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

559 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 when working on electrical components.
•Allow the vehicle to cool down before working on the braking system.

Symptoms

•Shaking or vibration felt through the steering wheel or brake pedal when braking
•Noise such as grinding or squeaking during braking
•Uneven brake pad wear
•Pulsation in the brake pedal
•Increased stopping distance

Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear by removing the wheel and measuring rotor thickness.
2
Check brake pads for excessive wear or damage and ensure they are properly seated in the caliper.
3
Examine brake calipers for proper operation; ensure they are not sticking or seizing.
4
Inspect the suspension components, including control arms and tie rods, for wear or damage that may contribute to vibrations.
5
Check wheel balance and alignment to rule out issues unrelated 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

•Jack and jack stands
•Lug wrench
•Torque wrench
•Caliper tool
•Brake rotor measuring tool
•Safety glasses
•Gloves

Parts Required

•Brake rotors (if warped or below minimum thickness)
•Brake pads (if worn)

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Diagnostic Steps

1
Inspect brake rotors for warping or uneven wear by removing the wheel and measuring rotor thickness.
2
Check brake pads for excessive wear or damage and ensure they are properly seated in the caliper.
3
Examine brake calipers for proper operation; ensure they are not sticking or seizing.
4
Inspect the suspension components, including control arms and tie rods, for wear or damage that may contribute to vibrations.
5
Check wheel balance and alignment to rule out issues unrelated to the braking system.

Solution

1. Preparation

Tools Required: Jack and jack stands, lug wrench, torque wrench, caliper tool, brake rotor measuring tool, safety glasses, gloves.
Safely lift the vehicle using a jack and secure it with jack stands.

2. Remove Wheels

Loosen the lug nuts slightly before lifting the vehicle.
Remove the lug nuts completely and take off the wheels to access the braking components.

3. Inspect and Replace Brake Rotors

Sub-steps:
- Measure the thickness of the rotors using a rotor measuring tool. If they are below the minimum thickness or warped, replace them.
- Remove the caliper bolts using the appropriate socket, then hang the caliper using a bungee cord to avoid stress on the brake line.
- Remove the rotor; if it is stuck, gently tap it with a rubber mallet.
- Install the new rotor, ensuring it is seated properly.
- Reinstall the caliper and torque the caliper bolts to the manufacturer’s specifications.

4. Inspect and Replace Brake Pads

Sub-steps:
- Check the brake pads for wear; if they are worn below the minimum thickness, replace them.
- Remove the old pads from their bracket.
- Compress the caliper piston using a caliper tool to allow space for the new pads.
- Install the new pads, ensuring they are aligned correctly.
- Reinstall the caliper and torque the caliper bolts.

5. Reassemble and Test

Reinstall the wheels and hand-tighten the lug nuts.
Lower the vehicle and torque the lug nuts to the specified torque setting.
Test drive the vehicle to ensure the brake shake is resolved.