why does my Genesis G70 shake when I brake

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

515 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix brake shaking in Genesis G70. Step-by-step guide with symptoms, diagnostic steps, tools, and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always ensure the vehicle is securely supported before working underneath.
•Allow the brakes to cool before handling components to avoid burns.

Symptoms

•Steering wheel shakes or vibrates when braking
•Vibrations felt in the brake pedal
•Uneven brake wear
•Pulsating sensation during braking
•Possible increase in stopping distance

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for uneven wear or contamination.
3
Examine wheel lug nut torque to ensure they are properly tightened.
4
Inspect suspension components (e.g., control arms, bushings) for wear or damage.
5
Verify wheel alignment and balance to rule out related issues.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Jack and jack stands
•Socket set
•Torque wrench
•Micrometer
•Brake cleaner

Parts Required

•Brake rotors
•Brake pads

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear using a dial indicator.
2
Check brake pads for uneven wear or contamination.
3
Examine wheel lug nut torque to ensure they are properly tightened.
4
Inspect suspension components (e.g., control arms, bushings) for wear or damage.
5
Verify wheel alignment and balance to rule out related issues.

Solution

1. Preparation

Gather the necessary tools and parts.
Ensure the vehicle is on a level surface and the parking brake is engaged.
Disconnect the battery if working on electronic components.

2. Remove Wheel

Loosen the lug nuts slightly while the wheel is still on the ground.
Lift the vehicle using a jack and secure it with jack stands.
Remove the lug nuts completely and take off the wheel.

3. Inspect and Replace Brake Rotors

Check rotor thickness with a micrometer; replace if below minimum specification.
If warped, remove the caliper bracket using a socket set and hang it securely to avoid damage to the brake line.
Remove the rotor by unscrewing any retaining screws and sliding it off the hub.
Install new rotors, ensuring they are clean and free from oil or debris.

4. Inspect and Replace Brake Pads

Remove old brake pads from the caliper bracket by sliding them out.
Inspect the caliper for proper operation; clean or replace if necessary.
Install new brake pads, ensuring they are properly aligned and seated in the caliper bracket.

5. Reassemble Components

Reattach the caliper bracket and torque the bolts to the manufacturer’s specifications (typically around 80-100 ft-lbs).
Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and then torque the lug nuts to the recommended specification (usually 100-120 ft-lbs).

6. Final Checks

Reconnect the battery (if disconnected).
Pump the brake pedal to ensure proper engagement.
Test drive the vehicle to confirm the issue has been resolved.