what causes my Genesis G70 to shake when I brake at high speeds?

Genesis G70 IG (2017-2023)

Error Codes

2-4 hours

Time

medium

Difficulty

high

Severity

3 min read

526 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 issues in Genesis G70. Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Brakes

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Always disconnect the battery before working on brake systems to prevent accidental activation.
•Allow the brake components to cool before touching them to avoid burns.

Symptoms

•Steering wheel shakes when braking
•Vibration felt through the brake pedal
•Uneven brake pad wear
•Pulsating sensation in the brake system
•Increased stopping distance

Diagnostic Steps

1
Inspect brake components visually for any signs of wear or damage.
2
Check for warped brake rotors using a dial indicator or by measuring rotor thickness.
3
Examine brake pads for uneven wear or contamination.
4
Inspect suspension components (control arms, tie rods) for play or damage.
5
Test tire balance and alignment to rule out wheel-related issues.
6
Scan for any diagnostic trouble codes related to the braking system.

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

•Lug wrench
•Dial indicator
•Torque wrench
•Socket set
•Brake cleaner
•Jack and jack stands

Parts Required

•Brake rotors (if warped)
•Brake pads (if worn)

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Diagnostic Steps

1
Inspect brake components visually for any signs of wear or damage.
2
Check for warped brake rotors using a dial indicator or by measuring rotor thickness.
3
Examine brake pads for uneven wear or contamination.
4
Inspect suspension components (control arms, tie rods) for play or damage.
5
Test tire balance and alignment to rule out wheel-related issues.
6
Scan for any diagnostic trouble codes related to the braking system.

Solution

1. Preparation

Gather tools and parts needed for the repair.
Ensure the vehicle is on a flat surface and secure it with wheel chocks.
Raise the vehicle and support it with jack stands.

2. Remove Wheel

Use a lug wrench to loosen and remove the wheel lug nuts.
Remove the wheel to access the brake components.

3. Inspect and Replace Brake Rotors

Inspection: Use a dial indicator to measure rotor runout.
- If the rotor exceeds the manufacturer's specifications, it must be replaced.
Replacement:
1. Remove the caliper by unscrewing the caliper bolts.
2. Carefully slide the caliper off the rotor and suspend it without straining the brake line.
3. Remove the rotor by unscrewing any retaining screws and sliding it off the hub.
4. Install the new rotor, ensuring it is seated properly.
5. Reattach the caliper and torque the bolts to the manufacturer's specifications.

4. Inspect and Replace Brake Pads

Inspection: Check the brake pads for uneven wear.
Replacement:
1. Remove the caliper bracket bolts and the bracket itself.
2. Slide out the old pads and insert new brake pads, ensuring proper orientation.
3. Reattach the caliper bracket and torque to specifications.

5. Reassemble and Test

Reinstall the wheel and hand-tighten the lug nuts.
Lower the vehicle and torque the lug nuts to the manufacturer's specifications.
Perform a test drive to ensure the shaking during braking has been resolved.