why does my Genesis G70 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

522 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 vibrations in Genesis G70 when braking at high speeds. 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 electrical systems.
•Allow the brake components to cool before handling after use.

Symptoms

•Vibration felt in the steering wheel while braking
•Shaking of the vehicle chassis during braking
•Uneven brake pad wear
•Pulsation in the brake pedal
•Increased stopping distance

Diagnostic Steps

1
Inspect brake rotor condition for warping or damage.
2
Check brake pad thickness and wear patterns.
3
Verify wheel lug nut torque to ensure proper seating.
4
Examine suspension components, including control arms and bushings.
5
Assess tire condition, including balance and alignment.
6
Scan for any error codes related to the ABS 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

•OBD-II scanner
•Socket set
•Jack
•Jack stands
•Brake cleaner
•Torque wrench

Parts Required

•New brake rotors
•New brake pads

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Diagnostic Steps

1
Inspect brake rotor condition for warping or damage.
2
Check brake pad thickness and wear patterns.
3
Verify wheel lug nut torque to ensure proper seating.
4
Examine suspension components, including control arms and bushings.
5
Assess tire condition, including balance and alignment.
6
Scan for any error codes related to the ABS system.

Solution

1. Preparation

Gather necessary tools and parts.
Park the vehicle on a level surface and engage the parking brake.
Disconnect the battery for safety.

2. Remove Wheel

Tools Required: Socket set, jack, jack stands
Loosen lug nuts slightly while the vehicle is on the ground.
Raise the vehicle using a jack and secure on jack stands.
Fully remove lug nuts and take off the wheel.

3. Inspect and Replace Brake Rotors

Check the rotor for warping using a dial indicator or by visual inspection.
If warped, proceed to remove the caliper and rotor:
1. Remove caliper mounting bolts.
2. Carefully lift the caliper off the rotor and support it using a bungee cord.
3. Remove the rotor from the hub.
Install new rotors:
1. Clean the hub surface and new rotor with brake cleaner.
2. Place the new rotor onto the hub.
3. Reinstall the caliper over the rotor and tighten the caliper bolts to manufacturer specifications.

4. Replace Brake Pads

Check the brake pads for wear; replace if necessary:
1. Remove the caliper bracket if needed.
2. Slide out the old brake pads and replace with new ones.
3. Ensure proper alignment and secure the caliper bracket.

5. Reinstall Wheel

Place the wheel back onto the hub.
Hand-tighten the lug nuts before lowering the vehicle.
Lower the vehicle and torque the lug nuts to the manufacturer’s specifications.

6. Test Drive

Reconnect the battery.
Conduct a test drive to ensure that the vibrations have been resolved.