction control system
- Car shaking or loss of power
- Continuous illumination of the traction control light
Software glitches or hardware failures within the module can lead to these problems. In some cases, a simple reset may solve the issue. Other times, the module may need replacement.
Diagnosing module faults often requires specialized equipment. It’s best to have a professional mechanic check the system if you suspect a module problem.
Steering Angle Sensor Calibration
The steering angle sensor measures the position and rate of turn of the steering wheel. This data helps the traction control system maintain vehicle stability during turns.
If this sensor is out of calibration, it can cause:
- Incorrect activation of the traction control system
- Car shaking, especially during turns
- Steering wheel vibrations
Calibration issues may arise after wheel alignments or steering system repairs. Some vehicles require a specific calibration procedure using diagnostic tools.
To fix this problem:
- Check the steering angle sensor readings
- Perform a calibration if needed
- Replace the sensor if it’s faulty
Regular maintenance and prompt attention to warning lights can help prevent these issues from worsening.
Symptoms and Diagnosis
When your traction control light comes on and your car starts shaking, it’s important to know what to look for. These signs can point to issues with your vehicle’s stability systems.
Visual Inspection and Trouble Codes
Start by checking your dashboard. A lit traction control warning light is a clear sign of a problem. This light may stay on all the time or flash while driving.
Next, use an OBD-II scanner to read any trouble codes. These codes can give clues about what’s wrong. Common codes might relate to wheel speed sensors or the ABS system.
Look under the hood for loose wires or damaged parts. Check the wheel wells for signs of dirt or damage to sensors. Inspect your tires for uneven wear, which could cause shaking.
Road Testing and Observations
Take your car for a short drive to feel how it behaves. Notice if the shaking gets worse at certain speeds. Pay attention to when the traction control light comes on.
Test your brakes gently. If the ABS kicks in too easily, it might be linked to the traction control issue. Listen for unusual noises when turning or braking.
Try accelerating on a straight, empty road. If the car hesitates or shakes more, the traction control might be engaging when it shouldn’t. This could point to a faulty sensor or module.
Note any steering problems. If the wheel feels stiff or pulls to one side, it might be related to the traction control issue.
Repair and Maintenance
Fixing traction control issues often involves replacing parts, resetting systems, and regular upkeep. These steps can help resolve problems and prevent future issues.
Replacing Faulty Sensors
Wheel speed sensors are common culprits in traction control problems. When these fail, they can cause the system to malfunction and the car to shake.
To replace a faulty sensor:
- Locate the sensor near the wheel hub
- Disconnect the old sensor
- Clean the mounting area
- Install the new sensor
- Test the system
The cost for a new wheel speed sensor typically ranges from $143 to $172, with labor costs between $62 and $78.
System Reset and Calibration
After replacing parts, the traction control system may need a reset or recalibration. This process can often resolve lingering issues.
Steps to reset the system:
- Turn off the engine
- Disconnect the car battery for 15 minutes
- Reconnect the battery
- Start the engine
- Test drive the vehicle
Some vehicles may require a professional diagnostic tool for a full system reset. This ensures all components are properly calibrated and working together.
Preventative Maintenance Strategies
Regular maintenance can help prevent traction control problems. Key strategies include:
- Rotating tires regularly to ensure even wear
- Checking tire pressure monthly
- Inspecting brake pads and rotors for wear
- Keeping wheels aligned properly
It’s also important to pay attention to warning lights. If the traction control light comes on, address it promptly to prevent more serious issues.
Regular professional inspections can catch problems early. This can save money on repairs and keep the vehicle running smoothly.
Driving Safety Tips
When facing traction control issues and car shaking, it’s crucial to take extra precautions on the road. Proper vehicle maintenance can help prevent these problems from occurring in the first place.
Navigating with Malfunctioning Traction Control
If your traction control light is on and your car is shaking, drive with caution. Reduce your speed, especially in wet or slippery conditions. Avoid sudden acceleration or braking.
Keep a safe distance from other vehicles. This gives you more time to react if your car behaves unexpectedly.
If possible, pull over to a safe spot and restart your car. Sometimes this can reset the traction control system.
Be extra careful when turning corners or changing lanes. The lack of traction control may cause your car to slip more easily.
Consider calling for roadside assistance if the shaking is severe. It’s better to be safe than risk an accident.
Long-Term Vehicle Care
Regular maintenance is key to preventing traction control issues. Have your car inspected by a professional mechanic at least once a year.
Check and replace wheel speed sensors if needed. Faulty sensors are a common cause of traction control problems.
Keep your tires properly inflated and rotated. Uneven tire wear can trigger traction control warnings.
Pay attention to unusual noises or vibrations while driving. Address these issues promptly to prevent them from worsening.
Consider upgrading to high-quality tires with better traction. This can improve your car’s stability and reduce the likelihood of traction control problems.
Frequently Asked Questions
Traction control light issues combined with car shaking often point to problems with sensors, engine misfires, or wheel speed inconsistencies. These symptoms can occur in different driving conditions and require proper diagnosis for safe vehicle operation.
Why does my car shake and the traction control light come on while idling?
When a car shakes at idle with the traction control light on, it may indicate an engine misfire. This can trigger both the check engine and traction control lights. A faulty spark plug or fuel injector could be the cause.
What could cause both the check engine and traction control lights to be on while the car is shaking?
Both lights can illuminate due to a malfunctioning wheel speed sensor. This sensor provides crucial data to the traction control system and engine management. When it fails, it can cause shaking and trigger multiple warning lights.
Is it safe to continue driving when my car shakes and the traction control light stays on?
It’s not safe to drive for extended periods with these symptoms. The shaking could worsen and lead to loss of vehicle control. It’s best to have the car inspected by a mechanic as soon as possible to prevent further damage.
Why is my vehicle shaking and the traction control light comes on during acceleration?
During acceleration, these symptoms often indicate a problem with the traction control system. The system may be limiting power to the wheels due to a perceived loss of traction, causing the car to shake and the warning light to activate.
What should I do if my car starts shaking at low speeds and the traction control light activates?
If shaking occurs at low speeds with the traction control light on, safely pull over and turn off the engine. Restart the car to see if the issue persists. If it does, contact a mechanic for assistance.
How can I diagnose my car when the traction control light is on and it’s jerking or shaking?
To diagnose the issue, check for any visible damage to wheels or tires. Use an OBD-II scanner to read error codes. This can help identify specific problems with sensors or the traction control system. Professional diagnosis may be necessary for accurate results.